ICD-10-CM Book 2024 Edition

Chapters  /  Chapter 20  /  W20-W49

Exposure to inanimate mechanical forces (W20-W49)

Excludes1: assault (X92-Y09)
contact or collision with animals or persons (W50-W64)
exposure to inanimate mechanical forces involving military or war operations (Y36.-, Y37.-)
intentional self-harm (X71-X83)
W20 Struck by thrown, projected or falling object
CodeFirst any associated:
cataclysm (X34-X39)
lightning strike (T75.00)
Excludes1 falling object in machinery accident (W24, W28-W31)
falling object in transport accident (V01-V99)
object set in motion by explosion (W35-W40)
object set in motion by firearm (W32-W34)
struck by thrown sports equipment (W21.-)
char7Note The appropriate 7th character is to be added to each code from category W20
char7Def A: initial encounter
D: subsequent encounter
S: sequela
W20.0 Struck by falling object in cave-in
Excludes2 asphyxiation due to cave-in (T71.21)
W20.1 Struck by object due to collapse of building
Excludes1 struck by object due to collapse of burning building (X00.2, X02.2)
W20.8 Other cause of strike by thrown, projected or falling object
Excludes1 struck by thrown sports equipment (W21.-)
W21 Striking against or struck by sports equipment
Excludes1 assault with sports equipment (Y08.0-)
striking against or struck by sports equipment with subsequent fall (W18.01)
char7Note The appropriate 7th character is to be added to each code from category W21
char7Def A: initial encounter
D: subsequent encounter
S: sequela
W21.0 Struck by hit or thrown ball
W21.00 Struck by hit or thrown ball, unspecified type
W21.01 Struck by football
W21.02 Struck by soccer ball
W21.03 Struck by baseball
W21.04 Struck by golf ball
W21.05 Struck by basketball
W21.06 Struck by volleyball
W21.07 Struck by softball
W21.09 Struck by other hit or thrown ball
W21.1 Struck by bat, racquet or club
W21.11 Struck by baseball bat
W21.12 Struck by tennis racquet
W21.13 Struck by golf club
W21.19 Struck by other bat, racquet or club
W21.2 Struck by hockey stick or puck
W21.21 Struck by hockey stick
W21.210 Struck by ice hockey stick
W21.211 Struck by field hockey stick
W21.22 Struck by hockey puck
W21.220 Struck by ice hockey puck
W21.221 Struck by field hockey puck
W21.3 Struck by sports foot wear
W21.31 Struck by shoe cleats
Stepped on by shoe cleats
W21.32 Struck by skate blades
Skated over by skate blades
W21.39 Struck by other sports foot wear
W21.4 Striking against diving board
UseAdditionalCode code for subsequent falling into water, if applicable (W16.-)
W21.8 Striking against or struck by other sports equipment
W21.81 Striking against or struck by football helmet
W21.89 Striking against or struck by other sports equipment
W21.9 Striking against or struck by unspecified sports equipment
W22 Striking against or struck by other objects
Excludes1 striking against or struck by object with subsequent fall (W18.09)
char7Note The appropriate 7th character is to be added to each code from category W22
char7Def A: initial encounter
D: subsequent encounter
S: sequela
W22.0 Striking against stationary object
Excludes1 striking against stationary sports equipment (W21.8)
W22.01 Walked into wall
W22.02 Walked into lamppost
W22.03 Walked into furniture
W22.04 Striking against wall of swimming pool
W22.041 Striking against wall of swimming pool causing drowning and submersion
Excludes1 drowning and submersion while swimming without striking against wall (W67)
W22.042 Striking against wall of swimming pool causing other injury
W22.09 Striking against other stationary object
W22.1 Striking against or struck by automobile airbag
W22.10 Striking against or struck by unspecified automobile airbag
W22.11 Striking against or struck by driver side automobile airbag
W22.12 Striking against or struck by front passenger side automobile airbag
W22.19 Striking against or struck by other automobile airbag
W22.8 Striking against or struck by other objects
Striking against or struck by object NOS
Excludes1 struck by thrown, projected or falling object (W20.-)
W23 Caught, crushed, jammed or pinched in or between objects
Excludes1 injury caused by cutting or piercing instruments (W25-W27)
injury caused by firearms malfunction (W32.1, W33.1-, W34.1-)
injury caused by lifting and transmission devices (W24.-)
injury caused by machinery (W28-W31)
injury caused by nonpowered hand tools (W27.-)
injury caused by transport vehicle being used as a means of transportation (V01-V99)
injury caused by struck by thrown, projected or falling object (W20.-)
char7Note The appropriate 7th character is to be added to each code from category W23
char7Def A: initial encounter
D: subsequent encounter
S: sequela
W23.0 Caught, crushed, jammed, or pinched between moving objects
W23.1 Caught, crushed, jammed, or pinched between stationary objects
W23.2 Caught, crushed, jammed or pinched between a moving and stationary object
W24 Contact with lifting and transmission devices, not elsewhere classified
Excludes1 transport accidents (V01-V99)
char7Note The appropriate 7th character is to be added to each code from category W24
char7Def A: initial encounter
D: subsequent encounter
S: sequela
W24.0 Contact with lifting devices, not elsewhere classified
Contact with chain hoist
Contact with drive belt
Contact with pulley (block)
W24.1 Contact with transmission devices, not elsewhere classified
Contact with transmission belt or cable
W25 Contact with sharp glass
CodeFirst any associated:
injury due to flying glass from explosion or firearm discharge (W32-W40)
transport accident (V00-V99)
Excludes1 fall on same level due to slipping, tripping and stumbling with subsequent striking against sharp glass (W01.110-)
striking against sharp glass with subsequent fall (W18.02-)
Excludes2 glass embedded in skin (W45.-)
char7Note The appropriate 7th character is to be added to code W25
char7Def A: initial encounter
D: subsequent encounter
S: sequela
W26 Contact with other sharp objects
Excludes2 sharp object(s) embedded in skin (W45.-)
char7Note The appropriate 7th character is to be added to each code from category W26
char7Def A: initial encounter
D: subsequent encounter
S: sequela
W26.0 Contact with knife
Excludes1 contact with electric knife (W29.1)
W26.1 Contact with sword or dagger
W26.2 Contact with edge of stiff paper
Paper cut
W26.8 Contact with other sharp object(s), not elsewhere classified
Contact with tin can lid
W26.9 Contact with unspecified sharp object(s)
W27 Contact with nonpowered hand tool
char7Note The appropriate 7th character is to be added to each code from category W27
char7Def A: initial encounter
D: subsequent encounter
S: sequela
W27.0 Contact with workbench tool
Contact with auger
Contact with axe
Contact with chisel
Contact with handsaw
Contact with screwdriver
W27.1 Contact with garden tool
Contact with hoe
Contact with nonpowered lawn mower
Contact with pitchfork
Contact with rake
W27.2 Contact with scissors
W27.3 Contact with needle (sewing)
Excludes1 contact with hypodermic needle (W46.-)
W27.4 Contact with kitchen utensil
Contact with fork
Contact with ice-pick
Contact with can-opener NOS
W27.5 Contact with paper-cutter
W27.8 Contact with other nonpowered hand tool
Contact with nonpowered sewing machine
Contact with shovel
W28 Contact with powered lawn mower
Powered lawn mower (commercial) (residential)
Excludes1 contact with nonpowered lawn mower (W27.1)
Excludes2 exposure to electric current (W86.-)
char7Note The appropriate 7th character is to be added to code W28
char7Def A: initial encounter
D: subsequent encounter
S: sequela
W29 Contact with other powered hand tools and household machinery
Excludes1 contact with commercial machinery (W31.82)
contact with hot household appliance (X15)
contact with nonpowered hand tool (W27.-)
exposure to electric current (W86)
char7Note The appropriate 7th character is to be added to each code from category W29
char7Def A: initial encounter
D: subsequent encounter
S: sequela
W29.0 Contact with powered kitchen appliance
Contact with blender
Contact with can-opener
Contact with garbage disposal
Contact with mixer
W29.1 Contact with electric knife
W29.2 Contact with other powered household machinery
Contact with electric fan
Contact with powered dryer (clothes) (powered) (spin)
Contact with washing-machine
Contact with sewing machine
W29.3 Contact with powered garden and outdoor hand tools and machinery
Contact with chainsaw
Contact with edger
Contact with garden cultivator (tiller)
Contact with hedge trimmer
Contact with other powered garden tool
Excludes1 contact with powered lawn mower (W28)
W29.4 Contact with nail gun
W29.8 Contact with other powered hand tools and household machinery
Contact with do-it-yourself tool NOS
W30 Contact with agricultural machinery
Includes animal-powered farm machine
Excludes1 agricultural transport vehicle accident (V01-V99)
explosion of grain store (W40.8)
exposure to electric current (W86.-)
char7Note The appropriate 7th character is to be added to each code from category W30
char7Def A: initial encounter
D: subsequent encounter
S: sequela
W30.0 Contact with combine harvester
Contact with reaper
Contact with thresher
W30.1 Contact with power take-off devices (PTO)
W30.2 Contact with hay derrick
W30.3 Contact with grain storage elevator
Excludes1 explosion of grain store (W40.8)
W30.8 Contact with other specified agricultural machinery
W30.81 Contact with agricultural transport vehicle in stationary use
Contact with agricultural transport vehicle under repair, not on public roadway
Excludes1 agricultural transport vehicle accident (V01-V99)
W30.89 Contact with other specified agricultural machinery
W30.9 Contact with unspecified agricultural machinery
Contact with farm machinery NOS
W31 Contact with other and unspecified machinery
Excludes1 contact with agricultural machinery (W30.-)
contact with machinery in transport under own power or being towed by a vehicle (V01-V99)
exposure to electric current (W86)
char7Note The appropriate 7th character is to be added to each code from category W31
char7Def A: initial encounter
D: subsequent encounter
S: sequela
W31.0 Contact with mining and earth-drilling machinery
Contact with bore or drill (land) (seabed)
Contact with shaft hoist
Contact with shaft lift
Contact with undercutter
W31.1 Contact with metalworking machines
Contact with abrasive wheel
Contact with forging machine
Contact with lathe
Contact with mechanical shears
Contact with metal drilling machine
Contact with milling machine
Contact with power press
Contact with rolling-mill
Contact with metal sawing machine
W31.2 Contact with powered woodworking and forming machines
Contact with band saw
Contact with bench saw
Contact with circular saw
Contact with molding machine
Contact with overhead plane
Contact with powered saw
Contact with radial saw
Contact with sander
Excludes1 nonpowered woodworking tools (W27.0)
W31.3 Contact with prime movers
Contact with gas turbine
Contact with internal combustion engine
Contact with steam engine
Contact with water driven turbine
W31.8 Contact with other specified machinery
W31.81 Contact with recreational machinery
Contact with roller coaster
W31.82 Contact with other commercial machinery
Contact with commercial electric fan
Contact with commercial kitchen appliances
Contact with commercial powered dryer (clothes) (powered) (spin)
Contact with commercial washing-machine
Contact with commercial sewing machine
Excludes1 contact with household machinery (W29.-)
contact with powered lawn mower (W28)
W31.83 Contact with special construction vehicle in stationary use
Contact with special construction vehicle under repair, not on public roadway
Excludes1 special construction vehicle accident (V01-V99)
W31.89 Contact with other specified machinery
W31.9 Contact with unspecified machinery
Contact with machinery NOS
W32 Accidental handgun discharge and malfunction
Includes accidental discharge and malfunction of gun for single hand use
accidental discharge and malfunction of pistol
accidental discharge and malfunction of revolver
Handgun discharge and malfunction NOS
Excludes1 accidental airgun discharge and malfunction (W34.010, W34.110)
accidental BB gun discharge and malfunction (W34.010, W34.110)
accidental pellet gun discharge and malfunction (W34.010, W34.110)
accidental shotgun discharge and malfunction (W33.01, W33.11)
assault by handgun discharge (X93)
handgun discharge involving legal intervention (Y35.0-)
handgun discharge involving military or war operations (Y36.4-)
intentional self-harm by handgun discharge (X72)
Very pistol discharge and malfunction (W34.09, W34.19)
char7Note The appropriate 7th character is to be added to each code from category W32
char7Def A: initial encounter
D: subsequent encounter
S: sequela
W32.0 Accidental handgun discharge
W32.1 Accidental handgun malfunction
Injury due to explosion of handgun (parts)
Injury due to malfunction of mechanism or component of handgun
Injury due to recoil of handgun
Powder burn from handgun
W33 Accidental rifle, shotgun and larger firearm discharge and malfunction
Includes rifle, shotgun and larger firearm discharge and malfunction NOS
Excludes1 accidental airgun discharge and malfunction (W34.010, W34.110)
accidental BB gun discharge and malfunction (W34.010, W34.110)
accidental handgun discharge and malfunction (W32.-)
accidental pellet gun discharge and malfunction (W34.010, W34.110)
assault by rifle, shotgun and larger firearm discharge (X94)
firearm discharge involving legal intervention (Y35.0-)
firearm discharge involving military or war operations (Y36.4-)
intentional self-harm by rifle, shotgun and larger firearm discharge (X73)
char7Note The appropriate 7th character is to be added to each code from category W33
char7Def A: initial encounter
D: subsequent encounter
S: sequela
W33.0 Accidental rifle, shotgun and larger firearm discharge
W33.00 Accidental discharge of unspecified larger firearm
Discharge of unspecified larger firearm NOS
W33.01 Accidental discharge of shotgun
Discharge of shotgun NOS
W33.02 Accidental discharge of hunting rifle
Discharge of hunting rifle NOS
W33.03 Accidental discharge of machine gun
Discharge of machine gun NOS
W33.09 Accidental discharge of other larger firearm
Discharge of other larger firearm NOS
W33.1 Accidental rifle, shotgun and larger firearm malfunction
Injury due to explosion of rifle, shotgun and larger firearm (parts)
Injury due to malfunction of mechanism or component of rifle, shotgun and larger firearm
Injury due to piercing, cutting, crushing or pinching due to (by) slide trigger mechanism, scope or other gun part
Injury due to recoil of rifle, shotgun and larger firearm
Powder burn from rifle, shotgun and larger firearm
W33.10 Accidental malfunction of unspecified larger firearm
Malfunction of unspecified larger firearm NOS
W33.11 Accidental malfunction of shotgun
Malfunction of shotgun NOS
W33.12 Accidental malfunction of hunting rifle
Malfunction of hunting rifle NOS
W33.13 Accidental malfunction of machine gun
Malfunction of machine gun NOS
W33.19 Accidental malfunction of other larger firearm
Malfunction of other larger firearm NOS
W34 Accidental discharge and malfunction from other and unspecified firearms and guns
char7Note The appropriate 7th character is to be added to each code from category W34
char7Def A: initial encounter
D: subsequent encounter
S: sequela
W34.0 Accidental discharge from other and unspecified firearms and guns
W34.00 Accidental discharge from unspecified firearms or gun
Discharge from firearm NOS
Gunshot wound NOS
Shot NOS
W34.01 Accidental discharge of gas, air or spring-operated guns
W34.010 Accidental discharge of airgun
Accidental discharge of BB gun
Accidental discharge of pellet gun
W34.011 Accidental discharge of paintball gun
Accidental injury due to paintball discharge
W34.018 Accidental discharge of other gas, air or spring-operated gun
W34.09 Accidental discharge from other specified firearms
Accidental discharge from Very pistol [flare]
W34.1 Accidental malfunction from other and unspecified firearms and guns
W34.10 Accidental malfunction from unspecified firearms or gun
Firearm malfunction NOS
W34.11 Accidental malfunction of gas, air or spring-operated guns
W34.110 Accidental malfunction of airgun
Accidental malfunction of BB gun
Accidental malfunction of pellet gun
W34.111 Accidental malfunction of paintball gun
Accidental injury due to paintball gun malfunction
W34.118 Accidental malfunction of other gas, air or spring-operated gun
W34.19 Accidental malfunction from other specified firearms
Accidental malfunction from Very pistol [flare]
W35 Explosion and rupture of boiler
Excludes1 explosion and rupture of boiler on watercraft (V93.4)
char7Note The appropriate 7th character is to be added to code W35
char7Def A: initial encounter
D: subsequent encounter
S: sequela
W36 Explosion and rupture of gas cylinder
char7Note The appropriate 7th character is to be added to each code from category W36
char7Def A: initial encounter
D: subsequent encounter
S: sequela
W36.1 Explosion and rupture of aerosol can
W36.2 Explosion and rupture of air tank
W36.3 Explosion and rupture of pressurized-gas tank
W36.8 Explosion and rupture of other gas cylinder
W36.9 Explosion and rupture of unspecified gas cylinder
W37 Explosion and rupture of pressurized tire, pipe or hose
char7Note The appropriate 7th character is to be added to each code from category W37
char7Def A: initial encounter
D: subsequent encounter
S: sequela
W37.0 Explosion of bicycle tire
W37.8 Explosion and rupture of other pressurized tire, pipe or hose
W38 Explosion and rupture of other specified pressurized devices
char7Note The appropriate 7th character is to be added to code W38
char7Def A: initial encounter
D: subsequent encounter
S: sequela
W39 Discharge of firework
char7Note The appropriate 7th character is to be added to code W39
char7Def A: initial encounter
D: subsequent encounter
S: sequela
W40 Explosion of other materials
Excludes1 assault by explosive material (X96)
explosion involving legal intervention (Y35.1-)
explosion involving military or war operations (Y36.0-, Y36.2-)
intentional self-harm by explosive material (X75)
char7Note The appropriate 7th character is to be added to each code from category W40
char7Def A: initial encounter
D: subsequent encounter
S: sequela
W40.0 Explosion of blasting material
Explosion of blasting cap
Explosion of detonator
Explosion of dynamite
Explosion of explosive (any) used in blasting operations
W40.1 Explosion of explosive gases
Explosion of acetylene
Explosion of butane
Explosion of coal gas
Explosion in mine NOS
Explosion of explosive gas
Explosion of fire damp
Explosion of gasoline fumes
Explosion of methane
Explosion of propane
W40.8 Explosion of other specified explosive materials
Explosion in dump NOS
Explosion in factory NOS
Explosion in grain store
Explosion in munitions
Excludes1 explosion involving legal intervention (Y35.1-)
explosion involving military or war operations (Y36.0-, Y36.2-)
W40.9 Explosion of unspecified explosive materials
Explosion NOS
W42 Exposure to noise
char7Note The appropriate 7th character is to be added to each code from category W42
char7Def A: initial encounter
D: subsequent encounter
S: sequela
W42.0 Exposure to supersonic waves
W42.9 Exposure to other noise
Exposure to sound waves NOS
W44 Foreign body entering into or through a natural orifice
Excludes2 contact with other sharp objects (W26)
contact with sharp glass (W25)
foreign body or object entering through skin (W45)
char7Note The appropriate 7th character is to be added to each code from category W44
char7Def A: initial encounter
D: subsequent encounter
S: sequela
W44.A Battery entering into or through a natural orifice
W44.A0 Battery unspecified, entering into or through a natural orifice
W44.A1 Button battery entering into or through a natural orifice
W44.A9 Other batteries entering into or through a natural orifice
Cylindrical battery
W44.B Plastic entering into or through a natural orifice
W44.B0 Plastic object unspecified, entering into or through a natural orifice
W44.B1 Plastic bead entering into or through a natural orifice
Excludes2 Plastic jewelry entering into or through a natural orifice (W44.B4)
W44.B2 Plastic coin entering into or through a natural orifice
W44.B3 Plastic toy and toy part entering into or through a natural orifice
W44.B4 Plastic jewelry entering into or through a natural orifice
Excludes2 Plastic bead entering into or through a natural orifice (W44.B1)
W44.B5 Plastic bottle entering into or through a natural orifice
W44.B9 Other plastic object entering into or through a natural orifice
W44.C Glass entering into or through a natural orifice
W44.C0 Glass unspecified, entering into or through a natural orifice
W44.C1 Sharp glass entering into or through a natural orifice
Glass shard entering into or through a natural orifice
W44.C2 Intact glass entering into or through a natural orifice
Intact glass bottle entering into or through a natural orifice
W44.D Magnetic metal entering into or through a natural orifice
W44.D0 Magnetic metal object unspecified, entering into or through a natural orifice
W44.D1 Magnetic metal bead entering into or through a natural orifice
W44.D2 Magnetic metal coin entering into or through a natural orifice
W44.D3 Magnetic metal toy entering into or through a natural orifice
W44.D4 Magnetic metal jewelry entering into or through a natural orifice
W44.D9 Other magnetic metal objects entering into or through a natural orifice
W44.E Non-magnetic metal entering into or through a natural orifice
W44.E0 Non-magnetic metal object unspecified, entering into or through a natural orifice
W44.E1 Non-magnetic metal bead entering into or through a natural orifice
W44.E2 Non-magnetic metal coin entering into or through a natural orifice
W44.E3 Non-magnetic metal toy entering into or through a natural orifice
W44.E4 Non-magnetic metal jewelry entering into or through a natural orifice
W44.E9 Other non-magnetic metal objects entering into or through a natural orifice
Bottle cap entering into or through a natural orifice
Can lid entering into or through a natural orifice
Pull tab entering into or through a natural orifice
W44.F Objects of natural or organic material entering into or through a natural orifice
W44.F0 Objects of natural or organic material unspecified, entering into or through a natural orifice
W44.F1 Bezoar entering into or through a natural orifice
W44.F2 Rubber band entering into or through a natural orifice
W44.F3 Food entering into or through a natural orifice
W44.F4 Insect entering into or through a natural orifice
W44.F9 Other object of natural or organic material, entering into or through a natural orifice
W44.G Other non-organic objects entering into or through a natural orifice
W44.G0 Other non-organic objects unspecified, entering into or through a natural orifice
W44.G1 Audio device entering into or through a natural orifice
Ear buds
Hearing aids
W44.G2 Combination metal and plastic toy and toy part entering into or through natural orifice
W44.G3 Combination metal and plastic jewelry entering into or through a natural orifice
W44.G9 Other non-organic objects entering into or through a natural orifice
W44.H Other sharp object entering into or through a natural orifice
W44.H0 Other sharp object unspecified, entering into or through a natural orifice
W44.H1 Needle entering into or through a natural orifice
Dart entering into or through a natural orifice
Hypodermic needle entering into or through a natural orifice
Safety pin entering into or through a natural orifice
Sewing needle entering into or through a natural orifice
W44.H2 Knife, sword or dagger entering into or through a natural orifice
W44.8 Other foreign body entering into or through a natural orifice
W44.9 Unspecified foreign body entering into or through a natural orifice
Foreign body NOS entering into or through a natural orifice
W45 Foreign body or object entering through skin
Includes foreign body or object embedded in skin
nail embedded in skin
Excludes2 contact with hand tools (nonpowered) (powered) (W27-W29)
contact with other sharp object(s) (W26.-)
contact with sharp glass (W25.-)
struck by objects (W20-W22)
char7Note The appropriate 7th character is to be added to each code from category W45
char7Def A: initial encounter
D: subsequent encounter
S: sequela
W45.0 Nail entering through skin
W45.8 Other foreign body or object entering through skin
Splinter in skin NOS
W46 Contact with hypodermic needle
char7Note The appropriate 7th character is to be added to each code from category W46
char7Def A: initial encounter
D: subsequent encounter
S: sequela
W46.0 Contact with hypodermic needle
Hypodermic needle stick NOS
W46.1 Contact with contaminated hypodermic needle
W49 Exposure to other inanimate mechanical forces
Includes exposure to abnormal gravitational [G] forces
exposure to inanimate mechanical forces NEC
Excludes1 exposure to inanimate mechanical forces involving military or war operations (Y36.-, Y37.-)
char7Note The appropriate 7th character is to be added to each code from category W49
char7Def A: initial encounter
D: subsequent encounter
S: sequela
W49.0 Item causing external constriction
W49.01 Hair causing external constriction
W49.02 String or thread causing external constriction
W49.03 Rubber band causing external constriction
W49.04 Ring or other jewelry causing external constriction
W49.09 Other specified item causing external constriction
W49.9 Exposure to other inanimate mechanical forces