diff --git a/baystation12.dme b/baystation12.dme
index 5c6fe3730de..10e4561af41 100644
--- a/baystation12.dme
+++ b/baystation12.dme
@@ -1132,10 +1132,19 @@
 #include "code\modules\scripting\Scanner\Tokens.dm"
 #include "code\modules\security levels\keycard authentication.dm"
 #include "code\modules\security levels\security levels.dm"
+#include "code\modules\surgery\appendix.dm"
+#include "code\modules\surgery\bones.dm"
+#include "code\modules\surgery\braincore.dm"
+#include "code\modules\surgery\eye.dm"
+#include "code\modules\surgery\face.dm"
+#include "code\modules\surgery\generic.dm"
+#include "code\modules\surgery\other.dm"
+#include "code\modules\surgery\ribcage.dm"
+#include "code\modules\surgery\robolimbs.dm"
+#include "code\modules\surgery\surgery.dm"
 #include "code\WorkInProgress\autopsy.dm"
 #include "code\WorkInProgress\buildmode.dm"
 #include "code\WorkInProgress\explosion_particles.dm"
-#include "code\WorkInProgress\surgery.dm"
 #include "code\WorkInProgress\Cael_Aislinn\energy_field.dm"
 #include "code\WorkInProgress\Cael_Aislinn\external_shield_gen.dm"
 #include "code\WorkInProgress\Cael_Aislinn\meteor_battery.dm"
diff --git a/code/WorkInProgress/surgery.dm b/code/WorkInProgress/surgery.dm
deleted file mode 100644
index c262be46f15..00000000000
--- a/code/WorkInProgress/surgery.dm
+++ /dev/null
@@ -1,1303 +0,0 @@
-/datum/surgery_status/
-	var/eyes	=	0
-	var/face	=	0
-	var/appendix =	0
-
-/mob/living/carbon/var/datum/surgery_status/op_stage = new/datum/surgery_status
-
-/* SURGERY STEPS */
-
-/datum/surgery_step
-	// type path referencing the required tool for this step
-	var/required_tool = null
-
-	// type path referencing tools that can be used as substitude for this step
-	var/list/allowed_tools = null
-
-	// When multiple steps can be applied with the current tool etc., choose the one with higher priority
-
-	// checks whether this step can be applied with the given user and target
-	proc/can_use(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
-		return 0
-
-	// does stuff to begin the step, usually just printing messages
-	proc/begin_step(user, mob/living/carbon/human/target, target_zone, obj/item/tool)
-		return
-
-	// does stuff to end the step, which is normally print a message + do whatever this step changes
-	proc/end_step(user, mob/living/carbon/human/target, target_zone, obj/item/tool)
-		return
-
-	// stuff that happens when the step fails
-	proc/fail_step(user, mob/living/carbon/human/target, target_zone, obj/item/tool)
-		return null
-
-	// duration of the step
-	var/min_duration = 0
-	var/max_duration = 0
-
-	// evil infection stuff that will make everyone hate me
-	var/can_infect = 0
-
-	proc/isright(obj/item/tool)			//is it is a required surgical tool for this step
-		return (istype(tool,required_tool))
-
-	proc/isacceptable(obj/item/tool)	//is it is an accepted replacement tool for this step
-		if (allowed_tools)
-			for (var/T in allowed_tools)
-				if (istype(tool,T))
-					return 1
-		return 0
-
-// Build this list by iterating over all typesof(/datum/surgery_step) and sorting the results by priority
-
-
-proc/build_surgery_steps_list()
-	surgery_steps = list()
-	for(var/T in typesof(/datum/surgery_step)-/datum/surgery_step)
-		var/datum/surgery_step/S = new T
-		surgery_steps += S
-
-proc/spread_germs_to_organ(datum/organ/external/E, mob/living/carbon/human/user)
-	if(!istype(user) || !istype(E)) return
-
-	var/germ_level = user.germ_level
-	if(user.gloves)
-		germ_level = user.gloves.germ_level
-
-	E.germ_level = germ_level
-
-
-//////////////////////////////////////////////////////////////////
-//						COMMON STEPS							//
-//////////////////////////////////////////////////////////////////
-/datum/surgery_step/generic/
-	var/datum/organ/external/affected	//affected organ
-	can_use(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
-		if (target_zone == "eyes")	//there are specific steps for eye surgery
-			return 0
-		if (!hasorgans(target))
-			return 0
-		affected = target.get_organ(target_zone)
-		if (affected == null)
-			return 0
-		if (affected.status & ORGAN_DESTROYED)
-			return 0
-		if (affected.status & ORGAN_ROBOT)
-			return 0
-		return 1
-
-/datum/surgery_step/generic/cut_open
-	required_tool = /obj/item/weapon/scalpel
-	allowed_tools = list(/obj/item/weapon/shard, /obj/item/weapon/kitchenknife)
-
-	min_duration = 90
-	max_duration = 110
-
-	can_use(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
-		return ..() && affected.open == 0 && target_zone != "mouth"
-
-	begin_step(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
-		var/datum/organ/external/affected = target.get_organ(target_zone)
-		user.visible_message("[user] starts the incision on [target]'s [affected.display_name] with \the [tool].", \
-		"You start the incision on [target]'s [affected.display_name] with \the [tool].")
-		target.custom_pain("You feel a horrible pain as if from a sharp knife in your [affected.display_name]!",1)
-
-	end_step(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
-		var/datum/organ/external/affected = target.get_organ(target_zone)
-		user.visible_message("\blue [user] has made an incision on [target]'s [affected.display_name] with \the [tool].", \
-		"\blue You have made an incision on [target]'s [affected.display_name] with \the [tool].",)
-		affected.open = 1
-		affected.createwound(CUT, 1)
-		spread_germs_to_organ(affected, user)
-		if (target_zone == "head")
-			target.brain_op_stage = 1
-
-	fail_step(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
-		var/datum/organ/external/affected = target.get_organ(target_zone)
-		user.visible_message("\red [user]'s hand slips, slicing open [target]'s [affected.display_name] in a wrong spot with \the [tool]!", \
-		"\red Your hand slips, slicing open [target]'s [affected.display_name] in a wrong spot with \the [tool]!")
-		affected.createwound(CUT, 10)
-		if (ishuman(user))
-			user:bloody_hands(target, 0)
-
-/datum/surgery_step/generic/clamp_bleeders
-	required_tool = /obj/item/weapon/hemostat
-	allowed_tools = list(/obj/item/weapon/cable_coil, /obj/item/device/assembly/mousetrap)
-
-	min_duration = 40
-	max_duration = 60
-
-	can_use(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
-		return ..() && affected.open && (affected.status & ORGAN_BLEEDING)
-
-	begin_step(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
-		var/datum/organ/external/affected = target.get_organ(target_zone)
-		user.visible_message("[user] starts clamping bleeders in [target]'s [affected.display_name] with \the [tool].", \
-		"You start clamping bleeders in [target]'s [affected.display_name] with \the [tool].")
-		target.custom_pain("The pain in your [affected.display_name] is maddening!",1)
-
-	end_step(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
-		var/datum/organ/external/affected = target.get_organ(target_zone)
-		user.visible_message("\blue [user] clamps bleeders in [target]'s [affected.display_name] with \the [tool].",	\
-		"\blue You clamp bleeders in [target]'s [affected.display_name] with \the [tool].")
-		affected.clamp()
-		affected.status &= ~ORGAN_BLEEDING
-		spread_germs_to_organ(affected, user)
-
-	fail_step(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
-		var/datum/organ/external/affected = target.get_organ(target_zone)
-		user.visible_message("\red [user]'s hand slips, tearing blood vessals and causing massive bleeding in [target]'s [affected.display_name] with the \[tool]!",	\
-		"\red Your hand slips, tearing blood vessels and causing massive bleeding in [target]'s [affected.display_name] with \the [tool]!",)
-		affected.createwound(CUT, 10)
-		if (ishuman(user))
-			user:bloody_hands(target, 0)
-
-/datum/surgery_step/generic/retract_skin
-	required_tool = /obj/item/weapon/retractor
-	allowed_tools = list(/obj/item/weapon/kitchen/utensil/fork)
-
-	min_duration = 30
-	max_duration = 40
-
-	can_use(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
-		return ..() && affected.open < 2 && !(affected.status & ORGAN_BLEEDING)
-
-	begin_step(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
-		var/datum/organ/external/affected = target.get_organ(target_zone)
-		var/msg = "[user] starts to pry open the incision on [target]'s [affected.display_name] with \the [tool]."
-		var/self_msg = "You start to pry open the incision on [target]'s [affected.display_name] with \the [tool]."
-		if (target_zone == "chest")
-			msg = "[user] starts to separate the ribcage and rearrange the organs in [target]'s torso with \the [tool]."
-			self_msg = "You start to separate the ribcage and rearrange the organs in [target]'s torso with \the [tool]."
-		if (target_zone == "groin")
-			msg = "[user] starts to pry open the incision and rearrange the organs in [target]'s lower abdomen with \the [tool]."
-			self_msg = "You start to pry open the incision and rearrange the organs in [target]'s lower abdomen with \the [tool]."
-		user.visible_message(msg, self_msg)
-		target.custom_pain("It feels like the skin on your [affected.display_name] is on fire!",1)
-
-	end_step(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
-		var/datum/organ/external/affected = target.get_organ(target_zone)
-		var/msg = "\blue [user] keeps the incision open on [target]'s [affected.display_name] with \the [tool]."
-		var/self_msg = "\blue You keep the incision open on [target]'s [affected.display_name] with \the [tool]."
-		if (target_zone == "chest")
-			msg = "\blue [user] keeps the ribcage open on [target]'s torso with \the [tool]."
-			self_msg = "\blue You keep the ribcage open on [target]'s torso with \the [tool]."
-		if (target_zone == "groin")
-			msg = "\blue [user] keeps the incision open on [target]'s lower abdomen with \the [tool]."
-			self_msg = "\blue You keep the incision open on [target]'s lower abdomen with \the [tool]."
-		user.visible_message(msg, self_msg)
-		affected.open = 2
-		spread_germs_to_organ(affected, user)
-		if (prob(40)) user:bloody_hands(target, 0)
-
-	fail_step(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
-		var/datum/organ/external/affected = target.get_organ(target_zone)
-		var/msg = "\red [user]'s hand slips, tearing the edges of incision on [target]'s [affected.display_name] with \the [tool]!"
-		var/self_msg = "\red Your hand slips, tearing the edges of incision on [target]'s [affected.display_name] with \the [tool]!"
-		if (target_zone == "chest")
-			msg = "\red [user]'s hand slips, damaging several organs [target]'s torso with \the [tool]!"
-			self_msg = "\red Your hand slips, damaging several organs [target]'s torso with \the [tool]!"
-		if (target_zone == "groin")
-			msg = "\red [user]'s hand slips, damaging several organs [target]'s lower abdomen with \the [tool]"
-			self_msg = "\red Your hand slips, damaging several organs [target]'s lower abdomen with \the [tool]!"
-		user.visible_message(msg, self_msg)
-		target.apply_damage(12, BRUTE, affected)
-
-/datum/surgery_step/generic/cauterize
-	required_tool = /obj/item/weapon/cautery
-	allowed_tools = list(/obj/item/weapon/weldingtool, /obj/item/clothing/mask/cigarette, /obj/item/weapon/lighter)
-
-	min_duration = 70
-	max_duration = 100
-
-	can_use(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
-		return ..() && affected.open && target_zone != "mouth"
-
-	begin_step(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
-		var/datum/organ/external/affected = target.get_organ(target_zone)
-		user.visible_message("[user] is beginning to cauterize the incision on [target]'s [affected.display_name] with \the [tool]." , \
-		"You are beginning to cauterize the incision on [target]'s [affected.display_name] with \the [tool].")
-		target.custom_pain("Your [affected.display_name] is being burned!",1)
-
-	end_step(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
-		var/datum/organ/external/affected = target.get_organ(target_zone)
-		user.visible_message("\blue [user] cauterizes the incision on [target]'s [affected.display_name] with \the [tool].", \
-		"\blue You cauterize the incision on [target]'s [affected.display_name] with \the [tool].")
-		affected.open = 0
-		affected.germ_level = 0
-		affected.status &= ~ORGAN_BLEEDING
-
-	fail_step(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
-		var/datum/organ/external/affected = target.get_organ(target_zone)
-		user.visible_message("\red [user]'s hand slips, leaving a small burn on [target]'s [affected.display_name] with \the [tool]!", \
-		"\red Your hand slips, leaving a small burn on [target]'s [affected.display_name] with \the [tool]!")
-		target.apply_damage(3, BURN, affected)
-
-//////////////////////////////////////////////////////////////////
-//						APPENDECTOMY							//
-//////////////////////////////////////////////////////////////////
-
-/datum/surgery_step/appendectomy/
-	var/datum/organ/external/groin
-	can_use(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
-		if (target_zone != "groin")
-			return 0
-		groin = target.get_organ("groin")
-		if (!groin)
-			return 0
-		if (groin.open < 2)
-			return 0
-		return 1
-
-/datum/surgery_step/appendectomy/cut_appendix
-	required_tool = /obj/item/weapon/scalpel
-	allowed_tools = list(/obj/item/weapon/shard, /obj/item/weapon/kitchenknife)
-
-	min_duration = 70
-	max_duration = 90
-
-	can_use(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
-		return ..() && target.op_stage.appendix == 0
-
-	begin_step(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
-		user.visible_message("[user] starts to separating [target]'s appendix from the abdominal wall with \the [tool].", \
-		"You start to separating [target]'s appendix from the abdominal wall with \the [tool]." )
-		target.custom_pain("The pain in your abdomen is living hell!",1)
-
-	end_step(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
-		user.visible_message("\blue [user] has separated [target]'s appendix with \the [tool]." , \
-		"\blue You have separated [target]'s appendix with \the [tool].")
-		target.op_stage.appendix = 1
-		if (ishuman(user) && prob(40)) user:bloody_hands(target, 0)
-
-	fail_step(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
-		var/datum/organ/external/groin = target.get_organ("groin")
-		user.visible_message("\red [user]'s hand slips, slicing an artery inside [target]'s abdomen with \the [tool]!", \
-		"\red Your hand slips, slicing an artery inside [target]'s abdomen with \the [tool]!")
-		groin.createwound(CUT, 50, 1)
-		if (ishuman(user))
-			user:bloody_body(target)
-
-/datum/surgery_step/appendectomy/remove_appendix
-	required_tool = /obj/item/weapon/hemostat
-	allowed_tools = list(/obj/item/weapon/wirecutters)
-
-	min_duration = 60
-	max_duration = 80
-
-	can_use(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
-		return ..() && target.op_stage.appendix == 1
-
-	begin_step(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
-		user.visible_message("[user] starts removing [target]'s appendix with \the [tool].", \
-		"You start removing [target]'s appendix with \the [tool].")
-		target.custom_pain("Someone's ripping out your bowels!",1)
-
-	end_step(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
-		user.visible_message("\blue [user] has removed [target]'s appendix with \the [tool].", \
-		"\blue You have removed [target]'s appendix with \the [tool].")
-		var/app = 0
-		for(var/datum/disease/appendicitis/appendicitis in target.viruses)
-			app = 1
-			appendicitis.cure()
-			target.resistances += appendicitis
-		if (app)
-			new /obj/item/weapon/reagent_containers/food/snacks/appendix/inflamed(get_turf(target))
-		else
-			new /obj/item/weapon/reagent_containers/food/snacks/appendix(get_turf(target))
-		target.op_stage.appendix = 2
-		if (ishuman(user) && prob(40)) user:bloody_hands(target, 0)
-
-	fail_step(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
-		var/datum/organ/external/affected = target.get_organ(target_zone)
-		user.visible_message("\red [user]'s hand slips, nicking internal organs in [target]'s abdomen with \the [tool]!", \
-		"\red Your hand slips, nicking internal organs in [target]'s abdomen with \the [tool]!")
-		affected.createwound(BRUISE, 20)
-
-
-//////////////////////////////////////////////////////////////////
-//					INTERNAL WOUND PATCHING						//
-//////////////////////////////////////////////////////////////////
-
-
-/datum/surgery_step/fix_vein
-	required_tool = /obj/item/weapon/FixOVein
-	allowed_tools = list(/obj/item/weapon/cable_coil)
-
-	min_duration = 70
-	max_duration = 90
-
-	can_use(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
-		var/datum/organ/external/affected = target.get_organ(target_zone)
-
-		var/internal_bleeding = 0
-		for(var/datum/wound/W in affected.wounds) if(W.internal)
-			internal_bleeding = 1
-			break
-
-		return affected.open == 2 && internal_bleeding
-
-	begin_step(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
-		var/datum/organ/external/affected = target.get_organ(target_zone)
-		user.visible_message("[user] starts patching the damaged vein in [target]'s [affected.display_name] with \the [tool]." , \
-		"You start patching the damaged vein in [target]'s [affected.display_name] with \the [tool].")
-		target.custom_pain("The pain in [affected.display_name] is unbearable!",1)
-
-	end_step(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
-		var/datum/organ/external/affected = target.get_organ(target_zone)
-		user.visible_message("\blue [user] has patched the damaged vein in [target]'s [affected.display_name] with \the [tool].", \
-			"\blue You have patched the damaged vein in [target]'s [affected.display_name] with \the [tool].")
-
-		for(var/datum/wound/W in affected.wounds) if(W.internal)
-			affected.wounds -= W
-			affected.update_damages()
-		if (ishuman(user) && prob(40)) user:bloody_hands(target, 0)
-
-	fail_step(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
-		var/datum/organ/external/affected = target.get_organ(target_zone)
-		user.visible_message("\red [user]'s hand slips, smearing [tool] in the incision in [target]'s [affected.display_name]!" , \
-		"\red Your hand slips, smearing [tool] in the incision in [target]'s [affected.display_name]!")
-		affected.take_damage(5, 0)
-
-
-//////////////////////////////////////////////////////////////////
-//						BONE SURGERY							//
-//////////////////////////////////////////////////////////////////
-
-/datum/surgery_step/glue_bone
-	required_tool = /obj/item/weapon/bonegel
-	allowed_tools = list(/obj/item/weapon/screwdriver)
-
-	min_duration = 50
-	max_duration = 60
-
-	can_use(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
-		var/datum/organ/external/affected = target.get_organ(target_zone)
-		return affected.open == 2 && affected.stage == 0
-
-	begin_step(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
-		var/datum/organ/external/affected = target.get_organ(target_zone)
-		if (affected.stage == 0)
-			user.visible_message("[user] starts applying medication to the damaged bones in [target]'s [affected.display_name] with \the [tool]." , \
-			"You start applying medication to the damaged bones in [target]'s [affected.display_name] with \the [tool].")
-		target.custom_pain("Something in your [affected.display_name] is causing you a lot of pain!",1)
-
-	end_step(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
-		var/datum/organ/external/affected = target.get_organ(target_zone)
-		user.visible_message("\blue [user] applies some [tool] to [target]'s bone in [affected.display_name]", \
-			"\blue You apply some [tool] to [target]'s bone in [affected.display_name] with \the [tool].")
-		affected.stage = 1
-		spread_germs_to_organ(affected, user)
-		if (ishuman(user) && prob(80)) user:bloody_hands(target, 0)
-
-	fail_step(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
-		var/datum/organ/external/affected = target.get_organ(target_zone)
-		user.visible_message("\red [user]'s hand slips, smearing [tool] in the incision in [target]'s [affected.display_name]!" , \
-		"\red Your hand slips, smearing [tool] in the incision in [target]'s [affected.display_name]!")
-
-/datum/surgery_step/set_bone
-	required_tool = /obj/item/weapon/bonesetter
-	allowed_tools = list(/obj/item/weapon/wrench)
-
-	min_duration = 60
-	max_duration = 70
-
-	can_use(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
-		var/datum/organ/external/affected = target.get_organ(target_zone)
-		return affected.name != "head" && affected.open == 2 && affected.stage == 1
-
-	begin_step(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
-		var/datum/organ/external/affected = target.get_organ(target_zone)
-		user.visible_message("[user] is beginning to set the bone in [target]'s [affected.display_name] in place with \the [tool]." , \
-			"You are beginning to set the bone in [target]'s [affected.display_name] in place with \the [tool].")
-		target.custom_pain("The pain in your [affected.display_name] is going to make you pass out!",1)
-
-	end_step(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
-		var/datum/organ/external/affected = target.get_organ(target_zone)
-		if (affected.status & ORGAN_BROKEN)
-			user.visible_message("\blue [user] sets the bone in [target]'s [affected.display_name] in place with \the [tool].", \
-				"\blue You set the bone in [target]'s [affected.display_name] in place with \the [tool].")
-			affected.stage = 2
-			spread_germs_to_organ(affected, user)
-		else
-			user.visible_message("\blue [user] sets the bone in [target]'s [affected.display_name]\red in the WRONG place with \the [tool].", \
-				"\blue You set the bone in [target]'s [affected.display_name]\red in the WRONG place with \the [tool].")
-			affected.fracture()
-			spread_germs_to_organ(affected, user)
-
-	fail_step(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
-		var/datum/organ/external/affected = target.get_organ(target_zone)
-		user.visible_message("\red [user]'s hand slips, damaging the bone in [target]'s [affected.display_name] with \the [tool]!" , \
-			"\red Your hand slips, damaging the bone in [target]'s [affected.display_name] with \the [tool]!")
-		affected.createwound(BRUISE, 5)
-
-/datum/surgery_step/mend_skull
-	required_tool = /obj/item/weapon/bonesetter
-	allowed_tools = list(/obj/item/weapon/wrench)
-
-	min_duration = 60
-	max_duration = 70
-
-	can_use(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
-		var/datum/organ/external/affected = target.get_organ(target_zone)
-		return affected.name == "head" && affected.open == 2 && affected.stage == 1
-
-	begin_step(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
-		user.visible_message("[user] is beginning piece together [target]'s skull with \the [tool]."  , \
-			"You are beginning piece together [target]'s skull with \the [tool].")
-
-	end_step(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
-		var/datum/organ/external/affected = target.get_organ(target_zone)
-		user.visible_message("\blue [user] sets [target]'s skull with \the [tool]." , \
-			"\blue You set [target]'s skull with \the [tool].")
-		affected.stage = 2
-		spread_germs_to_organ(affected, user)
-
-	fail_step(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
-		var/datum/organ/external/affected = target.get_organ(target_zone)
-		user.visible_message("\red [user]'s hand slips, damaging [target]'s face with \the [tool]!"  , \
-			"\red Your hand slips, damaging [target]'s face with \the [tool]!")
-		var/datum/organ/external/head/h = affected
-		h.createwound(BRUISE, 10)
-		h.disfigured = 1
-
-/datum/surgery_step/finish_bone
-	required_tool = /obj/item/weapon/bonegel
-	allowed_tools = list(/obj/item/weapon/screwdriver)
-
-	min_duration = 50
-	max_duration = 60
-
-	can_use(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
-		var/datum/organ/external/affected = target.get_organ(target_zone)
-		return affected.open == 2 && affected.stage == 2
-
-	begin_step(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
-		var/datum/organ/external/affected = target.get_organ(target_zone)
-		user.visible_message("[user] starts to finish mending the damaged bones in [target]'s [affected.display_name] with \the [tool].", \
-		"You start to finish mending the damaged bones in [target]'s [affected.display_name] with \the [tool].")
-
-	end_step(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
-		var/datum/organ/external/affected = target.get_organ(target_zone)
-		user.visible_message("\blue [user] has mended the damaged bones in [target]'s [affected.display_name] with \the [tool]."  , \
-			"\blue You have mended the damaged bones in [target]'s [affected.display_name] with \the [tool]." )
-		affected.status &= ~ORGAN_BROKEN
-		affected.status &= ~ORGAN_SPLINTED
-		affected.stage = 0
-		affected.perma_injury = 0
-		spread_germs_to_organ(affected, user)
-		if (ishuman(user) && prob(80)) user:bloody_hands(target, 0)
-
-	fail_step(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
-		var/datum/organ/external/affected = target.get_organ(target_zone)
-		user.visible_message("\red [user]'s hand slips, smearing [tool] in the incision in [target]'s [affected.display_name]!" , \
-		"\red Your hand slips, smearing [tool] in the incision in [target]'s [affected.display_name]!")
-
-//////////////////////////////////////////////////////////////////
-//						EYE SURGERY							//
-//////////////////////////////////////////////////////////////////
-
-/datum/surgery_step/eye
-	can_use(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
-		if (!hasorgans(target))
-			return 0
-		var/datum/organ/external/affected = target.get_organ(target_zone)
-		if (!affected)
-			return 0
-		return target_zone == "eyes"
-
-/datum/surgery_step/eye/cut_open
-	required_tool = /obj/item/weapon/scalpel
-	allowed_tools = list(/obj/item/weapon/shard, /obj/item/weapon/kitchenknife)
-
-	min_duration = 90
-	max_duration = 110
-
-	can_use(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
-		return ..()
-
-	begin_step(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
-		user.visible_message("[user] starts to separate the corneas on [target]'s eyes with \the [tool].", \
-		"You start to separate the corneas on [target]'s eyes with \the [tool].")
-
-	end_step(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
-		user.visible_message("\blue [user] has separated the corneas on [target]'s eyes with \the [tool]." , \
-		"\blue You have separated the corneas on [target]'s eyes with \the [tool].",)
-		target.op_stage.eyes = 1
-
-	fail_step(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
-		var/datum/organ/external/affected = target.get_organ(target_zone)
-		user.visible_message("\red [user]'s hand slips, slicing [target]'s eyes wth \the [tool]!" , \
-		"\red Your hand slips, slicing [target]'s eyes wth \the [tool]!" )
-		affected.createwound(CUT, 10)
-
-/datum/surgery_step/eye/lift_eyes
-	required_tool = /obj/item/weapon/retractor
-	allowed_tools = list(/obj/item/weapon/kitchen/utensil/fork)
-
-	min_duration = 30
-	max_duration = 40
-
-	can_use(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
-		return ..() && target.op_stage.eyes == 1
-
-	begin_step(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
-		user.visible_message("[user] starts lifting corneas from [target]'s eyes with \the [tool].", \
-		"You start lifting corneas from [target]'s eyes with \the [tool].")
-
-	end_step(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
-		user.visible_message("\blue [user] has lifted the corneas from [target]'s eyes from with \the [tool]." , \
-		"\blue You has lifted the corneas from [target]'s eyes from with \the [tool]." )
-		target.op_stage.eyes = 2
-
-	fail_step(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
-		var/datum/organ/external/affected = target.get_organ(target_zone)
-		user.visible_message("\red [user]'s hand slips, damaging [target]'s eyes with \the [tool]!", \
-		"\red Your hand slips, damaging [target]'s eyes with \the [tool]!")
-		target.apply_damage(10, BRUTE, affected)
-
-/datum/surgery_step/eye/mend_eyes
-	required_tool = /obj/item/weapon/hemostat
-	allowed_tools = list(/obj/item/weapon/cable_coil, /obj/item/device/assembly/mousetrap)
-
-	min_duration = 80
-	max_duration = 100
-
-	can_use(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
-		return ..() && target.op_stage.eyes == 2
-
-	begin_step(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
-		user.visible_message("[user] starts mending the nerves and lenses in [target]'s eyes with \the [tool].", \
-		"You start mending the nerves and lenses in [target]'s eyes with the [tool].")
-
-	end_step(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
-		user.visible_message("\blue [user] mends the nerves and lenses in [target]'s with \the [tool]." ,	\
-		"\blue You mend the nerves and lenses in [target]'s with \the [tool].")
-		target.op_stage.eyes = 3
-
-	fail_step(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
-		var/datum/organ/external/affected = target.get_organ(target_zone)
-		user.visible_message("\red [user]'s hand slips, stabbing \the [tool] into [target]'s eye!", \
-		"\red Your hand slips, stabbing \the [tool] into [target]'s eye!")
-		target.apply_damage(10, BRUTE, affected)
-
-/datum/surgery_step/eye/cauterize
-	required_tool = /obj/item/weapon/cautery
-	allowed_tools = list(/obj/item/weapon/weldingtool, /obj/item/clothing/mask/cigarette, /obj/item/weapon/lighter)
-
-	min_duration = 70
-	max_duration = 100
-
-	can_use(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
-		return ..()
-
-	begin_step(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
-		user.visible_message("[user] is beginning to cauterize the incision around [target]'s eyes with \the [tool]." , \
-		"You are beginning to cauterize the incision around [target]'s eyes with \the [tool].")
-
-	end_step(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
-		user.visible_message("\blue [user] cauterizes the incision around [target]'s eyes with \the [tool].", \
-		"\blue You cauterize the incision around [target]'s eyes with \the [tool].")
-		if (target.op_stage.eyes == 3)
-			target.sdisabilities &= ~BLIND
-			target.eye_stat = 0
-		target.op_stage.eyes = 0
-
-	fail_step(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
-		var/datum/organ/external/affected = target.get_organ(target_zone)
-		user.visible_message("\red [user]'s hand slips,  searing [target]'s eyes with \the [tool]!", \
-		"\red Your hand slips, searing [target]'s eyes with \the [tool]!")
-		target.apply_damage(5, BURN, affected)
-		target.eye_stat += 5
-
-//////////////////////////////////////////////////////////////////
-//						FACE SURGERY							//
-//////////////////////////////////////////////////////////////////
-
-/datum/surgery_step/face
-	can_use(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
-		if (!hasorgans(target))
-			return 0
-		var/datum/organ/external/affected = target.get_organ(target_zone)
-		if (!affected)
-			return 0
-		return target_zone == "mouth" && affected.open == 2 && !(affected.status & ORGAN_BLEEDING)
-
-/datum/surgery_step/generic/cut_face
-	required_tool = /obj/item/weapon/scalpel
-	allowed_tools = list(/obj/item/weapon/shard, /obj/item/weapon/kitchenknife)
-
-	min_duration = 90
-	max_duration = 110
-
-	can_use(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
-		return ..() && target_zone == "mouth" && target.op_stage.face == 0
-
-	begin_step(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
-		user.visible_message("[user] starts to cut open [target]'s face and neck with \the [tool].", \
-		"You start to cut open [target]'s face and neck with \the [tool].")
-
-	end_step(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
-		user.visible_message("\blue [user] has cut open [target]'s face and neck with \the [tool]." , \
-		"\blue You have cut open [target]'s face and neck with \the [tool].",)
-		target.op_stage.face = 1
-
-	fail_step(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
-		var/datum/organ/external/affected = target.get_organ(target_zone)
-		user.visible_message("\red [user]'s hand slips, slicing [target]'s throat wth \the [tool]!" , \
-		"\red Your hand slips, slicing [target]'s throat wth \the [tool]!" )
-		affected.createwound(CUT, 60)
-		target.losebreath += 10
-
-/datum/surgery_step/face/mend_vocal
-	required_tool = /obj/item/weapon/hemostat
-	allowed_tools = list(/obj/item/weapon/cable_coil, /obj/item/device/assembly/mousetrap)
-
-	min_duration = 70
-	max_duration = 90
-
-	can_use(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
-		return ..() && target.op_stage.face == 1
-
-	begin_step(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
-		user.visible_message("[user] starts mending [target]'s vocal cords with \the [tool].", \
-		"You start mending [target]'s vocal cords with \the [tool].")
-
-	end_step(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
-		user.visible_message("\blue [user] mends [target]'s vocal cords with \the [tool].", \
-		"\blue You mend [target]'s vocal cords with \the [tool].")
-		target.op_stage.face = 2
-
-	fail_step(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
-		user.visible_message("\red [user]'s hand slips, clamping [target]'s trachea shut for a moment with \the [tool]!", \
-		"\red Your hand slips, clamping [user]'s trachea shut for a moment with \the [tool]!")
-		target.losebreath += 10
-		if (ishuman(user))
-			user:bloody_body(target)
-			user:bloody_hands(target, 0)
-
-/datum/surgery_step/face/fix_face
-	required_tool = /obj/item/weapon/retractor
-	allowed_tools = list(/obj/item/weapon/kitchen/utensil/fork)
-
-	min_duration = 80
-	max_duration = 100
-
-	can_use(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
-		return ..() && target.op_stage.face == 2
-
-	begin_step(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
-		user.visible_message("[user] starts pulling skin on [target]'s face back in place with \the [tool].", \
-		"You start pulling skin on [target]'s face back in place with \the [tool].")
-
-	end_step(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
-		user.visible_message("\blue [user] pulls skin on [target]'s face back in place with \the [tool].",	\
-		"\blue You pull skin on [target]'s face back in place with \the [tool].")
-		target.op_stage.face = 3
-
-	fail_step(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
-		var/datum/organ/external/affected = target.get_organ(target_zone)
-		user.visible_message("\red [user]'s hand slips, tearing skin on [target]'s face with \the [tool]!", \
-		"\red Your hand slips, tearing skin on [target]'s face with \the [tool]!")
-		target.apply_damage(10, BRUTE, affected)
-
-/datum/surgery_step/face/cauterize
-	required_tool = /obj/item/weapon/cautery
-	allowed_tools = list(/obj/item/weapon/weldingtool, /obj/item/clothing/mask/cigarette, /obj/item/weapon/lighter)
-
-	min_duration = 70
-	max_duration = 100
-
-	can_use(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
-		return ..() && target.op_stage.face > 0
-
-	begin_step(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
-		user.visible_message("[user] is beginning to cauterize the incision on [target]'s face and neck with \the [tool]." , \
-		"You are beginning to cauterize the incision on [target]'s face and neck with \the [tool].")
-
-	end_step(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
-		var/datum/organ/external/affected = target.get_organ(target_zone)
-		user.visible_message("\blue [user] cauterizes the incision on [target]'s face and neck with \the [tool].", \
-		"\blue You cauterize the incision on [target]'s face and neck with \the [tool].")
-		affected.open = 0
-		affected.status &= ~ORGAN_BLEEDING
-		if (target.op_stage.face == 3)
-			var/datum/organ/external/head/h = affected
-			h.disfigured = 0
-		target.op_stage.face = 0
-
-	fail_step(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
-		var/datum/organ/external/affected = target.get_organ(target_zone)
-		user.visible_message("\red [user]'s hand slips, leaving a small burn on [target]'s face with \the [tool]!", \
-		"\red Your hand slips, leaving a small burn on [target]'s face with \the [tool]!")
-		target.apply_damage(4, BURN, affected)
-
-//////////////////////////////////////////////////////////////////
-//						BRAIN SURGERY							//
-//////////////////////////////////////////////////////////////////
-
-/datum/surgery_step/brain/
-	can_use(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
-		return target_zone == "head" && hasorgans(target)
-
-/datum/surgery_step/brain/saw_skull
-	required_tool = /obj/item/weapon/circular_saw
-
-	min_duration = 50
-	max_duration = 70
-
-	can_use(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
-		return ..() && target_zone == "head" && target.brain_op_stage == 1
-
-	begin_step(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
-		user.visible_message("[user] begins to cut through [target]'s skull with \the [tool].", \
-		"You begin to cut through [target]'s skull with \the [tool].")
-
-	end_step(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
-		user.visible_message("\blue [user] has cut through [target]'s skull open with \the [tool].",		\
-		"\blue You have cut through [target]'s skull open with \the [tool].")
-		target.brain_op_stage = 2
-
-	fail_step(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
-		user.visible_message("\red [user]'s hand slips, cracking [target]'s skull with \the [tool]!" , \
-		"\red Your hand slips, cracking [target]'s skull with \the [tool]!" )
-		target.apply_damage(10, BRUTE, "head")
-
-/datum/surgery_step/brain/cut_brain
-	required_tool = /obj/item/weapon/scalpel
-	allowed_tools = list(/obj/item/weapon/shard, /obj/item/weapon/kitchenknife)
-
-	min_duration = 80
-	max_duration = 100
-
-	can_use(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
-		return ..() && target.brain_op_stage == 2
-
-	begin_step(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
-		user.visible_message("[user] starts separating connections to [target]'s brain with \the [tool].", \
-		"You start separating connections to [target]'s brain with \the [tool].")
-
-	end_step(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
-		user.visible_message("\blue [user] separates connections to [target]'s brain with \the [tool].",	\
-		"\blue You separate connections to [target]'s brain with \the [tool].")
-		target.brain_op_stage = 3
-
-	fail_step(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
-		user.visible_message("\red [user]'s hand slips, cutting a vein in [target]'s brain with \the [tool]!", \
-		"\red Your hand slips, cutting a vein in [target]'s brain with \the [tool]!")
-		target.apply_damage(50, BRUTE, "head", 1)
-		if (ishuman(user))
-			user:bloody_body(target)
-			user:bloody_hands(target, 0)
-
-/datum/surgery_step/brain/saw_spine
-	required_tool = /obj/item/weapon/circular_saw
-
-	min_duration = 50
-	max_duration = 70
-
-	can_use(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
-		return ..() && target.brain_op_stage == 3
-
-	begin_step(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
-		user.visible_message("[user] starts separating [target]'s brain from \his spine with \the [tool].", \
-		"You start separating [target]'s brain from spine with \the [tool].")
-
-	end_step(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
-		user.visible_message("\blue [user] separates [target]'s brain from \his spine with \the [tool].",	\
-		"\blue You separate [target]'s brain from spine with \the [tool].")
-
-		user.attack_log += "\[[time_stamp()]\]<font color='red'> Debrained [target.name] ([target.ckey]) with [tool.name] (INTENT: [uppertext(user.a_intent)])</font>"
-		target.attack_log += "\[[time_stamp()]\]<font color='orange'> Debrained by [user.name] ([user.ckey]) with [tool.name] (INTENT: [uppertext(user.a_intent)])</font>"
-
-		log_admin("ATTACK: [user] ([user.ckey]) debrained [target] ([target.ckey]) with [tool].")
-		message_admins("ATTACK: [user] ([user.ckey]) debrained [target] ([target.ckey]) with [tool].")
-		log_attack("<font color='red'>[user.name] ([user.ckey]) debrained [target.name] ([target.ckey]) with [tool.name] (INTENT: [uppertext(user.a_intent)])</font>")
-
-		var/obj/item/brain/B = new(target.loc)
-		B.transfer_identity(target)
-
-		target:brain_op_stage = 4.0
-		target.death()//You want them to die after the brain was transferred, so not to trigger client death() twice.
-
-	fail_step(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
-		user.visible_message("\red [user]'s hand slips, cutting a vein in [target]'s brain with \the [tool]!", \
-		"\red Your hand slips, cutting a vein in [target]'s brain with \the [tool]!")
-		target.apply_damage(30, BRUTE, "head", 1)
-		if (ishuman(user))
-			user:bloody_body(target)
-			user:bloody_hands(target, 0)
-
-
-//////////////////////////////////////////////////////////////////
-//				METROID CORE EXTRACTION							//
-//////////////////////////////////////////////////////////////////
-
-/datum/surgery_step/metroid/
-	can_use(mob/user, mob/living/carbon/metroid/target, target_zone, obj/item/tool)
-		return istype(target, /mob/living/carbon/metroid/) && target.stat == 2
-
-/datum/surgery_step/metroid/cut_flesh
-	required_tool = /obj/item/weapon/scalpel
-	allowed_tools = list(/obj/item/weapon/shard, /obj/item/weapon/kitchenknife)
-
-	min_duration = 30
-	max_duration = 50
-
-	can_use(mob/user, mob/living/carbon/metroid/target, target_zone, obj/item/tool)
-		return ..() && target.brain_op_stage == 0
-
-	begin_step(mob/user, mob/living/carbon/metroid/target, target_zone, obj/item/tool)
-		user.visible_message("[user] starts cutting [target]'s flesh with \the [tool].", \
-		"You start cutting [target]'s flesh with \the [tool].")
-
-	end_step(mob/user, mob/living/carbon/metroid/target, target_zone, obj/item/tool)
-		user.visible_message("\blue [user] cuts [target]'s flesh with \the [tool].",	\
-		"\blue You cut [target]'s flesh with \the [tool], exposing the cores")
-		target.brain_op_stage = 1
-
-	fail_step(mob/user, mob/living/carbon/metroid/target, target_zone, obj/item/tool)
-		user.visible_message("\red [user]'s hand slips, tearing [target]'s flesh with \the [tool]!", \
-		"\red Your hand slips, tearing [target]'s flesh with \the [tool]!")
-
-/datum/surgery_step/metroid/cut_innards
-	required_tool = /obj/item/weapon/scalpel
-	allowed_tools = list(/obj/item/weapon/shard, /obj/item/weapon/kitchenknife)
-
-	min_duration = 30
-	max_duration = 50
-
-	can_use(mob/user, mob/living/carbon/metroid/target, target_zone, obj/item/tool)
-		return ..() && target.brain_op_stage == 1
-
-	begin_step(mob/user, mob/living/carbon/metroid/target, target_zone, obj/item/tool)
-		user.visible_message("[user] starts cutting [target]'s silky innards apart with \the [tool].", \
-		"You start cutting [target]'s silky innards apart with \the [tool].")
-
-	end_step(mob/user, mob/living/carbon/metroid/target, target_zone, obj/item/tool)
-		user.visible_message("\blue [user] cuts [target]'s innards apart with \the [tool], exposing the cores",	\
-		"\blue You cut [target]'s innards apart with \the [tool], exposing the cores")
-		target.brain_op_stage = 2
-
-	fail_step(mob/user, mob/living/carbon/metroid/target, target_zone, obj/item/tool)
-		user.visible_message("\red [user]'s hand slips, tearing [target]'s innards with \the [tool]!", \
-		"\red Your hand slips, tearing [target]'s innards with \the [tool]!")
-
-/datum/surgery_step/metroid/saw_core
-	required_tool = /obj/item/weapon/circular_saw
-
-	min_duration = 50
-	max_duration = 70
-
-	can_use(mob/user, mob/living/carbon/metroid/target, target_zone, obj/item/tool)
-		return ..() && target.brain_op_stage == 2 && target.cores > 0
-
-	begin_step(mob/user, mob/living/carbon/metroid/target, target_zone, obj/item/tool)
-		user.visible_message("[user] starts cutting out one of [target]'s cores with \the [tool].", \
-		"You start cutting out one of [target]'s cores with \the [tool].")
-
-	end_step(mob/user, mob/living/carbon/metroid/target, target_zone, obj/item/tool)
-		target.cores--
-		user.visible_message("\blue [user] cuts out one of [target]'s cores with \the [tool].",,	\
-		"\blue You cut out one of [target]'s cores with \the [tool]. [target.cores] cores left.")
-		if(target.cores >= 0)
-			new/obj/item/metroid_core(target.loc)
-		if(target.cores <= 0)
-			target.icon_state = "baby roro dead-nocore"
-
-	fail_step(mob/user, mob/living/carbon/metroid/target, target_zone, obj/item/tool)
-		user.visible_message("\red [user]'s hand slips, failing to cut core out!", \
-		"\red Your hand slips, failing to cut core out!")
-
-//////////////////////////////////////////////////////////////////
-//						LIMB SURGERY							//
-//////////////////////////////////////////////////////////////////
-
-/datum/surgery_step/limb/
-	can_use(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
-		if (!hasorgans(target))
-			return 0
-		var/datum/organ/external/affected = target.get_organ(target_zone)
-		if (!affected)
-			return 0
-		if (!(affected.status & ORGAN_DESTROYED))
-			return 0
-		if (affected.parent)
-			if (affected.parent.status & ORGAN_DESTROYED)
-				return 0
-		return 1
-
-
-/datum/surgery_step/limb/cut
-	required_tool = /obj/item/weapon/scalpel
-	allowed_tools = list(/obj/item/weapon/shard, /obj/item/weapon/kitchenknife)
-
-	min_duration = 80
-	max_duration = 100
-
-	begin_step(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
-		var/datum/organ/external/affected = target.get_organ(target_zone)
-		user.visible_message("[user] starts cutting away flesh where [target]'s [affected.display_name] used to be with \the [tool].", \
-		"You start cutting away flesh where [target]'s [affected.display_name] used to be with \the [tool].")
-
-	end_step(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
-		var/datum/organ/external/affected = target.get_organ(target_zone)
-		user.visible_message("\blue [user] cuts away flesh where [target]'s [affected.display_name] used to be with \the [tool].",	\
-		"\blue You cut away flesh where [target]'s [affected.display_name] used to be with \the [tool].")
-		affected.status |= ORGAN_CUT_AWAY
-
-	fail_step(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
-		var/datum/organ/external/affected = target.get_organ(target_zone)
-		if (affected.parent)
-			affected = affected.parent
-			user.visible_message("\red [user]'s hand slips, cutting [target]'s [affected.display_name] open!", \
-			"\red Your hand slips,  cutting [target]'s [affected.display_name] open!")
-			affected.createwound(CUT, 10)
-
-
-/datum/surgery_step/limb/mend
-	required_tool = /obj/item/weapon/retractor
-	allowed_tools = list(/obj/item/weapon/kitchen/utensil/fork)
-
-	min_duration = 80
-	max_duration = 100
-
-	can_use(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
-		var/datum/organ/external/affected = target.get_organ(target_zone)
-		return ..() && affected.status & ORGAN_CUT_AWAY
-
-	begin_step(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
-		var/datum/organ/external/affected = target.get_organ(target_zone)
-		user.visible_message("[user] is beginning reposition flesh and nerve endings where where [target]'s [affected.display_name] used to be with [tool].", \
-		"You start repositioning flesh and nerve endings where where [target]'s [affected.display_name] used to be with [tool].")
-
-	end_step(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
-		var/datum/organ/external/affected = target.get_organ(target_zone)
-		user.visible_message("\blue [user] has finished repositioning flesh and nerve endings where [target]'s [affected.display_name] used to be with [tool].",	\
-		"\blue You have finished repositioning flesh and nerve endings where [target]'s [affected.display_name] used to be with [tool].")
-		affected.open = 3
-
-	fail_step(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
-		var/datum/organ/external/affected = target.get_organ(target_zone)
-		if (affected.parent)
-			affected = affected.parent
-			user.visible_message("\red [user]'s hand slips, tearing flesh on [target]'s [affected.display_name]!", \
-			"\red Your hand slips, tearing flesh on [target]'s [affected.display_name]!")
-			target.apply_damage(10, BRUTE, affected)
-
-
-/datum/surgery_step/limb/prepare
-	required_tool = /obj/item/weapon/cautery
-	allowed_tools = list(/obj/item/weapon/weldingtool, /obj/item/clothing/mask/cigarette, /obj/item/weapon/lighter)
-
-	min_duration = 60
-	max_duration = 70
-
-	can_use(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
-		var/datum/organ/external/affected = target.get_organ(target_zone)
-		return ..() && affected.open == 3
-
-	begin_step(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
-		var/datum/organ/external/affected = target.get_organ(target_zone)
-		user.visible_message("[user] starts adjusting area around [target]'s [affected.display_name] with \the [tool].", \
-		"You start adjusting area around [target]'s [affected.display_name] with \the [tool]..")
-
-	end_step(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
-		var/datum/organ/external/affected = target.get_organ(target_zone)
-		user.visible_message("\blue [user] has finished adjusting the area around [target]'s [affected.display_name] with \the [tool].",	\
-		"\blue You have finished adjusting the area around [target]'s [affected.display_name] with \the [tool].")
-		affected.status |= ORGAN_ATTACHABLE
-		affected.amputated = 1
-		affected.setAmputatedTree()
-		affected.open = 0
-
-	fail_step(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
-		var/datum/organ/external/affected = target.get_organ(target_zone)
-		if (affected.parent)
-			affected = affected.parent
-			user.visible_message("\red [user]'s hand slips, searing [target]'s [affected.display_name]!", \
-			"\red Your hand slips, searing [target]'s [affected.display_name]!")
-			target.apply_damage(10, BURN, affected)
-
-
-/datum/surgery_step/limb/attach
-	required_tool = /obj/item/robot_parts
-
-	min_duration = 80
-	max_duration = 100
-
-	can_use(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
-		var/obj/item/robot_parts/p = tool
-		if (p.part)
-			if (!(target_zone in p.part))
-				return 0
-		var/datum/organ/external/affected = target.get_organ(target_zone)
-		return ..() && affected.status & ORGAN_ATTACHABLE
-
-	begin_step(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
-		var/datum/organ/external/affected = target.get_organ(target_zone)
-		user.visible_message("[user] starts attaching [tool] where [target]'s [affected.display_name] used to be.", \
-		"You start attaching [tool] where [target]'s [affected.display_name] used to be.")
-
-	end_step(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
-		var/datum/organ/external/affected = target.get_organ(target_zone)
-		user.visible_message("\blue [user] has attached [tool] where [target]'s [affected.display_name] used to be.",	\
-		"\blue You have attached [tool] where [target]'s [affected.display_name] used to be.")
-		affected.robotize()
-		target.update_body()
-		target.updatehealth()
-		target.UpdateDamageIcon()
-		del(tool)
-
-	fail_step(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
-		var/datum/organ/external/affected = target.get_organ(target_zone)
-		user.visible_message("\red [user]'s hand slips, damaging connectors on [target]'s [affected.display_name]!", \
-		"\red Your hand slips, damaging connectors on [target]'s [affected.display_name]!")
-		target.apply_damage(10, BRUTE, affected)
-
-
-//////////////////////////////////////////////////////////////////
-//			RIBCAGE SURGERY(LUNGS AND ALIENS)					//
-//////////////////////////////////////////////////////////////////
-
-/datum/surgery_step/ribcage
-	can_use(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
-		return target_zone == "chest"
-
-/datum/surgery_step/ribcage/saw_ribcage
-	required_tool = /obj/item/weapon/circular_saw
-
-	min_duration = 50
-	max_duration = 70
-
-	can_use(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
-		var/datum/organ/external/affected = target.get_organ(target_zone)
-		return ..() && target.ribcage_op_stage == 0 && affected.open >= 2
-
-	begin_step(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
-		user.visible_message("[user] begins to cut through [target]'s ribcage with \the [tool].", \
-		"You begin to cut through [target]'s ribcage with \the [tool].")
-		target.custom_pain("Something hurts horribly in your chest!",1)
-
-	end_step(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
-		user.visible_message("\blue [user] has cut through [target]'s ribcage open with \the [tool].",		\
-		"\blue You have cut through [target]'s ribcage open with \the [tool].")
-		target.ribcage_op_stage = 1
-
-	fail_step(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
-		user.visible_message("\red [user]'s hand slips, cracking [target]'s ribcage with \the [tool]!" , \
-		"\red Your hand slips, cracking [target]'s ribcage with \the [tool]!" )
-
-
-/datum/surgery_step/ribcage/retract_ribcage
-	required_tool = /obj/item/weapon/retractor
-	allowed_tools = list(/obj/item/weapon/crowbar)
-
-	min_duration = 30
-	max_duration = 40
-
-	can_use(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
-		return ..() && target.ribcage_op_stage == 1
-
-	begin_step(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
-		var/msg = "[user] starts to force open the ribcage in [target]'s torso with \the [tool]."
-		var/self_msg = "You start to force open the ribcage in [target]'s torso with \the [tool]."
-		user.visible_message(msg, self_msg)
-		target.custom_pain("Something hurts horribly in your chest!",1)
-
-	end_step(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
-		var/msg = "\blue [user] forces open [target]'s ribcage with \the [tool]."
-		var/self_msg = "\blue You force open [target]'s ribcage with \the [tool]."
-		user.visible_message(msg, self_msg)
-		target.ribcage_op_stage = 2
-
-		// Whoops!
-		if(prob(10))
-			var/datum/organ/external/affected = target.get_organ(target_zone)
-			affected.fracture()
-
-		if (ishuman(user))
-			user:bloody_hands(target, 0)
-
-	fail_step(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
-		var/msg = "\red [user]'s hand slips, breaking [target]'s ribcage!"
-		var/self_msg = "\red Your hand slips, breaking [target]'s ribcage!"
-		user.visible_message(msg, self_msg)
-		var/datum/organ/external/affected = target.get_organ(target_zone)
-		affected.fracture()
-
-/datum/surgery_step/ribcage/close_ribcage
-	required_tool = /obj/item/weapon/retractor
-	allowed_tools = list(/obj/item/weapon/crowbar)
-
-	min_duration = 20
-	max_duration = 40
-
-	can_use(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
-		return ..() && target.ribcage_op_stage == 2
-
-	begin_step(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
-		var/msg = "[user] starts bending [target]'s ribcage back into place with \the [tool]."
-		var/self_msg = "You start bending [target]'s ribcage back into place with \the [tool]."
-		user.visible_message(msg, self_msg)
-		target.custom_pain("Something hurts horribly in your chest!",1)
-
-	end_step(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
-		var/msg = "\blue [user] bends [target]'s ribcage back into place with \the [tool]."
-		var/self_msg = "\blue You bend [target]'s ribcage back into place with \the [tool]."
-		user.visible_message(msg, self_msg)
-
-		target.ribcage_op_stage = 1
-
-/datum/surgery_step/ribcage/mend_ribcage
-	required_tool = /obj/item/weapon/bonegel
-
-	min_duration = 20
-	max_duration = 40
-
-	can_use(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
-		return ..() && target.ribcage_op_stage == 1
-
-	begin_step(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
-		var/msg = "[user] starts applying \the [tool] to [target]'s ribcage."
-		var/self_msg = "You start applying \the [tool] to [target]'s ribcage."
-		user.visible_message(msg, self_msg)
-		target.custom_pain("Something hurts horribly in your chest!",1)
-
-
-	end_step(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
-		var/msg = "\blue [user] applied \the [tool] to [target]'s ribcage."
-		var/self_msg = "\blue You applied \the [tool] to [target]'s ribcage."
-		user.visible_message(msg, self_msg)
-
-		target.ribcage_op_stage = 0
-
-
-/datum/surgery_step/ribcage/remove_embryo
-	required_tool = /obj/item/weapon/hemostat
-
-	min_duration = 80
-	max_duration = 100
-
-	can_use(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
-		var/embryo = 0
-		for(var/datum/disease/alien_embryo/A in target.viruses)
-			embryo = 1
-			break
-		return ..() && embryo && target.ribcage_op_stage == 2
-
-	begin_step(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
-		var/msg = "[user] starts to pull something out from [target]'s ribcage with \the [tool]."
-		var/self_msg = "You start to pull something out from [target]'s ribcage with \the [tool]."
-		user.visible_message(msg, self_msg)
-		target.custom_pain("Something hurts horribly in your chest!",1)
-
-	end_step(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
-		user.visible_message("\red [user] rips the larva out of [target]'s ribcage!",
-							 "You rip the larva out of [target]'s ribcage!")
-
-		var/mob/living/carbon/alien/larva/stupid = new(target.loc)
-		stupid.death(0)
-
-		for(var/datum/disease/alien_embryo in target.viruses)
-			alien_embryo.cure()
-
-		if (ishuman(user)) user:bloody_hands(target, 0)
-
-/datum/surgery_step/ribcage/fix_lungs
-	required_tool = /obj/item/weapon/scalpel
-	allowed_tools = list(/obj/item/weapon/shard, /obj/item/weapon/kitchenknife)
-
-	min_duration = 70
-	max_duration = 90
-
-	can_use(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
-		return ..() && target.is_lung_ruptured() && target.ribcage_op_stage == 2
-
-	begin_step(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
-		user.visible_message("[user] starts mending the rupture in [target]'s lungs with \the [tool].", \
-		"You start mending the rupture in [target]'s lungs with \the [tool]." )
-		target.custom_pain("The pain in your chest is living hell!",1)
-
-	end_step(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
-		var/datum/organ/external/chest/affected = target.get_organ("chest")
-		user.visible_message("\blue [user] mends the rupture in [target]'s lungs with \the [tool].", \
-		"\blue You mend the rupture in [target]'s lungs with \the [tool]." )
-		affected.ruptured_lungs = 0
-		if (ishuman(user) && prob(80)) user:bloody_hands(target, 0)
-
-	fail_step(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
-		var/datum/organ/external/chest/affected = target.get_organ("chest")
-		user.visible_message("\red [user]'s hand slips, slicing an artery inside [target]'s chest with \the [tool]!", \
-		"\red Your hand slips, slicing an artery inside [target]'s chest with \the [tool]!")
-		affected.createwound(CUT, 20)
-		if (ishuman(user))
-			user:bloody_hands(target, 0)
-			user:bloody_body(target)
-
-//////////////////////////////////////////////////////////////////
-//					IMPLANT REMOVAL SURGERY						//
-//////////////////////////////////////////////////////////////////
-
-/datum/surgery_step/implant_removal
-	required_tool = /obj/item/weapon/hemostat
-	allowed_tools = list(/obj/item/weapon/wirecutters, /obj/item/weapon/kitchen/utensil/fork)
-
-	min_duration = 80
-	max_duration = 100
-
-	can_use(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
-		var/datum/organ/external/affected = target.get_organ(target_zone)
-		return affected.open == 2 && !(affected.status & ORGAN_BLEEDING)
-
-	begin_step(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
-		var/datum/organ/external/affected = target.get_organ(target_zone)
-		user.visible_message("[user] starts poking around inside the incision on [target]'s [affected.display_name] with \the [tool].", \
-		"You start poking around inside the incision on [target]'s [affected.display_name] with \the [tool]" )
-		target.custom_pain("The pain in your chest is living hell!",1)
-
-	end_step(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
-		var/datum/organ/external/chest/affected = target.get_organ(target_zone)
-
-		var/find_prob = 0
-		if (affected.implants.len)
-			var/obj/item/weapon/implant/imp = affected.implants[1]
-			if (imp.islegal())
-				find_prob +=60
-			else
-				find_prob +=40
-			if (isright(tool))
-				find_prob +=20
-
-		if (prob(find_prob))
-			user.visible_message("\blue [user] takes something out of incision on [target]'s [affected.display_name] with \the [tool].", \
-			"\blue You take something out of incision on [target]'s [affected.display_name]s with \the [tool]." )
-			var/obj/item/weapon/implant/imp = affected.implants[1]
-			affected.implants -= imp
-			imp.loc = get_turf(target)
-			imp.imp_in = null
-			imp.implanted = 0
-		else
-			user.visible_message("\blue [user] could not find anything inside [target]'s [affected.display_name], and pulls \the [tool] out.", \
-			"\blue You could not find anything inside [target]'s [affected.display_name]." )
-		if (ishuman(user) && prob(80)) user:bloody_hands(target, 0)
-
-	fail_step(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
-		var/datum/organ/external/chest/affected = target.get_organ(target_zone)
-		user.visible_message("\red [user]'s hand slips, scraping tissue inside [target]'s [affected.display_name] with \the [tool]!", \
-		"\red Your hand slips, scraping tissue inside [target]'s [affected.display_name] with \the [tool]!")
-		affected.createwound(CUT, 20)
-		if (affected.implants.len)
-			var/fail_prob = 10
-			if (!isright(tool))
-				fail_prob += 30
-			if (prob(fail_prob))
-				var/obj/item/weapon/implant/imp = affected.implants[1]
-				user.visible_message("\red Something beeps inside [target]'s [affected.display_name]!")
-				playsound(imp.loc, 'sound/items/countdown.ogg', 75, 1, -3)
-				spawn(25)
-					imp.activate()
-		if (ishuman(user))
-			user:bloody_hands(target, 0)
-			user:bloody_body(target)
\ No newline at end of file
diff --git a/code/datums/organs/organ_external.dm b/code/datums/organs/organ_external.dm
index 4b92cb04e17..32da1df83c9 100644
--- a/code/datums/organs/organ_external.dm
+++ b/code/datums/organs/organ_external.dm
@@ -224,6 +224,7 @@
 
 	proc/clamp()
 		var/rval = 0
+		src.status &= ~ORGAN_BLEEDING
 		for(var/datum/wound/W in wounds)
 			if(W.internal) continue
 			rval |= !W.clamped
diff --git a/code/game/objects/items.dm b/code/game/objects/items.dm
index b2c9caaa15c..c98f36f390f 100644
--- a/code/game/objects/items.dm
+++ b/code/game/objects/items.dm
@@ -188,19 +188,8 @@
 		return
 
 	if (can_operate(M))	//Checks if mob is lying down on table for surgery
-		if(istype(M,/mob/living/carbon))
-			if (user.a_intent != "harm")	//check for Hippocratic Oath
-				if(surgery_steps.len == 0) build_surgery_steps_list()
-				for(var/datum/surgery_step/S in surgery_steps)
-					if( S.isright(src) || S.isacceptable(src) )	 						//check if tool is right or close enough
-						if(S.can_use(user, M, user.zone_sel.selecting, src))			//and if this step is possible
-							S.begin_step(user, M, user.zone_sel.selecting, src)			//start on it
-							if(do_mob(user, M, rand(S.min_duration, S.max_duration)))	//if user did nto move or changed hands
-								S.end_step(user, M, user.zone_sel.selecting, src)		//finish successfully
-							else														//or
-								S.fail_step(user, M, user.zone_sel.selecting, src)		//malpractice~
-							return		  												//don't want to do weapony things after surgery
-
+		if (do_surgery(M,user,src))
+			return
 
 	var/messagesource = M
 
diff --git a/code/modules/mob/living/carbon/carbon_defines.dm b/code/modules/mob/living/carbon/carbon_defines.dm
index fdb6b71d586..be27645f955 100644
--- a/code/modules/mob/living/carbon/carbon_defines.dm
+++ b/code/modules/mob/living/carbon/carbon_defines.dm
@@ -1,12 +1,6 @@
 /mob/living/carbon/
 	gender = MALE
 	var/list/stomach_contents = list()
-	var/brain_op_stage = 0.0
-	var/ribcage_op_stage = 0
-/*
-	var/eye_op_stage = 0.0
-	var/appendix_op_stage = 0.0
-*/
 	var/datum/disease2/disease/virus2 = null
 	var/list/datum/disease2/disease/resistances2 = list()
 
@@ -22,3 +16,6 @@
 	var/number_wounds = 0
 	var/obj/item/handcuffed = null //Whether or not the mob is handcuffed
 	var/obj/item/legcuffed = null  //Same as handcuffs but for legs. Bear traps use this.
+	//Surgery info
+	var/brain_op_stage = 0.0
+	var/datum/surgery_status/op_stage = new/datum/surgery_status
diff --git a/code/modules/surgery/appendix.dm b/code/modules/surgery/appendix.dm
new file mode 100644
index 00000000000..0cae30f21c4
--- /dev/null
+++ b/code/modules/surgery/appendix.dm
@@ -0,0 +1,81 @@
+//Procedures in this file: Appendectomy
+//////////////////////////////////////////////////////////////////
+//						APPENDECTOMY							//
+//////////////////////////////////////////////////////////////////
+
+/datum/surgery_step/appendectomy/
+	var/datum/organ/external/groin
+	can_use(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
+		if (target_zone != "groin")
+			return 0
+		groin = target.get_organ("groin")
+		if (!groin)
+			return 0
+		if (groin.open < 2)
+			return 0
+		return 1
+
+/datum/surgery_step/appendectomy/cut_appendix
+	required_tool = /obj/item/weapon/scalpel
+	allowed_tools = list(/obj/item/weapon/shard, /obj/item/weapon/kitchenknife)
+
+	min_duration = 70
+	max_duration = 90
+
+	can_use(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
+		return ..() && target.op_stage.appendix == 0
+
+	begin_step(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
+		user.visible_message("[user] starts to separating [target]'s appendix from the abdominal wall with \the [tool].", \
+		"You start to separating [target]'s appendix from the abdominal wall with \the [tool]." )
+		target.custom_pain("The pain in your abdomen is living hell!",1)
+
+	end_step(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
+		user.visible_message("\blue [user] has separated [target]'s appendix with \the [tool]." , \
+		"\blue You have separated [target]'s appendix with \the [tool].")
+		target.op_stage.appendix = 1
+		if (ishuman(user) && prob(40)) user:bloody_hands(target, 0)
+
+	fail_step(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
+		var/datum/organ/external/groin = target.get_organ("groin")
+		user.visible_message("\red [user]'s hand slips, slicing an artery inside [target]'s abdomen with \the [tool]!", \
+		"\red Your hand slips, slicing an artery inside [target]'s abdomen with \the [tool]!")
+		groin.createwound(CUT, 50, 1)
+		if (ishuman(user))
+			user:bloody_body(target)
+
+/datum/surgery_step/appendectomy/remove_appendix
+	required_tool = /obj/item/weapon/hemostat
+	allowed_tools = list(/obj/item/weapon/wirecutters)
+
+	min_duration = 60
+	max_duration = 80
+
+	can_use(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
+		return ..() && target.op_stage.appendix == 1
+
+	begin_step(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
+		user.visible_message("[user] starts removing [target]'s appendix with \the [tool].", \
+		"You start removing [target]'s appendix with \the [tool].")
+		target.custom_pain("Someone's ripping out your bowels!",1)
+
+	end_step(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
+		user.visible_message("\blue [user] has removed [target]'s appendix with \the [tool].", \
+		"\blue You have removed [target]'s appendix with \the [tool].")
+		var/app = 0
+		for(var/datum/disease/appendicitis/appendicitis in target.viruses)
+			app = 1
+			appendicitis.cure()
+			target.resistances += appendicitis
+		if (app)
+			new /obj/item/weapon/reagent_containers/food/snacks/appendix/inflamed(get_turf(target))
+		else
+			new /obj/item/weapon/reagent_containers/food/snacks/appendix(get_turf(target))
+		target.op_stage.appendix = 2
+		if (ishuman(user) && prob(40)) user:bloody_hands(target, 0)
+
+	fail_step(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
+		var/datum/organ/external/affected = target.get_organ(target_zone)
+		user.visible_message("\red [user]'s hand slips, nicking internal organs in [target]'s abdomen with \the [tool]!", \
+		"\red Your hand slips, nicking internal organs in [target]'s abdomen with \the [tool]!")
+		affected.createwound(BRUISE, 20)
diff --git a/code/modules/surgery/bones.dm b/code/modules/surgery/bones.dm
new file mode 100644
index 00000000000..ae5a8ea1bff
--- /dev/null
+++ b/code/modules/surgery/bones.dm
@@ -0,0 +1,133 @@
+//Procedures in this file: Fracture repair surgery
+//////////////////////////////////////////////////////////////////
+//						BONE SURGERY							//
+//////////////////////////////////////////////////////////////////
+
+/datum/surgery_step/glue_bone
+	required_tool = /obj/item/weapon/bonegel
+	allowed_tools = list(/obj/item/weapon/screwdriver)
+
+	min_duration = 50
+	max_duration = 60
+
+	can_use(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
+		var/datum/organ/external/affected = target.get_organ(target_zone)
+		return affected.open == 2 && affected.stage == 0
+
+	begin_step(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
+		var/datum/organ/external/affected = target.get_organ(target_zone)
+		if (affected.stage == 0)
+			user.visible_message("[user] starts applying medication to the damaged bones in [target]'s [affected.display_name] with \the [tool]." , \
+			"You start applying medication to the damaged bones in [target]'s [affected.display_name] with \the [tool].")
+		target.custom_pain("Something in your [affected.display_name] is causing you a lot of pain!",1)
+
+	end_step(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
+		var/datum/organ/external/affected = target.get_organ(target_zone)
+		user.visible_message("\blue [user] applies some [tool] to [target]'s bone in [affected.display_name]", \
+			"\blue You apply some [tool] to [target]'s bone in [affected.display_name] with \the [tool].")
+		affected.stage = 1
+		spread_germs_to_organ(affected, user)
+		if (ishuman(user) && prob(80)) user:bloody_hands(target, 0)
+
+	fail_step(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
+		var/datum/organ/external/affected = target.get_organ(target_zone)
+		user.visible_message("\red [user]'s hand slips, smearing [tool] in the incision in [target]'s [affected.display_name]!" , \
+		"\red Your hand slips, smearing [tool] in the incision in [target]'s [affected.display_name]!")
+
+/datum/surgery_step/set_bone
+	required_tool = /obj/item/weapon/bonesetter
+	allowed_tools = list(/obj/item/weapon/wrench)
+
+	min_duration = 60
+	max_duration = 70
+
+	can_use(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
+		var/datum/organ/external/affected = target.get_organ(target_zone)
+		return affected.name != "head" && affected.open == 2 && affected.stage == 1
+
+	begin_step(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
+		var/datum/organ/external/affected = target.get_organ(target_zone)
+		user.visible_message("[user] is beginning to set the bone in [target]'s [affected.display_name] in place with \the [tool]." , \
+			"You are beginning to set the bone in [target]'s [affected.display_name] in place with \the [tool].")
+		target.custom_pain("The pain in your [affected.display_name] is going to make you pass out!",1)
+
+	end_step(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
+		var/datum/organ/external/affected = target.get_organ(target_zone)
+		if (affected.status & ORGAN_BROKEN)
+			user.visible_message("\blue [user] sets the bone in [target]'s [affected.display_name] in place with \the [tool].", \
+				"\blue You set the bone in [target]'s [affected.display_name] in place with \the [tool].")
+			affected.stage = 2
+			spread_germs_to_organ(affected, user)
+		else
+			user.visible_message("\blue [user] sets the bone in [target]'s [affected.display_name]\red in the WRONG place with \the [tool].", \
+				"\blue You set the bone in [target]'s [affected.display_name]\red in the WRONG place with \the [tool].")
+			affected.fracture()
+			spread_germs_to_organ(affected, user)
+
+	fail_step(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
+		var/datum/organ/external/affected = target.get_organ(target_zone)
+		user.visible_message("\red [user]'s hand slips, damaging the bone in [target]'s [affected.display_name] with \the [tool]!" , \
+			"\red Your hand slips, damaging the bone in [target]'s [affected.display_name] with \the [tool]!")
+		affected.createwound(BRUISE, 5)
+
+/datum/surgery_step/mend_skull
+	required_tool = /obj/item/weapon/bonesetter
+	allowed_tools = list(/obj/item/weapon/wrench)
+
+	min_duration = 60
+	max_duration = 70
+
+	can_use(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
+		var/datum/organ/external/affected = target.get_organ(target_zone)
+		return affected.name == "head" && affected.open == 2 && affected.stage == 1
+
+	begin_step(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
+		user.visible_message("[user] is beginning piece together [target]'s skull with \the [tool]."  , \
+			"You are beginning piece together [target]'s skull with \the [tool].")
+
+	end_step(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
+		var/datum/organ/external/affected = target.get_organ(target_zone)
+		user.visible_message("\blue [user] sets [target]'s skull with \the [tool]." , \
+			"\blue You set [target]'s skull with \the [tool].")
+		affected.stage = 2
+		spread_germs_to_organ(affected, user)
+
+	fail_step(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
+		var/datum/organ/external/affected = target.get_organ(target_zone)
+		user.visible_message("\red [user]'s hand slips, damaging [target]'s face with \the [tool]!"  , \
+			"\red Your hand slips, damaging [target]'s face with \the [tool]!")
+		var/datum/organ/external/head/h = affected
+		h.createwound(BRUISE, 10)
+		h.disfigured = 1
+
+/datum/surgery_step/finish_bone
+	required_tool = /obj/item/weapon/bonegel
+	allowed_tools = list(/obj/item/weapon/screwdriver)
+
+	min_duration = 50
+	max_duration = 60
+
+	can_use(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
+		var/datum/organ/external/affected = target.get_organ(target_zone)
+		return affected.open == 2 && affected.stage == 2
+
+	begin_step(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
+		var/datum/organ/external/affected = target.get_organ(target_zone)
+		user.visible_message("[user] starts to finish mending the damaged bones in [target]'s [affected.display_name] with \the [tool].", \
+		"You start to finish mending the damaged bones in [target]'s [affected.display_name] with \the [tool].")
+
+	end_step(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
+		var/datum/organ/external/affected = target.get_organ(target_zone)
+		user.visible_message("\blue [user] has mended the damaged bones in [target]'s [affected.display_name] with \the [tool]."  , \
+			"\blue You have mended the damaged bones in [target]'s [affected.display_name] with \the [tool]." )
+		affected.status &= ~ORGAN_BROKEN
+		affected.status &= ~ORGAN_SPLINTED
+		affected.stage = 0
+		affected.perma_injury = 0
+		spread_germs_to_organ(affected, user)
+		if (ishuman(user) && prob(80)) user:bloody_hands(target, 0)
+
+	fail_step(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
+		var/datum/organ/external/affected = target.get_organ(target_zone)
+		user.visible_message("\red [user]'s hand slips, smearing [tool] in the incision in [target]'s [affected.display_name]!" , \
+		"\red Your hand slips, smearing [tool] in the incision in [target]'s [affected.display_name]!")
\ No newline at end of file
diff --git a/code/modules/surgery/braincore.dm b/code/modules/surgery/braincore.dm
new file mode 100644
index 00000000000..45b328fe5dc
--- /dev/null
+++ b/code/modules/surgery/braincore.dm
@@ -0,0 +1,177 @@
+//Procedures in this file: Brain extraction. Metroid Core extraction.
+//////////////////////////////////////////////////////////////////
+//						BRAIN SURGERY							//
+//////////////////////////////////////////////////////////////////
+
+/datum/surgery_step/brain/
+	can_use(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
+		return target_zone == "head" && hasorgans(target)
+
+/datum/surgery_step/brain/saw_skull
+	required_tool = /obj/item/weapon/circular_saw
+
+	min_duration = 50
+	max_duration = 70
+
+	can_use(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
+		return ..() && target_zone == "head" && target.brain_op_stage == 1
+
+	begin_step(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
+		user.visible_message("[user] begins to cut through [target]'s skull with \the [tool].", \
+		"You begin to cut through [target]'s skull with \the [tool].")
+
+	end_step(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
+		user.visible_message("\blue [user] has cut through [target]'s skull open with \the [tool].",		\
+		"\blue You have cut through [target]'s skull open with \the [tool].")
+		target.brain_op_stage = 2
+
+	fail_step(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
+		user.visible_message("\red [user]'s hand slips, cracking [target]'s skull with \the [tool]!" , \
+		"\red Your hand slips, cracking [target]'s skull with \the [tool]!" )
+		target.apply_damage(10, BRUTE, "head")
+
+/datum/surgery_step/brain/cut_brain
+	required_tool = /obj/item/weapon/scalpel
+	allowed_tools = list(/obj/item/weapon/shard, /obj/item/weapon/kitchenknife)
+
+	min_duration = 80
+	max_duration = 100
+
+	can_use(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
+		return ..() && target.brain_op_stage == 2
+
+	begin_step(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
+		user.visible_message("[user] starts separating connections to [target]'s brain with \the [tool].", \
+		"You start separating connections to [target]'s brain with \the [tool].")
+
+	end_step(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
+		user.visible_message("\blue [user] separates connections to [target]'s brain with \the [tool].",	\
+		"\blue You separate connections to [target]'s brain with \the [tool].")
+		target.brain_op_stage = 3
+
+	fail_step(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
+		user.visible_message("\red [user]'s hand slips, cutting a vein in [target]'s brain with \the [tool]!", \
+		"\red Your hand slips, cutting a vein in [target]'s brain with \the [tool]!")
+		target.apply_damage(50, BRUTE, "head", 1)
+		if (ishuman(user))
+			user:bloody_body(target)
+			user:bloody_hands(target, 0)
+
+/datum/surgery_step/brain/saw_spine
+	required_tool = /obj/item/weapon/circular_saw
+
+	min_duration = 50
+	max_duration = 70
+
+	can_use(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
+		return ..() && target.brain_op_stage == 3
+
+	begin_step(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
+		user.visible_message("[user] starts separating [target]'s brain from \his spine with \the [tool].", \
+		"You start separating [target]'s brain from spine with \the [tool].")
+
+	end_step(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
+		user.visible_message("\blue [user] separates [target]'s brain from \his spine with \the [tool].",	\
+		"\blue You separate [target]'s brain from spine with \the [tool].")
+
+		user.attack_log += "\[[time_stamp()]\]<font color='red'> Debrained [target.name] ([target.ckey]) with [tool.name] (INTENT: [uppertext(user.a_intent)])</font>"
+		target.attack_log += "\[[time_stamp()]\]<font color='orange'> Debrained by [user.name] ([user.ckey]) with [tool.name] (INTENT: [uppertext(user.a_intent)])</font>"
+
+		log_admin("ATTACK: [user] ([user.ckey]) debrained [target] ([target.ckey]) with [tool].")
+		message_admins("ATTACK: [user] ([user.ckey]) debrained [target] ([target.ckey]) with [tool].")
+		log_attack("<font color='red'>[user.name] ([user.ckey]) debrained [target.name] ([target.ckey]) with [tool.name] (INTENT: [uppertext(user.a_intent)])</font>")
+
+		var/obj/item/brain/B = new(target.loc)
+		B.transfer_identity(target)
+
+		target:brain_op_stage = 4.0
+		target.death()//You want them to die after the brain was transferred, so not to trigger client death() twice.
+
+	fail_step(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
+		user.visible_message("\red [user]'s hand slips, cutting a vein in [target]'s brain with \the [tool]!", \
+		"\red Your hand slips, cutting a vein in [target]'s brain with \the [tool]!")
+		target.apply_damage(30, BRUTE, "head", 1)
+		if (ishuman(user))
+			user:bloody_body(target)
+			user:bloody_hands(target, 0)
+
+
+//////////////////////////////////////////////////////////////////
+//				METROID CORE EXTRACTION							//
+//////////////////////////////////////////////////////////////////
+
+/datum/surgery_step/metroid/
+	can_use(mob/user, mob/living/carbon/metroid/target, target_zone, obj/item/tool)
+		return istype(target, /mob/living/carbon/metroid/) && target.stat == 2
+
+/datum/surgery_step/metroid/cut_flesh
+	required_tool = /obj/item/weapon/scalpel
+	allowed_tools = list(/obj/item/weapon/shard, /obj/item/weapon/kitchenknife)
+
+	min_duration = 30
+	max_duration = 50
+
+	can_use(mob/user, mob/living/carbon/metroid/target, target_zone, obj/item/tool)
+		return ..() && target.brain_op_stage == 0
+
+	begin_step(mob/user, mob/living/carbon/metroid/target, target_zone, obj/item/tool)
+		user.visible_message("[user] starts cutting [target]'s flesh with \the [tool].", \
+		"You start cutting [target]'s flesh with \the [tool].")
+
+	end_step(mob/user, mob/living/carbon/metroid/target, target_zone, obj/item/tool)
+		user.visible_message("\blue [user] cuts [target]'s flesh with \the [tool].",	\
+		"\blue You cut [target]'s flesh with \the [tool], exposing the cores")
+		target.brain_op_stage = 1
+
+	fail_step(mob/user, mob/living/carbon/metroid/target, target_zone, obj/item/tool)
+		user.visible_message("\red [user]'s hand slips, tearing [target]'s flesh with \the [tool]!", \
+		"\red Your hand slips, tearing [target]'s flesh with \the [tool]!")
+
+/datum/surgery_step/metroid/cut_innards
+	required_tool = /obj/item/weapon/scalpel
+	allowed_tools = list(/obj/item/weapon/shard, /obj/item/weapon/kitchenknife)
+
+	min_duration = 30
+	max_duration = 50
+
+	can_use(mob/user, mob/living/carbon/metroid/target, target_zone, obj/item/tool)
+		return ..() && target.brain_op_stage == 1
+
+	begin_step(mob/user, mob/living/carbon/metroid/target, target_zone, obj/item/tool)
+		user.visible_message("[user] starts cutting [target]'s silky innards apart with \the [tool].", \
+		"You start cutting [target]'s silky innards apart with \the [tool].")
+
+	end_step(mob/user, mob/living/carbon/metroid/target, target_zone, obj/item/tool)
+		user.visible_message("\blue [user] cuts [target]'s innards apart with \the [tool], exposing the cores",	\
+		"\blue You cut [target]'s innards apart with \the [tool], exposing the cores")
+		target.brain_op_stage = 2
+
+	fail_step(mob/user, mob/living/carbon/metroid/target, target_zone, obj/item/tool)
+		user.visible_message("\red [user]'s hand slips, tearing [target]'s innards with \the [tool]!", \
+		"\red Your hand slips, tearing [target]'s innards with \the [tool]!")
+
+/datum/surgery_step/metroid/saw_core
+	required_tool = /obj/item/weapon/circular_saw
+
+	min_duration = 50
+	max_duration = 70
+
+	can_use(mob/user, mob/living/carbon/metroid/target, target_zone, obj/item/tool)
+		return ..() && target.brain_op_stage == 2 && target.cores > 0
+
+	begin_step(mob/user, mob/living/carbon/metroid/target, target_zone, obj/item/tool)
+		user.visible_message("[user] starts cutting out one of [target]'s cores with \the [tool].", \
+		"You start cutting out one of [target]'s cores with \the [tool].")
+
+	end_step(mob/user, mob/living/carbon/metroid/target, target_zone, obj/item/tool)
+		target.cores--
+		user.visible_message("\blue [user] cuts out one of [target]'s cores with \the [tool].",,	\
+		"\blue You cut out one of [target]'s cores with \the [tool]. [target.cores] cores left.")
+		if(target.cores >= 0)
+			new/obj/item/metroid_core(target.loc)
+		if(target.cores <= 0)
+			target.icon_state = "baby roro dead-nocore"
+
+	fail_step(mob/user, mob/living/carbon/metroid/target, target_zone, obj/item/tool)
+		user.visible_message("\red [user]'s hand slips, failing to cut core out!", \
+		"\red Your hand slips, failing to cut core out!")
\ No newline at end of file
diff --git a/code/modules/surgery/eye.dm b/code/modules/surgery/eye.dm
new file mode 100644
index 00000000000..fc9842f69b7
--- /dev/null
+++ b/code/modules/surgery/eye.dm
@@ -0,0 +1,117 @@
+//Procedures in this file: Eye mending surgery
+//////////////////////////////////////////////////////////////////
+//						EYE SURGERY							//
+//////////////////////////////////////////////////////////////////
+
+/datum/surgery_step/eye
+	can_use(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
+		if (!hasorgans(target))
+			return 0
+		var/datum/organ/external/affected = target.get_organ(target_zone)
+		if (!affected)
+			return 0
+		return target_zone == "eyes"
+
+/datum/surgery_step/eye/cut_open
+	required_tool = /obj/item/weapon/scalpel
+	allowed_tools = list(/obj/item/weapon/shard, /obj/item/weapon/kitchenknife)
+
+	min_duration = 90
+	max_duration = 110
+
+	can_use(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
+		return ..()
+
+	begin_step(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
+		user.visible_message("[user] starts to separate the corneas on [target]'s eyes with \the [tool].", \
+		"You start to separate the corneas on [target]'s eyes with \the [tool].")
+
+	end_step(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
+		user.visible_message("\blue [user] has separated the corneas on [target]'s eyes with \the [tool]." , \
+		"\blue You have separated the corneas on [target]'s eyes with \the [tool].",)
+		target.op_stage.eyes = 1
+
+	fail_step(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
+		var/datum/organ/external/affected = target.get_organ(target_zone)
+		user.visible_message("\red [user]'s hand slips, slicing [target]'s eyes wth \the [tool]!" , \
+		"\red Your hand slips, slicing [target]'s eyes wth \the [tool]!" )
+		affected.createwound(CUT, 10)
+
+/datum/surgery_step/eye/lift_eyes
+	required_tool = /obj/item/weapon/retractor
+	allowed_tools = list(/obj/item/weapon/kitchen/utensil/fork)
+
+	min_duration = 30
+	max_duration = 40
+
+	can_use(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
+		return ..() && target.op_stage.eyes == 1
+
+	begin_step(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
+		user.visible_message("[user] starts lifting corneas from [target]'s eyes with \the [tool].", \
+		"You start lifting corneas from [target]'s eyes with \the [tool].")
+
+	end_step(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
+		user.visible_message("\blue [user] has lifted the corneas from [target]'s eyes from with \the [tool]." , \
+		"\blue You has lifted the corneas from [target]'s eyes from with \the [tool]." )
+		target.op_stage.eyes = 2
+
+	fail_step(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
+		var/datum/organ/external/affected = target.get_organ(target_zone)
+		user.visible_message("\red [user]'s hand slips, damaging [target]'s eyes with \the [tool]!", \
+		"\red Your hand slips, damaging [target]'s eyes with \the [tool]!")
+		target.apply_damage(10, BRUTE, affected)
+
+/datum/surgery_step/eye/mend_eyes
+	required_tool = /obj/item/weapon/hemostat
+	allowed_tools = list(/obj/item/weapon/cable_coil, /obj/item/device/assembly/mousetrap)
+
+	min_duration = 80
+	max_duration = 100
+
+	can_use(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
+		return ..() && target.op_stage.eyes == 2
+
+	begin_step(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
+		user.visible_message("[user] starts mending the nerves and lenses in [target]'s eyes with \the [tool].", \
+		"You start mending the nerves and lenses in [target]'s eyes with the [tool].")
+
+	end_step(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
+		user.visible_message("\blue [user] mends the nerves and lenses in [target]'s with \the [tool]." ,	\
+		"\blue You mend the nerves and lenses in [target]'s with \the [tool].")
+		target.op_stage.eyes = 3
+
+	fail_step(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
+		var/datum/organ/external/affected = target.get_organ(target_zone)
+		user.visible_message("\red [user]'s hand slips, stabbing \the [tool] into [target]'s eye!", \
+		"\red Your hand slips, stabbing \the [tool] into [target]'s eye!")
+		target.apply_damage(10, BRUTE, affected)
+
+/datum/surgery_step/eye/cauterize
+	required_tool = /obj/item/weapon/cautery
+	allowed_tools = list(/obj/item/weapon/weldingtool, /obj/item/clothing/mask/cigarette, /obj/item/weapon/lighter)
+
+	min_duration = 70
+	max_duration = 100
+
+	can_use(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
+		return ..()
+
+	begin_step(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
+		user.visible_message("[user] is beginning to cauterize the incision around [target]'s eyes with \the [tool]." , \
+		"You are beginning to cauterize the incision around [target]'s eyes with \the [tool].")
+
+	end_step(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
+		user.visible_message("\blue [user] cauterizes the incision around [target]'s eyes with \the [tool].", \
+		"\blue You cauterize the incision around [target]'s eyes with \the [tool].")
+		if (target.op_stage.eyes == 3)
+			target.sdisabilities &= ~BLIND
+			target.eye_stat = 0
+		target.op_stage.eyes = 0
+
+	fail_step(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
+		var/datum/organ/external/affected = target.get_organ(target_zone)
+		user.visible_message("\red [user]'s hand slips,  searing [target]'s eyes with \the [tool]!", \
+		"\red Your hand slips, searing [target]'s eyes with \the [tool]!")
+		target.apply_damage(5, BURN, affected)
+		target.eye_stat += 5
\ No newline at end of file
diff --git a/code/modules/surgery/face.dm b/code/modules/surgery/face.dm
new file mode 100644
index 00000000000..8ea34d590d3
--- /dev/null
+++ b/code/modules/surgery/face.dm
@@ -0,0 +1,122 @@
+//Procedures in this file: Facial reconstruction surgery
+//////////////////////////////////////////////////////////////////
+//						FACE SURGERY							//
+//////////////////////////////////////////////////////////////////
+
+/datum/surgery_step/face
+	can_use(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
+		if (!hasorgans(target))
+			return 0
+		var/datum/organ/external/affected = target.get_organ(target_zone)
+		if (!affected)
+			return 0
+		return target_zone == "mouth" && affected.open == 2 && !(affected.status & ORGAN_BLEEDING)
+
+/datum/surgery_step/generic/cut_face
+	required_tool = /obj/item/weapon/scalpel
+	allowed_tools = list(/obj/item/weapon/shard, /obj/item/weapon/kitchenknife)
+
+	min_duration = 90
+	max_duration = 110
+
+	can_use(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
+		return ..() && target_zone == "mouth" && target.op_stage.face == 0
+
+	begin_step(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
+		user.visible_message("[user] starts to cut open [target]'s face and neck with \the [tool].", \
+		"You start to cut open [target]'s face and neck with \the [tool].")
+
+	end_step(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
+		user.visible_message("\blue [user] has cut open [target]'s face and neck with \the [tool]." , \
+		"\blue You have cut open [target]'s face and neck with \the [tool].",)
+		target.op_stage.face = 1
+
+	fail_step(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
+		var/datum/organ/external/affected = target.get_organ(target_zone)
+		user.visible_message("\red [user]'s hand slips, slicing [target]'s throat wth \the [tool]!" , \
+		"\red Your hand slips, slicing [target]'s throat wth \the [tool]!" )
+		affected.createwound(CUT, 60)
+		target.losebreath += 10
+
+/datum/surgery_step/face/mend_vocal
+	required_tool = /obj/item/weapon/hemostat
+	allowed_tools = list(/obj/item/weapon/cable_coil, /obj/item/device/assembly/mousetrap)
+
+	min_duration = 70
+	max_duration = 90
+
+	can_use(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
+		return ..() && target.op_stage.face == 1
+
+	begin_step(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
+		user.visible_message("[user] starts mending [target]'s vocal cords with \the [tool].", \
+		"You start mending [target]'s vocal cords with \the [tool].")
+
+	end_step(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
+		user.visible_message("\blue [user] mends [target]'s vocal cords with \the [tool].", \
+		"\blue You mend [target]'s vocal cords with \the [tool].")
+		target.op_stage.face = 2
+
+	fail_step(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
+		user.visible_message("\red [user]'s hand slips, clamping [target]'s trachea shut for a moment with \the [tool]!", \
+		"\red Your hand slips, clamping [user]'s trachea shut for a moment with \the [tool]!")
+		target.losebreath += 10
+		if (ishuman(user))
+			user:bloody_body(target)
+			user:bloody_hands(target, 0)
+
+/datum/surgery_step/face/fix_face
+	required_tool = /obj/item/weapon/retractor
+	allowed_tools = list(/obj/item/weapon/kitchen/utensil/fork)
+
+	min_duration = 80
+	max_duration = 100
+
+	can_use(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
+		return ..() && target.op_stage.face == 2
+
+	begin_step(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
+		user.visible_message("[user] starts pulling skin on [target]'s face back in place with \the [tool].", \
+		"You start pulling skin on [target]'s face back in place with \the [tool].")
+
+	end_step(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
+		user.visible_message("\blue [user] pulls skin on [target]'s face back in place with \the [tool].",	\
+		"\blue You pull skin on [target]'s face back in place with \the [tool].")
+		target.op_stage.face = 3
+
+	fail_step(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
+		var/datum/organ/external/affected = target.get_organ(target_zone)
+		user.visible_message("\red [user]'s hand slips, tearing skin on [target]'s face with \the [tool]!", \
+		"\red Your hand slips, tearing skin on [target]'s face with \the [tool]!")
+		target.apply_damage(10, BRUTE, affected)
+
+/datum/surgery_step/face/cauterize
+	required_tool = /obj/item/weapon/cautery
+	allowed_tools = list(/obj/item/weapon/weldingtool, /obj/item/clothing/mask/cigarette, /obj/item/weapon/lighter)
+
+	min_duration = 70
+	max_duration = 100
+
+	can_use(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
+		return ..() && target.op_stage.face > 0
+
+	begin_step(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
+		user.visible_message("[user] is beginning to cauterize the incision on [target]'s face and neck with \the [tool]." , \
+		"You are beginning to cauterize the incision on [target]'s face and neck with \the [tool].")
+
+	end_step(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
+		var/datum/organ/external/affected = target.get_organ(target_zone)
+		user.visible_message("\blue [user] cauterizes the incision on [target]'s face and neck with \the [tool].", \
+		"\blue You cauterize the incision on [target]'s face and neck with \the [tool].")
+		affected.open = 0
+		affected.status &= ~ORGAN_BLEEDING
+		if (target.op_stage.face == 3)
+			var/datum/organ/external/head/h = affected
+			h.disfigured = 0
+		target.op_stage.face = 0
+
+	fail_step(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
+		var/datum/organ/external/affected = target.get_organ(target_zone)
+		user.visible_message("\red [user]'s hand slips, leaving a small burn on [target]'s face with \the [tool]!", \
+		"\red Your hand slips, leaving a small burn on [target]'s face with \the [tool]!")
+		target.apply_damage(4, BURN, affected)
\ No newline at end of file
diff --git a/code/modules/surgery/generic.dm b/code/modules/surgery/generic.dm
new file mode 100644
index 00000000000..264418774e2
--- /dev/null
+++ b/code/modules/surgery/generic.dm
@@ -0,0 +1,165 @@
+//Procedures in this file: Gneric surgery steps
+//////////////////////////////////////////////////////////////////
+//						COMMON STEPS							//
+//////////////////////////////////////////////////////////////////
+/datum/surgery_step/generic/
+	var/datum/organ/external/affected	//affected organ
+	can_use(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
+		if (target_zone == "eyes")	//there are specific steps for eye surgery
+			return 0
+		if (!hasorgans(target))
+			return 0
+		affected = target.get_organ(target_zone)
+		if (affected == null)
+			return 0
+		if (affected.status & ORGAN_DESTROYED)
+			return 0
+		if (affected.status & ORGAN_ROBOT)
+			return 0
+		return 1
+
+/datum/surgery_step/generic/cut_open
+	required_tool = /obj/item/weapon/scalpel
+	allowed_tools = list(/obj/item/weapon/shard, /obj/item/weapon/kitchenknife)
+
+	min_duration = 90
+	max_duration = 110
+
+	can_use(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
+		return ..() && affected.open == 0 && target_zone != "mouth"
+
+	begin_step(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
+		var/datum/organ/external/affected = target.get_organ(target_zone)
+		user.visible_message("[user] starts the incision on [target]'s [affected.display_name] with \the [tool].", \
+		"You start the incision on [target]'s [affected.display_name] with \the [tool].")
+		target.custom_pain("You feel a horrible pain as if from a sharp knife in your [affected.display_name]!",1)
+
+	end_step(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
+		var/datum/organ/external/affected = target.get_organ(target_zone)
+		user.visible_message("\blue [user] has made an incision on [target]'s [affected.display_name] with \the [tool].", \
+		"\blue You have made an incision on [target]'s [affected.display_name] with \the [tool].",)
+		affected.open = 1
+		affected.createwound(CUT, 1)
+		spread_germs_to_organ(affected, user)
+		if (target_zone == "head")
+			target.brain_op_stage = 1
+
+	fail_step(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
+		var/datum/organ/external/affected = target.get_organ(target_zone)
+		user.visible_message("\red [user]'s hand slips, slicing open [target]'s [affected.display_name] in a wrong spot with \the [tool]!", \
+		"\red Your hand slips, slicing open [target]'s [affected.display_name] in a wrong spot with \the [tool]!")
+		affected.createwound(CUT, 10)
+		if (ishuman(user))
+			user:bloody_hands(target, 0)
+
+/datum/surgery_step/generic/clamp_bleeders
+	required_tool = /obj/item/weapon/hemostat
+	allowed_tools = list(/obj/item/weapon/cable_coil, /obj/item/device/assembly/mousetrap)
+
+	min_duration = 40
+	max_duration = 60
+
+	can_use(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
+		return ..() && affected.open && (affected.status & ORGAN_BLEEDING)
+
+	begin_step(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
+		var/datum/organ/external/affected = target.get_organ(target_zone)
+		user.visible_message("[user] starts clamping bleeders in [target]'s [affected.display_name] with \the [tool].", \
+		"You start clamping bleeders in [target]'s [affected.display_name] with \the [tool].")
+		target.custom_pain("The pain in your [affected.display_name] is maddening!",1)
+
+	end_step(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
+		var/datum/organ/external/affected = target.get_organ(target_zone)
+		user.visible_message("\blue [user] clamps bleeders in [target]'s [affected.display_name] with \the [tool].",	\
+		"\blue You clamp bleeders in [target]'s [affected.display_name] with \the [tool].")
+		affected.clamp()
+		spread_germs_to_organ(affected, user)
+
+	fail_step(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
+		var/datum/organ/external/affected = target.get_organ(target_zone)
+		user.visible_message("\red [user]'s hand slips, tearing blood vessals and causing massive bleeding in [target]'s [affected.display_name] with the \[tool]!",	\
+		"\red Your hand slips, tearing blood vessels and causing massive bleeding in [target]'s [affected.display_name] with \the [tool]!",)
+		affected.createwound(CUT, 10)
+		if (ishuman(user))
+			user:bloody_hands(target, 0)
+
+/datum/surgery_step/generic/retract_skin
+	required_tool = /obj/item/weapon/retractor
+	allowed_tools = list(/obj/item/weapon/kitchen/utensil/fork)
+
+	min_duration = 30
+	max_duration = 40
+
+	can_use(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
+		return ..() && affected.open < 2 && !(affected.status & ORGAN_BLEEDING)
+
+	begin_step(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
+		var/datum/organ/external/affected = target.get_organ(target_zone)
+		var/msg = "[user] starts to pry open the incision on [target]'s [affected.display_name] with \the [tool]."
+		var/self_msg = "You start to pry open the incision on [target]'s [affected.display_name] with \the [tool]."
+		if (target_zone == "chest")
+			msg = "[user] starts to separate the ribcage and rearrange the organs in [target]'s torso with \the [tool]."
+			self_msg = "You start to separate the ribcage and rearrange the organs in [target]'s torso with \the [tool]."
+		if (target_zone == "groin")
+			msg = "[user] starts to pry open the incision and rearrange the organs in [target]'s lower abdomen with \the [tool]."
+			self_msg = "You start to pry open the incision and rearrange the organs in [target]'s lower abdomen with \the [tool]."
+		user.visible_message(msg, self_msg)
+		target.custom_pain("It feels like the skin on your [affected.display_name] is on fire!",1)
+
+	end_step(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
+		var/datum/organ/external/affected = target.get_organ(target_zone)
+		var/msg = "\blue [user] keeps the incision open on [target]'s [affected.display_name] with \the [tool]."
+		var/self_msg = "\blue You keep the incision open on [target]'s [affected.display_name] with \the [tool]."
+		if (target_zone == "chest")
+			msg = "\blue [user] keeps the ribcage open on [target]'s torso with \the [tool]."
+			self_msg = "\blue You keep the ribcage open on [target]'s torso with \the [tool]."
+		if (target_zone == "groin")
+			msg = "\blue [user] keeps the incision open on [target]'s lower abdomen with \the [tool]."
+			self_msg = "\blue You keep the incision open on [target]'s lower abdomen with \the [tool]."
+		user.visible_message(msg, self_msg)
+		affected.open = 2
+		spread_germs_to_organ(affected, user)
+		if (prob(40)) user:bloody_hands(target, 0)
+
+	fail_step(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
+		var/datum/organ/external/affected = target.get_organ(target_zone)
+		var/msg = "\red [user]'s hand slips, tearing the edges of incision on [target]'s [affected.display_name] with \the [tool]!"
+		var/self_msg = "\red Your hand slips, tearing the edges of incision on [target]'s [affected.display_name] with \the [tool]!"
+		if (target_zone == "chest")
+			msg = "\red [user]'s hand slips, damaging several organs [target]'s torso with \the [tool]!"
+			self_msg = "\red Your hand slips, damaging several organs [target]'s torso with \the [tool]!"
+		if (target_zone == "groin")
+			msg = "\red [user]'s hand slips, damaging several organs [target]'s lower abdomen with \the [tool]"
+			self_msg = "\red Your hand slips, damaging several organs [target]'s lower abdomen with \the [tool]!"
+		user.visible_message(msg, self_msg)
+		target.apply_damage(12, BRUTE, affected)
+
+/datum/surgery_step/generic/cauterize
+	required_tool = /obj/item/weapon/cautery
+	allowed_tools = list(/obj/item/weapon/weldingtool, /obj/item/clothing/mask/cigarette, /obj/item/weapon/lighter)
+
+	min_duration = 70
+	max_duration = 100
+
+	can_use(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
+		return ..() && affected.open && target_zone != "mouth"
+
+	begin_step(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
+		var/datum/organ/external/affected = target.get_organ(target_zone)
+		user.visible_message("[user] is beginning to cauterize the incision on [target]'s [affected.display_name] with \the [tool]." , \
+		"You are beginning to cauterize the incision on [target]'s [affected.display_name] with \the [tool].")
+		target.custom_pain("Your [affected.display_name] is being burned!",1)
+
+	end_step(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
+		var/datum/organ/external/affected = target.get_organ(target_zone)
+		user.visible_message("\blue [user] cauterizes the incision on [target]'s [affected.display_name] with \the [tool].", \
+		"\blue You cauterize the incision on [target]'s [affected.display_name] with \the [tool].")
+		affected.open = 0
+		affected.germ_level = 0
+		affected.status &= ~ORGAN_BLEEDING
+
+	fail_step(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
+		var/datum/organ/external/affected = target.get_organ(target_zone)
+		user.visible_message("\red [user]'s hand slips, leaving a small burn on [target]'s [affected.display_name] with \the [tool]!", \
+		"\red Your hand slips, leaving a small burn on [target]'s [affected.display_name] with \the [tool]!")
+		target.apply_damage(3, BURN, affected)
\ No newline at end of file
diff --git a/code/modules/surgery/other.dm b/code/modules/surgery/other.dm
new file mode 100644
index 00000000000..0cb00773cdf
--- /dev/null
+++ b/code/modules/surgery/other.dm
@@ -0,0 +1,110 @@
+//Procedures in this file: Inernal wound patching, Implant removal.
+//////////////////////////////////////////////////////////////////
+//					INTERNAL WOUND PATCHING						//
+//////////////////////////////////////////////////////////////////
+
+
+/datum/surgery_step/fix_vein
+	required_tool = /obj/item/weapon/FixOVein
+	allowed_tools = list(/obj/item/weapon/cable_coil)
+
+	min_duration = 70
+	max_duration = 90
+
+	can_use(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
+		var/datum/organ/external/affected = target.get_organ(target_zone)
+
+		var/internal_bleeding = 0
+		for(var/datum/wound/W in affected.wounds) if(W.internal)
+			internal_bleeding = 1
+			break
+
+		return affected.open == 2 && internal_bleeding
+
+	begin_step(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
+		var/datum/organ/external/affected = target.get_organ(target_zone)
+		user.visible_message("[user] starts patching the damaged vein in [target]'s [affected.display_name] with \the [tool]." , \
+		"You start patching the damaged vein in [target]'s [affected.display_name] with \the [tool].")
+		target.custom_pain("The pain in [affected.display_name] is unbearable!",1)
+
+	end_step(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
+		var/datum/organ/external/affected = target.get_organ(target_zone)
+		user.visible_message("\blue [user] has patched the damaged vein in [target]'s [affected.display_name] with \the [tool].", \
+			"\blue You have patched the damaged vein in [target]'s [affected.display_name] with \the [tool].")
+
+		for(var/datum/wound/W in affected.wounds) if(W.internal)
+			affected.wounds -= W
+			affected.update_damages()
+		if (ishuman(user) && prob(40)) user:bloody_hands(target, 0)
+
+	fail_step(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
+		var/datum/organ/external/affected = target.get_organ(target_zone)
+		user.visible_message("\red [user]'s hand slips, smearing [tool] in the incision in [target]'s [affected.display_name]!" , \
+		"\red Your hand slips, smearing [tool] in the incision in [target]'s [affected.display_name]!")
+		affected.take_damage(5, 0)
+
+//////////////////////////////////////////////////////////////////
+//					IMPLANT REMOVAL SURGERY						//
+//////////////////////////////////////////////////////////////////
+
+/datum/surgery_step/implant_removal
+	required_tool = /obj/item/weapon/hemostat
+	allowed_tools = list(/obj/item/weapon/wirecutters, /obj/item/weapon/kitchen/utensil/fork)
+
+	min_duration = 80
+	max_duration = 100
+
+	can_use(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
+		var/datum/organ/external/affected = target.get_organ(target_zone)
+		return affected.open == 2 && !(affected.status & ORGAN_BLEEDING)
+
+	begin_step(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
+		var/datum/organ/external/affected = target.get_organ(target_zone)
+		user.visible_message("[user] starts poking around inside the incision on [target]'s [affected.display_name] with \the [tool].", \
+		"You start poking around inside the incision on [target]'s [affected.display_name] with \the [tool]" )
+		target.custom_pain("The pain in your chest is living hell!",1)
+
+	end_step(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
+		var/datum/organ/external/chest/affected = target.get_organ(target_zone)
+
+		var/find_prob = 0
+		if (affected.implants.len)
+			var/obj/item/weapon/implant/imp = affected.implants[1]
+			if (imp.islegal())
+				find_prob +=60
+			else
+				find_prob +=40
+			if (isright(tool))
+				find_prob +=20
+
+		if (prob(find_prob))
+			user.visible_message("\blue [user] takes something out of incision on [target]'s [affected.display_name] with \the [tool].", \
+			"\blue You take something out of incision on [target]'s [affected.display_name]s with \the [tool]." )
+			var/obj/item/weapon/implant/imp = affected.implants[1]
+			affected.implants -= imp
+			imp.loc = get_turf(target)
+			imp.imp_in = null
+			imp.implanted = 0
+		else
+			user.visible_message("\blue [user] could not find anything inside [target]'s [affected.display_name], and pulls \the [tool] out.", \
+			"\blue You could not find anything inside [target]'s [affected.display_name]." )
+		if (ishuman(user) && prob(80)) user:bloody_hands(target, 0)
+
+	fail_step(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
+		var/datum/organ/external/chest/affected = target.get_organ(target_zone)
+		user.visible_message("\red [user]'s hand slips, scraping tissue inside [target]'s [affected.display_name] with \the [tool]!", \
+		"\red Your hand slips, scraping tissue inside [target]'s [affected.display_name] with \the [tool]!")
+		affected.createwound(CUT, 20)
+		if (affected.implants.len)
+			var/fail_prob = 10
+			if (!isright(tool))
+				fail_prob += 30
+			if (prob(fail_prob))
+				var/obj/item/weapon/implant/imp = affected.implants[1]
+				user.visible_message("\red Something beeps inside [target]'s [affected.display_name]!")
+				playsound(imp.loc, 'sound/items/countdown.ogg', 75, 1, -3)
+				spawn(25)
+					imp.activate()
+		if (ishuman(user))
+			user:bloody_hands(target, 0)
+			user:bloody_body(target)
\ No newline at end of file
diff --git a/code/modules/surgery/ribcage.dm b/code/modules/surgery/ribcage.dm
new file mode 100644
index 00000000000..492edbafcfa
--- /dev/null
+++ b/code/modules/surgery/ribcage.dm
@@ -0,0 +1,206 @@
+//Procedures in this file: Generic ribcage opening steps, Removing alien embryo, Fixing ruptured lungs
+//////////////////////////////////////////////////////////////////
+//				GENERIC	RIBCAGE SURGERY							//
+//////////////////////////////////////////////////////////////////
+/datum/surgery_step/ribcage
+	can_use(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
+		return target_zone == "chest"
+
+/datum/surgery_step/ribcage/saw_ribcage
+	required_tool = /obj/item/weapon/circular_saw
+
+	min_duration = 50
+	max_duration = 70
+
+	can_use(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
+		var/datum/organ/external/affected = target.get_organ(target_zone)
+		return ..() && target.op_stage.ribcage == 0 && affected.open >= 2
+
+	begin_step(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
+		user.visible_message("[user] begins to cut through [target]'s ribcage with \the [tool].", \
+		"You begin to cut through [target]'s ribcage with \the [tool].")
+		target.custom_pain("Something hurts horribly in your chest!",1)
+
+	end_step(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
+		user.visible_message("\blue [user] has cut through [target]'s ribcage open with \the [tool].",		\
+		"\blue You have cut through [target]'s ribcage open with \the [tool].")
+		target.op_stage.ribcage = 1
+
+	fail_step(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
+		user.visible_message("\red [user]'s hand slips, cracking [target]'s ribcage with \the [tool]!" , \
+		"\red Your hand slips, cracking [target]'s ribcage with \the [tool]!" )
+		var/datum/organ/external/affected = target.get_organ(target_zone)
+		affected.createwound(CUT, 20)
+		affected.fracture()
+
+
+/datum/surgery_step/ribcage/retract_ribcage
+	required_tool = /obj/item/weapon/retractor
+	allowed_tools = list(/obj/item/weapon/crowbar)
+
+	min_duration = 30
+	max_duration = 40
+
+	can_use(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
+		return ..() && target.op_stage.ribcage == 1
+
+	begin_step(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
+		var/msg = "[user] starts to force open the ribcage in [target]'s torso with \the [tool]."
+		var/self_msg = "You start to force open the ribcage in [target]'s torso with \the [tool]."
+		user.visible_message(msg, self_msg)
+		target.custom_pain("Something hurts horribly in your chest!",1)
+
+	end_step(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
+		var/msg = "\blue [user] forces open [target]'s ribcage with \the [tool]."
+		var/self_msg = "\blue You force open [target]'s ribcage with \the [tool]."
+		user.visible_message(msg, self_msg)
+		target.op_stage.ribcage = 2
+
+		// Whoops!
+		if(prob(10))
+			var/datum/organ/external/affected = target.get_organ(target_zone)
+			affected.fracture()
+
+		if (ishuman(user))
+			user:bloody_hands(target, 0)
+
+	fail_step(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
+		var/msg = "\red [user]'s hand slips, breaking [target]'s ribcage!"
+		var/self_msg = "\red Your hand slips, breaking [target]'s ribcage!"
+		user.visible_message(msg, self_msg)
+		var/datum/organ/external/affected = target.get_organ(target_zone)
+		affected.createwound(BRUISE, 20)
+		affected.fracture()
+
+/datum/surgery_step/ribcage/close_ribcage
+	required_tool = /obj/item/weapon/retractor
+	allowed_tools = list(/obj/item/weapon/crowbar)
+
+	min_duration = 20
+	max_duration = 40
+
+	can_use(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
+		return ..() && target.op_stage.ribcage == 2
+
+	begin_step(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
+		var/msg = "[user] starts bending [target]'s ribcage back into place with \the [tool]."
+		var/self_msg = "You start bending [target]'s ribcage back into place with \the [tool]."
+		user.visible_message(msg, self_msg)
+		target.custom_pain("Something hurts horribly in your chest!",1)
+
+	end_step(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
+		var/msg = "\blue [user] bends [target]'s ribcage back into place with \the [tool]."
+		var/self_msg = "\blue You bend [target]'s ribcage back into place with \the [tool]."
+		user.visible_message(msg, self_msg)
+
+		target.op_stage.ribcage = 1
+
+	fail_step(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
+		var/msg = "\red [user]'s hand slips, bending [target]'s ribcage in a wrong shape!"
+		var/self_msg = "\red Your hand slips, bending [target]'s ribcage in a wrong shape!"
+		user.visible_message(msg, self_msg)
+		var/datum/organ/external/chest/affected = target.get_organ("chest")
+		affected.createwound(BRUISE, 20)
+		affected.fracture()
+		if (prob(40))
+			user.visible_message("\red Rib pierces the lung!")
+			affected.ruptured_lungs = 1
+
+/datum/surgery_step/ribcage/mend_ribcage
+	required_tool = /obj/item/weapon/bonegel
+
+	min_duration = 20
+	max_duration = 40
+
+	can_use(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
+		return ..() && target.op_stage.ribcage == 1
+
+	begin_step(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
+		var/msg = "[user] starts applying \the [tool] to [target]'s ribcage."
+		var/self_msg = "You start applying \the [tool] to [target]'s ribcage."
+		user.visible_message(msg, self_msg)
+		target.custom_pain("Something hurts horribly in your chest!",1)
+
+
+	end_step(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
+		var/msg = "\blue [user] applied \the [tool] to [target]'s ribcage."
+		var/self_msg = "\blue You applied \the [tool] to [target]'s ribcage."
+		user.visible_message(msg, self_msg)
+
+		target.op_stage.ribcage = 0
+
+//////////////////////////////////////////////////////////////////
+//					ALIEN EMBRYO SURGERY						//
+//////////////////////////////////////////////////////////////////
+/datum/surgery_step/ribcage/remove_embryo
+	required_tool = /obj/item/weapon/hemostat
+
+	min_duration = 80
+	max_duration = 100
+
+	can_use(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
+		var/embryo = 0
+		for(var/datum/disease/alien_embryo/A in target.viruses)
+			embryo = 1
+			break
+		return ..() && embryo && target.op_stage.ribcage == 2
+
+	begin_step(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
+		var/msg = "[user] starts to pull something out from [target]'s ribcage with \the [tool]."
+		var/self_msg = "You start to pull something out from [target]'s ribcage with \the [tool]."
+		user.visible_message(msg, self_msg)
+		target.custom_pain("Something hurts horribly in your chest!",1)
+
+	end_step(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
+		user.visible_message("\red [user] rips the larva out of [target]'s ribcage!",
+							 "You rip the larva out of [target]'s ribcage!")
+
+		var/mob/living/carbon/alien/larva/stupid = new(target.loc)
+		stupid.death(0)
+
+		for(var/datum/disease/alien_embryo in target.viruses)
+			alien_embryo.cure()
+
+		var/datum/organ/external/affected = target.get_organ(target_zone)
+		if (ishuman(user))
+			user:bloody_hands(target, 0)
+			spread_germs_to_organ(affected, user)
+			if (prob(60))
+				user:bloody_body(target)
+
+
+//////////////////////////////////////////////////////////////////
+//					LUNG SURGERY								//
+//////////////////////////////////////////////////////////////////
+/datum/surgery_step/ribcage/fix_lungs
+	required_tool = /obj/item/weapon/scalpel
+	allowed_tools = list(/obj/item/weapon/shard, /obj/item/weapon/kitchenknife)
+
+	min_duration = 70
+	max_duration = 90
+
+	can_use(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
+		return ..() && target.is_lung_ruptured() && target.op_stage.ribcage == 2
+
+	begin_step(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
+		user.visible_message("[user] starts mending the rupture in [target]'s lungs with \the [tool].", \
+		"You start mending the rupture in [target]'s lungs with \the [tool]." )
+		target.custom_pain("The pain in your chest is living hell!",1)
+
+	end_step(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
+		var/datum/organ/external/chest/affected = target.get_organ("chest")
+		user.visible_message("\blue [user] mends the rupture in [target]'s lungs with \the [tool].", \
+		"\blue You mend the rupture in [target]'s lungs with \the [tool]." )
+		affected.ruptured_lungs = 0
+		if (ishuman(user) && prob(80))
+			user:bloody_hands(target, 0)
+			spread_germs_to_organ(affected, user)
+
+	fail_step(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
+		var/datum/organ/external/chest/affected = target.get_organ("chest")
+		user.visible_message("\red [user]'s hand slips, slicing an artery inside [target]'s chest with \the [tool]!", \
+		"\red Your hand slips, slicing an artery inside [target]'s chest with \the [tool]!")
+		affected.createwound(CUT, 20)
+		if (ishuman(user))
+			user:bloody_hands(target, 0)
+			user:bloody_body(target)
\ No newline at end of file
diff --git a/code/modules/surgery/robolimbs.dm b/code/modules/surgery/robolimbs.dm
new file mode 100644
index 00000000000..f1cce977bdf
--- /dev/null
+++ b/code/modules/surgery/robolimbs.dm
@@ -0,0 +1,146 @@
+//Procedures in this file: Robotic limbs attachment
+//////////////////////////////////////////////////////////////////
+//						LIMB SURGERY							//
+//////////////////////////////////////////////////////////////////
+
+/datum/surgery_step/limb/
+	can_use(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
+		if (!hasorgans(target))
+			return 0
+		var/datum/organ/external/affected = target.get_organ(target_zone)
+		if (!affected)
+			return 0
+		if (!(affected.status & ORGAN_DESTROYED))
+			return 0
+		if (affected.parent)
+			if (affected.parent.status & ORGAN_DESTROYED)
+				return 0
+		return 1
+
+
+/datum/surgery_step/limb/cut
+	required_tool = /obj/item/weapon/scalpel
+	allowed_tools = list(/obj/item/weapon/shard, /obj/item/weapon/kitchenknife)
+
+	min_duration = 80
+	max_duration = 100
+
+	begin_step(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
+		var/datum/organ/external/affected = target.get_organ(target_zone)
+		user.visible_message("[user] starts cutting away flesh where [target]'s [affected.display_name] used to be with \the [tool].", \
+		"You start cutting away flesh where [target]'s [affected.display_name] used to be with \the [tool].")
+
+	end_step(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
+		var/datum/organ/external/affected = target.get_organ(target_zone)
+		user.visible_message("\blue [user] cuts away flesh where [target]'s [affected.display_name] used to be with \the [tool].",	\
+		"\blue You cut away flesh where [target]'s [affected.display_name] used to be with \the [tool].")
+		affected.status |= ORGAN_CUT_AWAY
+
+	fail_step(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
+		var/datum/organ/external/affected = target.get_organ(target_zone)
+		if (affected.parent)
+			affected = affected.parent
+			user.visible_message("\red [user]'s hand slips, cutting [target]'s [affected.display_name] open!", \
+			"\red Your hand slips,  cutting [target]'s [affected.display_name] open!")
+			affected.createwound(CUT, 10)
+
+
+/datum/surgery_step/limb/mend
+	required_tool = /obj/item/weapon/retractor
+	allowed_tools = list(/obj/item/weapon/kitchen/utensil/fork)
+
+	min_duration = 80
+	max_duration = 100
+
+	can_use(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
+		var/datum/organ/external/affected = target.get_organ(target_zone)
+		return ..() && affected.status & ORGAN_CUT_AWAY
+
+	begin_step(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
+		var/datum/organ/external/affected = target.get_organ(target_zone)
+		user.visible_message("[user] is beginning reposition flesh and nerve endings where where [target]'s [affected.display_name] used to be with [tool].", \
+		"You start repositioning flesh and nerve endings where where [target]'s [affected.display_name] used to be with [tool].")
+
+	end_step(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
+		var/datum/organ/external/affected = target.get_organ(target_zone)
+		user.visible_message("\blue [user] has finished repositioning flesh and nerve endings where [target]'s [affected.display_name] used to be with [tool].",	\
+		"\blue You have finished repositioning flesh and nerve endings where [target]'s [affected.display_name] used to be with [tool].")
+		affected.open = 3
+
+	fail_step(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
+		var/datum/organ/external/affected = target.get_organ(target_zone)
+		if (affected.parent)
+			affected = affected.parent
+			user.visible_message("\red [user]'s hand slips, tearing flesh on [target]'s [affected.display_name]!", \
+			"\red Your hand slips, tearing flesh on [target]'s [affected.display_name]!")
+			target.apply_damage(10, BRUTE, affected)
+
+
+/datum/surgery_step/limb/prepare
+	required_tool = /obj/item/weapon/cautery
+	allowed_tools = list(/obj/item/weapon/weldingtool, /obj/item/clothing/mask/cigarette, /obj/item/weapon/lighter)
+
+	min_duration = 60
+	max_duration = 70
+
+	can_use(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
+		var/datum/organ/external/affected = target.get_organ(target_zone)
+		return ..() && affected.open == 3
+
+	begin_step(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
+		var/datum/organ/external/affected = target.get_organ(target_zone)
+		user.visible_message("[user] starts adjusting area around [target]'s [affected.display_name] with \the [tool].", \
+		"You start adjusting area around [target]'s [affected.display_name] with \the [tool]..")
+
+	end_step(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
+		var/datum/organ/external/affected = target.get_organ(target_zone)
+		user.visible_message("\blue [user] has finished adjusting the area around [target]'s [affected.display_name] with \the [tool].",	\
+		"\blue You have finished adjusting the area around [target]'s [affected.display_name] with \the [tool].")
+		affected.status |= ORGAN_ATTACHABLE
+		affected.amputated = 1
+		affected.setAmputatedTree()
+		affected.open = 0
+
+	fail_step(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
+		var/datum/organ/external/affected = target.get_organ(target_zone)
+		if (affected.parent)
+			affected = affected.parent
+			user.visible_message("\red [user]'s hand slips, searing [target]'s [affected.display_name]!", \
+			"\red Your hand slips, searing [target]'s [affected.display_name]!")
+			target.apply_damage(10, BURN, affected)
+
+
+/datum/surgery_step/limb/attach
+	required_tool = /obj/item/robot_parts
+
+	min_duration = 80
+	max_duration = 100
+
+	can_use(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
+		var/obj/item/robot_parts/p = tool
+		if (p.part)
+			if (!(target_zone in p.part))
+				return 0
+		var/datum/organ/external/affected = target.get_organ(target_zone)
+		return ..() && affected.status & ORGAN_ATTACHABLE
+
+	begin_step(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
+		var/datum/organ/external/affected = target.get_organ(target_zone)
+		user.visible_message("[user] starts attaching [tool] where [target]'s [affected.display_name] used to be.", \
+		"You start attaching [tool] where [target]'s [affected.display_name] used to be.")
+
+	end_step(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
+		var/datum/organ/external/affected = target.get_organ(target_zone)
+		user.visible_message("\blue [user] has attached [tool] where [target]'s [affected.display_name] used to be.",	\
+		"\blue You have attached [tool] where [target]'s [affected.display_name] used to be.")
+		affected.robotize()
+		target.update_body()
+		target.updatehealth()
+		target.UpdateDamageIcon()
+		del(tool)
+
+	fail_step(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
+		var/datum/organ/external/affected = target.get_organ(target_zone)
+		user.visible_message("\red [user]'s hand slips, damaging connectors on [target]'s [affected.display_name]!", \
+		"\red Your hand slips, damaging connectors on [target]'s [affected.display_name]!")
+		target.apply_damage(10, BRUTE, affected)
diff --git a/code/modules/surgery/surgery.dm b/code/modules/surgery/surgery.dm
new file mode 100644
index 00000000000..6228720a5be
--- /dev/null
+++ b/code/modules/surgery/surgery.dm
@@ -0,0 +1,74 @@
+/* SURGERY STEPS */
+
+/datum/surgery_step
+	// type path referencing the required tool for this step
+	var/required_tool = null
+
+	// type path referencing tools that can be used as substitude for this step
+	var/list/allowed_tools = null
+
+	// When multiple steps can be applied with the current tool etc., choose the one with higher priority
+
+	// checks whether this step can be applied with the given user and target
+	proc/can_use(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
+		return 0
+
+	// does stuff to begin the step, usually just printing messages
+	proc/begin_step(user, mob/living/carbon/human/target, target_zone, obj/item/tool)
+		return
+
+	// does stuff to end the step, which is normally print a message + do whatever this step changes
+	proc/end_step(user, mob/living/carbon/human/target, target_zone, obj/item/tool)
+		return
+
+	// stuff that happens when the step fails
+	proc/fail_step(user, mob/living/carbon/human/target, target_zone, obj/item/tool)
+		return null
+
+	// duration of the step
+	var/min_duration = 0
+	var/max_duration = 0
+
+	// evil infection stuff that will make everyone hate me
+	var/can_infect = 0
+
+	proc/isright(obj/item/tool)			//is it is a required surgical tool for this step
+		return (istype(tool,required_tool))
+
+	proc/isacceptable(obj/item/tool)	//is it is an accepted replacement tool for this step
+		if (allowed_tools)
+			for (var/T in allowed_tools)
+				if (istype(tool,T))
+					return 1
+		return 0
+
+proc/spread_germs_to_organ(datum/organ/external/E, mob/living/carbon/human/user)
+	if(!istype(user) || !istype(E)) return
+
+	var/germ_level = user.germ_level
+	if(user.gloves)
+		germ_level = user.gloves.germ_level
+
+	E.germ_level = max(germ_level,E.germ_level) //as funny as scrubbing microbes out with clean gloves is - no.
+
+proc/do_surgery(mob/living/M, mob/living/user, obj/item/tool)
+	if(!istype(M,/mob/living/carbon))
+		return 0
+	if (user.a_intent == "harm")	//check for Hippocratic Oath
+		return 0
+	for(var/datum/surgery_step/S in surgery_steps)
+		if( S.isright(tool) || S.isacceptable(tool) && \
+		S.can_use(user, M, user.zone_sel.selecting, tool))	 	//check if tool is right or close enough and if this step is possible
+			S.begin_step(user, M, user.zone_sel.selecting, tool)			//start on it
+			if(do_mob(user, M, rand(S.min_duration, S.max_duration)))	//if user did nto move or changed hands
+				S.end_step(user, M, user.zone_sel.selecting, tool)		//finish successfully
+			else														//or
+				S.fail_step(user, M, user.zone_sel.selecting, tool)		//malpractice~
+			return	1	  												//don't want to do weapony things after surgery
+	return 0
+
+/datum/surgery_status/
+	var/eyes	=	0
+	var/face	=	0
+	var/appendix =	0
+	var/ribcage =	0
\ No newline at end of file