diff --git a/code/__DEFINES/bodyparts.dm b/code/__DEFINES/bodyparts.dm
index aaf7b1f06993..a26178c3f762 100644
--- a/code/__DEFINES/bodyparts.dm
+++ b/code/__DEFINES/bodyparts.dm
@@ -53,11 +53,6 @@
 #define HATCH_UNSCREWED 2
 #define HATCH_OPENED 3
 
-#define STOCK_BP_FLAGS_CHEST (BP_HAS_BLOOD | BP_HAS_BONES | BP_HAS_ARTERY | BP_CAN_BE_DISLOCATED)
-#define STOCK_BP_FLAGS_HEAD (BP_HAS_BLOOD | BP_HAS_BONES | BP_HAS_ARTERY | BP_CAN_BE_DISLOCATED)
-#define STOCK_BP_FLAGS_ARMS (BP_IS_GRABBY_LIMB | BP_HAS_BLOOD | BP_HAS_BONES | BP_HAS_TENDON | BP_HAS_ARTERY | BP_CAN_BE_DISLOCATED)
-#define STOCK_BP_FLAGS_LEGS (BP_IS_MOVEMENT_LIMB | BP_HAS_BLOOD | BP_HAS_BONES | BP_HAS_TENDON | BP_HAS_ARTERY| BP_CAN_BE_DISLOCATED)
-
 //check_bones() return values
 #define CHECKBONES_NONE (1<<0)
 #define CHECKBONES_OK (1<<1)
diff --git a/code/modules/surgery/bodyparts/head.dm b/code/modules/surgery/bodyparts/head.dm
index bd9758e5c7f1..4d7c50fd7b1e 100644
--- a/code/modules/surgery/bodyparts/head.dm
+++ b/code/modules/surgery/bodyparts/head.dm
@@ -25,7 +25,7 @@
 	unarmed_stun_threshold = 4
 	bodypart_trait_source = HEAD_TRAIT
 
-	bodypart_flags = STOCK_BP_FLAGS_HEAD
+	bodypart_flags = (BP_HAS_BLOOD | BP_HAS_BONES | BP_HAS_ARTERY | BP_CAN_BE_DISLOCATED)
 
 	amputation_point = "neck"
 	encased = "skull"
diff --git a/code/modules/surgery/bodyparts/parts.dm b/code/modules/surgery/bodyparts/parts.dm
index 04be40662950..c570c5061b59 100644
--- a/code/modules/surgery/bodyparts/parts.dm
+++ b/code/modules/surgery/bodyparts/parts.dm
@@ -20,7 +20,7 @@
 
 	minimum_break_damage = 35
 
-	bodypart_flags = STOCK_BP_FLAGS_CHEST
+	bodypart_flags = (BP_HAS_BLOOD | BP_HAS_BONES | BP_HAS_ARTERY | BP_CAN_BE_DISLOCATED)
 
 	///The bodytype(s) allowed to attach to this chest.
 	var/acceptable_bodytype = BODYTYPE_HUMANOID
@@ -80,7 +80,7 @@
 	unarmed_stun_threshold = 10
 	body_zone = BODY_ZONE_L_ARM
 
-	bodypart_flags = STOCK_BP_FLAGS_ARMS
+	bodypart_flags = (BP_IS_GRABBY_LIMB | BP_HAS_BLOOD | BP_HAS_BONES | BP_HAS_TENDON | BP_HAS_ARTERY | BP_CAN_BE_DISLOCATED)
 
 	artery_name = "basilic vein"
 	tendon_name = "palmaris longus tendon"
@@ -272,7 +272,7 @@
 	unarmed_damage_high = 12
 	unarmed_stun_threshold = 10
 
-	bodypart_flags = STOCK_BP_FLAGS_LEGS
+	bodypart_flags = (BP_IS_MOVEMENT_LIMB | BP_HAS_BLOOD | BP_HAS_BONES | BP_HAS_TENDON | BP_HAS_ARTERY| BP_CAN_BE_DISLOCATED)
 
 	artery_name = "femoral artery"
 	tendon_name = "cruciate ligament"
diff --git a/code/modules/surgery/bodyparts/robot_bodyparts.dm b/code/modules/surgery/bodyparts/robot_bodyparts.dm
index 90a2f1066977..ff1d0b195e06 100644
--- a/code/modules/surgery/bodyparts/robot_bodyparts.dm
+++ b/code/modules/surgery/bodyparts/robot_bodyparts.dm
@@ -27,7 +27,7 @@
 
 	armor = list(BLUNT = 5, PUNCTURE = 5, SLASH = 0, LASER = 5, ENERGY = 0, BOMB = 0, BIO = 100, FIRE = 5, ACID = 10)
 
-	bodypart_flags = BP_NO_PAIN | STOCK_BP_FLAGS_ARMS & ~(BP_HAS_BLOOD|BP_HAS_BONES|BP_HAS_TENDON|BP_HAS_ARTERY)
+	bodypart_flags = (parent_type::bodypart_flags | BP_NO_PAIN) & ~(BP_HAS_BLOOD|BP_HAS_BONES|BP_HAS_TENDON|BP_HAS_ARTERY)
 
 	light_brute_msg = ROBOTIC_LIGHT_BRUTE_MSG
 	medium_brute_msg = ROBOTIC_MEDIUM_BRUTE_MSG
@@ -54,7 +54,7 @@
 
 	armor = list(BLUNT = 5, PUNCTURE = 5, SLASH = 0, LASER = 5, ENERGY = 0, BOMB = 0, BIO = 100, FIRE = 5, ACID = 10)
 
-	bodypart_flags = BP_NO_PAIN | STOCK_BP_FLAGS_ARMS & ~(BP_HAS_BLOOD|BP_HAS_BONES|BP_HAS_TENDON|BP_HAS_ARTERY)
+	bodypart_flags = (parent_type::bodypart_flags | BP_NO_PAIN) & ~(BP_HAS_BLOOD|BP_HAS_BONES|BP_HAS_TENDON|BP_HAS_ARTERY)
 
 	light_brute_msg = ROBOTIC_LIGHT_BRUTE_MSG
 	medium_brute_msg = ROBOTIC_MEDIUM_BRUTE_MSG
@@ -81,7 +81,7 @@
 
 	armor = list(BLUNT = 5, PUNCTURE = 5, SLASH = 0, LASER = 5, ENERGY = 0, BOMB = 0, BIO = 100, FIRE = 5, ACID = 10)
 
-	bodypart_flags = BP_NO_PAIN | STOCK_BP_FLAGS_LEGS & ~(BP_HAS_BLOOD|BP_HAS_BONES|BP_HAS_TENDON|BP_HAS_ARTERY)
+	bodypart_flags = (parent_type::bodypart_flags | BP_NO_PAIN) & ~(BP_HAS_BLOOD|BP_HAS_BONES|BP_HAS_TENDON|BP_HAS_ARTERY)
 
 	light_brute_msg = ROBOTIC_LIGHT_BRUTE_MSG
 	medium_brute_msg = ROBOTIC_MEDIUM_BRUTE_MSG
@@ -108,7 +108,7 @@
 
 	armor = list(BLUNT = 5, PUNCTURE = 5, SLASH = 0, LASER = 5, ENERGY = 0, BOMB = 0, BIO = 100, FIRE = 5, ACID = 10)
 
-	bodypart_flags = BP_NO_PAIN | STOCK_BP_FLAGS_LEGS & ~(BP_HAS_BLOOD|BP_HAS_BONES|BP_HAS_TENDON|BP_HAS_ARTERY)
+	bodypart_flags = (parent_type::bodypart_flags | BP_NO_PAIN) & ~(BP_HAS_BLOOD|BP_HAS_BONES|BP_HAS_TENDON|BP_HAS_ARTERY)
 
 	light_brute_msg = ROBOTIC_LIGHT_BRUTE_MSG
 	medium_brute_msg = ROBOTIC_MEDIUM_BRUTE_MSG
@@ -134,7 +134,7 @@
 
 	armor = list(BLUNT = 5, PUNCTURE = 5, SLASH = 0, LASER = 5, ENERGY = 0, BOMB = 0, BIO = 100, FIRE = 5, ACID = 10)
 
-	bodypart_flags = BP_NO_PAIN | STOCK_BP_FLAGS_CHEST & ~(BP_HAS_BLOOD|BP_HAS_BONES|BP_HAS_TENDON|BP_HAS_ARTERY)
+	bodypart_flags = (parent_type::bodypart_flags | BP_NO_PAIN) & ~(BP_HAS_BLOOD|BP_HAS_BONES|BP_HAS_TENDON|BP_HAS_ARTERY)
 
 	light_brute_msg = ROBOTIC_LIGHT_BRUTE_MSG
 	medium_brute_msg = ROBOTIC_MEDIUM_BRUTE_MSG
@@ -245,7 +245,7 @@
 
 	armor = list(BLUNT = 5, PUNCTURE = 5, SLASH = 0, LASER = 5, ENERGY = 0, BOMB = 0, BIO = 100, FIRE = 5, ACID = 10)
 
-	bodypart_flags = BP_NO_PAIN | STOCK_BP_FLAGS_HEAD & ~(BP_HAS_BLOOD|BP_HAS_BONES|BP_HAS_TENDON|BP_HAS_ARTERY)
+	bodypart_flags = (parent_type::bodypart_flags | BP_NO_PAIN) & ~(BP_HAS_BLOOD|BP_HAS_BONES|BP_HAS_TENDON|BP_HAS_ARTERY)
 
 	light_brute_msg = ROBOTIC_LIGHT_BRUTE_MSG
 	medium_brute_msg = ROBOTIC_MEDIUM_BRUTE_MSG
diff --git a/code/modules/surgery/bodyparts/species_parts/misc_bodyparts.dm b/code/modules/surgery/bodyparts/species_parts/misc_bodyparts.dm
index 393463bb4ac3..f314de247566 100644
--- a/code/modules/surgery/bodyparts/species_parts/misc_bodyparts.dm
+++ b/code/modules/surgery/bodyparts/species_parts/misc_bodyparts.dm
@@ -33,40 +33,40 @@
 	is_dimorphic = FALSE
 	should_draw_greyscale = FALSE
 
-	bodypart_flags = STOCK_BP_FLAGS_HEAD & ~BP_HAS_BLOOD
+	bodypart_flags = parent_type::bodypart_flags & ~BP_HAS_BLOOD
 
 /obj/item/bodypart/chest/abductor
 	limb_id = SPECIES_ABDUCTOR
 	is_dimorphic = FALSE
 	should_draw_greyscale = FALSE
 
-	bodypart_flags = STOCK_BP_FLAGS_CHEST & ~BP_HAS_BLOOD
+	bodypart_flags = parent_type::bodypart_flags & ~BP_HAS_BLOOD
 
 /obj/item/bodypart/arm/left/abductor
 	limb_id = SPECIES_ABDUCTOR
 	should_draw_greyscale = FALSE
 	bodypart_traits = list(TRAIT_CHUNKYFINGERS)
 
-	bodypart_flags = STOCK_BP_FLAGS_ARMS & ~BP_HAS_BLOOD
+	bodypart_flags = parent_type::bodypart_flags & ~BP_HAS_BLOOD
 
 /obj/item/bodypart/arm/right/abductor
 	limb_id = SPECIES_ABDUCTOR
 	should_draw_greyscale = FALSE
 	bodypart_traits = list(TRAIT_CHUNKYFINGERS)
 
-	bodypart_flags = STOCK_BP_FLAGS_ARMS & ~BP_HAS_BLOOD
+	bodypart_flags = parent_type::bodypart_flags & ~BP_HAS_BLOOD
 
 /obj/item/bodypart/leg/left/abductor
 	limb_id = SPECIES_ABDUCTOR
 	should_draw_greyscale = FALSE
 
-	bodypart_flags = STOCK_BP_FLAGS_LEGS & ~BP_HAS_BLOOD
+	bodypart_flags = parent_type::bodypart_flags & ~BP_HAS_BLOOD
 
 /obj/item/bodypart/leg/right/abductor
 	limb_id = SPECIES_ABDUCTOR
 	should_draw_greyscale = FALSE
 
-	bodypart_flags = STOCK_BP_FLAGS_LEGS & ~BP_HAS_BLOOD
+	bodypart_flags = parent_type::bodypart_flags & ~BP_HAS_BLOOD
 
 ///JELLY
 /obj/item/bodypart/head/jelly
@@ -74,65 +74,65 @@
 	is_dimorphic = TRUE
 	icon_dmg_overlay = null
 
-	bodypart_flags = STOCK_BP_FLAGS_HEAD & ~(BP_HAS_BLOOD|BP_HAS_BONES|BP_HAS_TENDON|BP_HAS_ARTERY)
+	bodypart_flags = parent_type::bodypart_flags & ~(BP_HAS_BLOOD|BP_HAS_BONES|BP_HAS_TENDON|BP_HAS_ARTERY)
 
 /obj/item/bodypart/chest/jelly
 	limb_id = SPECIES_JELLYPERSON
 	is_dimorphic = TRUE
 	icon_dmg_overlay = null
 
-	bodypart_flags = STOCK_BP_FLAGS_CHEST & ~(BP_HAS_BLOOD|BP_HAS_BONES|BP_HAS_TENDON|BP_HAS_ARTERY)
+	bodypart_flags = parent_type::bodypart_flags & ~(BP_HAS_BLOOD|BP_HAS_BONES|BP_HAS_TENDON|BP_HAS_ARTERY)
 
 /obj/item/bodypart/arm/left/jelly
 	limb_id = SPECIES_JELLYPERSON
 	icon_dmg_overlay = null
 
-	bodypart_flags = STOCK_BP_FLAGS_ARMS & ~(BP_HAS_BLOOD|BP_HAS_BONES|BP_HAS_TENDON|BP_HAS_ARTERY)
+	bodypart_flags = parent_type::bodypart_flags & ~(BP_HAS_BLOOD|BP_HAS_BONES|BP_HAS_TENDON|BP_HAS_ARTERY)
 
 /obj/item/bodypart/arm/right/jelly
 	limb_id = SPECIES_JELLYPERSON
 	icon_dmg_overlay = null
 
-	bodypart_flags = STOCK_BP_FLAGS_ARMS & ~(BP_HAS_BLOOD|BP_HAS_BONES|BP_HAS_TENDON|BP_HAS_ARTERY)
+	bodypart_flags = parent_type::bodypart_flags & ~(BP_HAS_BLOOD|BP_HAS_BONES|BP_HAS_TENDON|BP_HAS_ARTERY)
 
 /obj/item/bodypart/leg/left/jelly
 	limb_id = SPECIES_JELLYPERSON
 	icon_dmg_overlay = null
 
-	bodypart_flags = STOCK_BP_FLAGS_LEGS & ~(BP_HAS_BLOOD|BP_HAS_BONES|BP_HAS_TENDON|BP_HAS_ARTERY)
+	bodypart_flags = parent_type::bodypart_flags & ~(BP_HAS_BLOOD|BP_HAS_BONES|BP_HAS_TENDON|BP_HAS_ARTERY)
 
 /obj/item/bodypart/leg/right/jelly
 	limb_id = SPECIES_JELLYPERSON
 	icon_dmg_overlay = null
 
-	bodypart_flags = STOCK_BP_FLAGS_LEGS & ~(BP_HAS_BLOOD|BP_HAS_BONES|BP_HAS_TENDON|BP_HAS_ARTERY)
+	bodypart_flags = parent_type::bodypart_flags & ~(BP_HAS_BLOOD|BP_HAS_BONES|BP_HAS_TENDON|BP_HAS_ARTERY)
 
 ///SLIME
 /obj/item/bodypart/head/slime
 	limb_id = SPECIES_SLIMEPERSON
 	is_dimorphic = FALSE
-	bodypart_flags = STOCK_BP_FLAGS_HEAD & ~(BP_HAS_BLOOD|BP_HAS_BONES|BP_HAS_TENDON|BP_HAS_ARTERY)
+	bodypart_flags = parent_type::bodypart_flags & ~(BP_HAS_BLOOD|BP_HAS_BONES|BP_HAS_TENDON|BP_HAS_ARTERY)
 
 /obj/item/bodypart/chest/slime
 	limb_id = SPECIES_SLIMEPERSON
 	is_dimorphic = TRUE
-	bodypart_flags = STOCK_BP_FLAGS_CHEST & ~(BP_HAS_BLOOD|BP_HAS_BONES|BP_HAS_TENDON|BP_HAS_ARTERY)
+	bodypart_flags = parent_type::bodypart_flags & ~(BP_HAS_BLOOD|BP_HAS_BONES|BP_HAS_TENDON|BP_HAS_ARTERY)
 
 /obj/item/bodypart/arm/left/slime
 	limb_id = SPECIES_SLIMEPERSON
-	bodypart_flags = STOCK_BP_FLAGS_ARMS & ~(BP_HAS_BLOOD|BP_HAS_BONES|BP_HAS_TENDON|BP_HAS_ARTERY)
+	bodypart_flags = parent_type::bodypart_flags & ~(BP_HAS_BLOOD|BP_HAS_BONES|BP_HAS_TENDON|BP_HAS_ARTERY)
 
 /obj/item/bodypart/arm/right/slime
 	limb_id = SPECIES_SLIMEPERSON
-	bodypart_flags = STOCK_BP_FLAGS_ARMS & ~(BP_HAS_BLOOD|BP_HAS_BONES|BP_HAS_TENDON|BP_HAS_ARTERY)
+	bodypart_flags = parent_type::bodypart_flags & ~(BP_HAS_BLOOD|BP_HAS_BONES|BP_HAS_TENDON|BP_HAS_ARTERY)
 
 /obj/item/bodypart/leg/left/slime
 	limb_id = SPECIES_SLIMEPERSON
-	bodypart_flags = STOCK_BP_FLAGS_LEGS & ~(BP_HAS_BLOOD|BP_HAS_BONES|BP_HAS_TENDON|BP_HAS_ARTERY)
+	bodypart_flags = parent_type::bodypart_flags & ~(BP_HAS_BLOOD|BP_HAS_BONES|BP_HAS_TENDON|BP_HAS_ARTERY)
 
 /obj/item/bodypart/leg/right/slime
 	limb_id = SPECIES_SLIMEPERSON
-	bodypart_flags = STOCK_BP_FLAGS_LEGS & ~(BP_HAS_BLOOD|BP_HAS_BONES|BP_HAS_TENDON|BP_HAS_ARTERY)
+	bodypart_flags = parent_type::bodypart_flags & ~(BP_HAS_BLOOD|BP_HAS_BONES|BP_HAS_TENDON|BP_HAS_ARTERY)
 
 ///LUMINESCENT
 /obj/item/bodypart/head/luminescent
@@ -278,7 +278,7 @@
 	should_draw_greyscale = FALSE
 	icon_dmg_overlay = null
 
-	bodypart_flags = STOCK_BP_FLAGS_HEAD & ~(BP_HAS_BLOOD)
+	bodypart_flags = parent_type::bodypart_flags & ~(BP_HAS_BLOOD)
 
 /obj/item/bodypart/chest/skeleton
 	limb_id = SPECIES_SKELETON
@@ -286,35 +286,35 @@
 	should_draw_greyscale = FALSE
 	icon_dmg_overlay = null
 
-	bodypart_flags = STOCK_BP_FLAGS_CHEST & ~(BP_HAS_BLOOD)
+	bodypart_flags = parent_type::bodypart_flags & ~(BP_HAS_BLOOD)
 
 /obj/item/bodypart/arm/left/skeleton
 	limb_id = SPECIES_SKELETON
 	should_draw_greyscale = FALSE
 	icon_dmg_overlay = null
 
-	bodypart_flags = STOCK_BP_FLAGS_ARMS & ~(BP_HAS_BLOOD)
+	bodypart_flags = parent_type::bodypart_flags & ~(BP_HAS_BLOOD)
 
 /obj/item/bodypart/arm/right/skeleton
 	limb_id = SPECIES_SKELETON
 	should_draw_greyscale = FALSE
 	icon_dmg_overlay = null
 
-	bodypart_flags = STOCK_BP_FLAGS_ARMS & ~(BP_HAS_BLOOD)
+	bodypart_flags = parent_type::bodypart_flags & ~(BP_HAS_BLOOD)
 
 /obj/item/bodypart/leg/left/skeleton
 	limb_id = SPECIES_SKELETON
 	should_draw_greyscale = FALSE
 	icon_dmg_overlay = null
 
-	bodypart_flags = STOCK_BP_FLAGS_LEGS & ~(BP_HAS_BLOOD)
+	bodypart_flags = parent_type::bodypart_flags & ~(BP_HAS_BLOOD)
 
 /obj/item/bodypart/leg/right/skeleton
 	limb_id = SPECIES_SKELETON
 	should_draw_greyscale = FALSE
 	icon_dmg_overlay = null
 
-	bodypart_flags = STOCK_BP_FLAGS_LEGS & ~(BP_HAS_BLOOD)
+	bodypart_flags = parent_type::bodypart_flags & ~(BP_HAS_BLOOD)
 
 ///MUSHROOM
 /obj/item/bodypart/head/mushroom
diff --git a/code/modules/surgery/bodyparts/species_parts/plasmaman_bodyparts.dm b/code/modules/surgery/bodyparts/species_parts/plasmaman_bodyparts.dm
index 9f6895140369..b57b8bd853a9 100644
--- a/code/modules/surgery/bodyparts/species_parts/plasmaman_bodyparts.dm
+++ b/code/modules/surgery/bodyparts/species_parts/plasmaman_bodyparts.dm
@@ -7,7 +7,7 @@
 	should_draw_greyscale = FALSE
 	icon_dmg_overlay = null
 
-	bodypart_flags = STOCK_BP_FLAGS_HEAD & ~(BP_HAS_BLOOD)
+	bodypart_flags = parent_type::bodypart_flags & ~(BP_HAS_BLOOD)
 
 /obj/item/bodypart/chest/plasmaman
 	icon = 'icons/mob/species/plasmaman/bodyparts.dmi'
@@ -18,7 +18,7 @@
 	should_draw_greyscale = FALSE
 	icon_dmg_overlay = null
 
-	bodypart_flags = STOCK_BP_FLAGS_CHEST & ~(BP_HAS_BLOOD)
+	bodypart_flags = parent_type::bodypart_flags & ~(BP_HAS_BLOOD)
 
 /obj/item/bodypart/arm/left/plasmaman
 	icon = 'icons/mob/species/plasmaman/bodyparts.dmi'
@@ -28,7 +28,7 @@
 	should_draw_greyscale = FALSE
 	icon_dmg_overlay = null
 
-	bodypart_flags = STOCK_BP_FLAGS_ARMS & ~(BP_HAS_BLOOD)
+	bodypart_flags = parent_type::bodypart_flags & ~(BP_HAS_BLOOD)
 
 /obj/item/bodypart/arm/right/plasmaman
 	icon = 'icons/mob/species/plasmaman/bodyparts.dmi'
@@ -38,7 +38,7 @@
 	should_draw_greyscale = FALSE
 	icon_dmg_overlay = null
 
-	bodypart_flags = STOCK_BP_FLAGS_ARMS & ~(BP_HAS_BLOOD)
+	bodypart_flags = parent_type::bodypart_flags & ~(BP_HAS_BLOOD)
 
 /obj/item/bodypart/leg/left/plasmaman
 	icon = 'icons/mob/species/plasmaman/bodyparts.dmi'
@@ -47,7 +47,7 @@
 	limb_id = SPECIES_PLASMAMAN
 	should_draw_greyscale = FALSE
 	icon_dmg_overlay = null
-	bodypart_flags = STOCK_BP_FLAGS_LEGS & ~(BP_HAS_BLOOD)
+	bodypart_flags = parent_type::bodypart_flags & ~(BP_HAS_BLOOD)
 
 /obj/item/bodypart/leg/right/plasmaman
 	icon = 'icons/mob/species/plasmaman/bodyparts.dmi'
@@ -56,4 +56,4 @@
 	limb_id = SPECIES_PLASMAMAN
 	should_draw_greyscale = FALSE
 	icon_dmg_overlay = null
-	bodypart_flags = STOCK_BP_FLAGS_LEGS & ~(BP_HAS_BLOOD)
+	bodypart_flags = parent_type::bodypart_flags & ~(BP_HAS_BLOOD)