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Chapter 20: External causes of morbidity (V00-Y99)

Code Range: V00 — Y99 34 Sections FY 2026

This chapter of the ICD-10-CM classification covers diagnosis codes from V00 through Y99. Browse the sections below to find specific diagnosis codes within this chapter.

Chapter Notes

  • This chapter permits the classification of environmental events and circumstances as the cause of injury, and other adverse effects. Where a code from this section is applicable, it is intended that it shall be used secondary to a code from another chapter of the Classification indicating the nature of the condition. Most often, the condition will be classifiable to Chapter 19, Injury, poisoning and certain other consequences of external causes (S00-T88). Other conditions that may be stated to be due to external causes are classified in Chapters I to XVIII. For these conditions, codes from Chapter 20 should be used to provide additional information as to the cause of the condition.

Sections

  • V00-V09 Pedestrian injured in transport accident (V00-V09)
    242 codes
  • V00-V99 Transport accidents (V00-V99)
  • V00-X58 Accidents (V00-X58)
  • V10-V19 Pedal cycle rider injured in transport accident (V10-V19)
    96 codes
  • V20-V29 Motorcycle rider injured in transport accident (V20-V29)
    254 codes
  • V30-V39 Occupant of three-wheeled motor vehicle injured in transport accident (V30-V39)
    114 codes
  • V40-V49 Car occupant injured in transport accident (V40-V49)
    150 codes
  • V50-V59 Occupant of pick-up truck or van injured in transport accident (V50-V59)
    114 codes
  • V60-V69 Occupant of heavy transport vehicle injured in transport accident (V60-V69)
    114 codes
  • V70-V79 Bus occupant injured in transport accident (V70-V79)
    114 codes
  • V80-V89 Other land transport accidents (V80-V89)
    206 codes
  • V90-V94 Water transport accidents (V90-V94)
    223 codes
  • V95-V97 Air and space transport accidents (V95-V97)
    88 codes
  • V98-V99 Other and unspecified transport accidents (V98-V99)
    7 codes
  • W00-W19 Slipping, tripping, stumbling and falls (W00-W19)
    158 codes
  • W00-X58 Other external causes of accidental injury (W00-X58)
  • W20-W49 Exposure to inanimate mechanical forces (W20-W49)
    218 codes
  • W50-W64 Exposure to animate mechanical forces (W50-W64)
    153 codes
  • W65-W74 Accidental non-transport drowning and submersion (W65-W74)
    5 codes
  • W85-W99 Exposure to electric current, radiation and extreme ambient air temperature and pressure (W85-W99)
    44 codes
  • X00-X08 Exposure to smoke, fire and flames (X00-X08)
    49 codes
  • X10-X19 Contact with heat and hot substances (X10-X19)
    25 codes
  • X30-X39 Exposure to forces of nature (X30-X39)
    25 codes
  • X50 Overexertion and strenuous or repetitive movements (X50)
    5 codes
  • X52-X58 Accidental exposure to other specified factors (X52-X58)
    2 codes
  • X71-X83 Intentional self-harm (X71-X83)
    52 codes
  • X92-Y09 Assault (X92-Y09)
    127 codes
  • Y21-Y33 Event of undetermined intent (Y21-Y33)
    40 codes
  • Y35-Y38 Legal intervention, operations of war, military operations, and terrorism (Y35-Y38)
    479 codes
  • Y62-Y69 Misadventures to patients during surgical and medical care (Y62-Y69)
    38 codes
  • Y62-Y84 Complications of medical and surgical care (Y62-Y84)
  • Y70-Y82 Medical devices associated with adverse incidents in diagnostic and therapeutic use (Y70-Y82)
    77 codes
  • Y83-Y84 Surgical and other medical procedures as the cause of abnormal reaction of the patient, or of later complication, without mention of misadventure at the time of the procedure (Y83-Y84)
    21 codes
  • Y90-Y99 Supplementary factors related to causes of morbidity classified elsewhere (Y90-Y99)
    396 codes

Top-Level Codes in This Chapter

  • V00 Pedestrian conveyance accident
  • V01 Pedestrian injured in collision with pedal cycle
  • V02 Pedestrian injured in collision with two- or three-wheeled motor vehicle
  • V03 Pedestrian injured in collision with car, pick-up truck or van
  • V04 Pedestrian injured in collision with heavy transport vehicle or bus
  • V05 Pedestrian injured in collision with railway train or railway vehicle
  • V06 Pedestrian injured in collision with other nonmotor vehicle
  • V09 Pedestrian injured in other and unspecified transport accidents
  • V10 Pedal cycle rider injured in collision with pedestrian or animal
  • V11 Pedal cycle rider injured in collision with other pedal cycle
  • V12 Pedal cycle rider injured in collision with two- or three-wheeled motor vehicle
  • V13 Pedal cycle rider injured in collision with car, pick-up truck or van
  • V14 Pedal cycle rider injured in collision with heavy transport vehicle or bus
  • V15 Pedal cycle rider injured in collision with railway train or railway vehicle
  • V16 Pedal cycle rider injured in collision with other nonmotor vehicle
  • V17 Pedal cycle rider injured in collision with fixed or stationary object
  • V18 Pedal cycle rider injured in noncollision transport accident
  • V19 Pedal cycle rider injured in other and unspecified transport accidents
  • V20 Motorcycle rider injured in collision with pedestrian or animal
  • V21 Motorcycle rider injured in collision with pedal cycle
  • V22 Motorcycle rider injured in collision with two- or three-wheeled motor vehicle
  • V23 Motorcycle rider injured in collision with car, pick-up truck or van
  • V24 Motorcycle rider injured in collision with heavy transport vehicle or bus
  • V25 Motorcycle rider injured in collision with railway train or railway vehicle
  • V26 Motorcycle rider injured in collision with other nonmotor vehicle
  • V27 Motorcycle rider injured in collision with fixed or stationary object
  • V28 Motorcycle rider injured in noncollision transport accident
  • V29 Motorcycle rider injured in other and unspecified transport accidents
  • V30 Occupant of three-wheeled motor vehicle injured in collision with pedestrian or animal
  • V31 Occupant of three-wheeled motor vehicle injured in collision with pedal cycle
  • V32 Occupant of three-wheeled motor vehicle injured in collision with two- or three-wheeled motor vehicle
  • V33 Occupant of three-wheeled motor vehicle injured in collision with car, pick-up truck or van
  • V34 Occupant of three-wheeled motor vehicle injured in collision with heavy transport vehicle or bus
  • V35 Occupant of three-wheeled motor vehicle injured in collision with railway train or railway vehicle
  • V36 Occupant of three-wheeled motor vehicle injured in collision with other nonmotor vehicle
  • V37 Occupant of three-wheeled motor vehicle injured in collision with fixed or stationary object
  • V38 Occupant of three-wheeled motor vehicle injured in noncollision transport accident
  • V39 Occupant of three-wheeled motor vehicle injured in other and unspecified transport accidents
  • V40 Car occupant injured in collision with pedestrian or animal
  • V41 Car occupant injured in collision with pedal cycle
  • V42 Car occupant injured in collision with two- or three-wheeled motor vehicle
  • V43 Car occupant injured in collision with car, pick-up truck or van
  • V44 Car occupant injured in collision with heavy transport vehicle or bus
  • V45 Car occupant injured in collision with railway train or railway vehicle
  • V46 Car occupant injured in collision with other nonmotor vehicle
  • V47 Car occupant injured in collision with fixed or stationary object
  • V48 Car occupant injured in noncollision transport accident
  • V49 Car occupant injured in other and unspecified transport accidents
  • V50 Occupant of pick-up truck or van injured in collision with pedestrian or animal
  • V51 Occupant of pick-up truck or van injured in collision with pedal cycle
  • V52 Occupant of pick-up truck or van injured in collision with two- or three-wheeled motor vehicle
  • V53 Occupant of pick-up truck or van injured in collision with car, pick-up truck or van
  • V54 Occupant of pick-up truck or van injured in collision with heavy transport vehicle or bus
  • V55 Occupant of pick-up truck or van injured in collision with railway train or railway vehicle
  • V56 Occupant of pick-up truck or van injured in collision with other nonmotor vehicle
  • V57 Occupant of pick-up truck or van injured in collision with fixed or stationary object
  • V58 Occupant of pick-up truck or van injured in noncollision transport accident
  • V59 Occupant of pick-up truck or van injured in other and unspecified transport accidents
  • V60 Occupant of heavy transport vehicle injured in collision with pedestrian or animal
  • V61 Occupant of heavy transport vehicle injured in collision with pedal cycle
  • V62 Occupant of heavy transport vehicle injured in collision with two- or three-wheeled motor vehicle
  • V63 Occupant of heavy transport vehicle injured in collision with car, pick-up truck or van
  • V64 Occupant of heavy transport vehicle injured in collision with heavy transport vehicle or bus
  • V65 Occupant of heavy transport vehicle injured in collision with railway train or railway vehicle
  • V66 Occupant of heavy transport vehicle injured in collision with other nonmotor vehicle
  • V67 Occupant of heavy transport vehicle injured in collision with fixed or stationary object
  • V68 Occupant of heavy transport vehicle injured in noncollision transport accident
  • V69 Occupant of heavy transport vehicle injured in other and unspecified transport accidents
  • V70 Bus occupant injured in collision with pedestrian or animal
  • V71 Bus occupant injured in collision with pedal cycle
  • V72 Bus occupant injured in collision with two- or three-wheeled motor vehicle
  • V73 Bus occupant injured in collision with car, pick-up truck or van
  • V74 Bus occupant injured in collision with heavy transport vehicle or bus
  • V75 Bus occupant injured in collision with railway train or railway vehicle
  • V76 Bus occupant injured in collision with other nonmotor vehicle
  • V77 Bus occupant injured in collision with fixed or stationary object
  • V78 Bus occupant injured in noncollision transport accident
  • V79 Bus occupant injured in other and unspecified transport accidents
  • V80 Animal-rider or occupant of animal-drawn vehicle injured in transport accident
  • V81 Occupant of railway train or railway vehicle injured in transport accident
  • V82 Occupant of powered streetcar injured in transport accident
  • V83 Occupant of special vehicle mainly used on industrial premises injured in transport accident
  • V84 Occupant of special vehicle mainly used in agriculture injured in transport accident
  • V85 Occupant of special construction vehicle injured in transport accident
  • V86 Occupant of special all-terrain or other off-road motor vehicle, injured in transport accident
  • V87 Traffic accident of specified type but victim's mode of transport unknown
  • V88 Nontraffic accident of specified type but victim's mode of transport unknown
  • V89 Motor- or nonmotor-vehicle accident, type of vehicle unspecified
  • V90 Drowning and submersion due to accident to watercraft
  • V91 Other injury due to accident to watercraft
  • V92 Drowning and submersion due to accident on board watercraft, without accident to watercraft
  • V93 Other injury due to accident on board watercraft, without accident to watercraft
  • V94 Other and unspecified water transport accidents
  • V95 Accident to powered aircraft causing injury to occupant
  • V96 Accident to nonpowered aircraft causing injury to occupant
  • V97 Other specified air transport accidents
  • V98 Other specified transport accidents
  • V99 Unspecified transport accident Billable
  • W00 Fall due to ice and snow
  • W01 Fall on same level from slipping, tripping and stumbling
  • W03 Other fall on same level due to collision with another person Billable
  • W04 Fall while being carried or supported by other persons Billable
  • W05 Fall from non-moving wheelchair, nonmotorized scooter and motorized mobility scooter
  • W06 Fall from bed Billable
  • W07 Fall from chair Billable
  • W08 Fall from other furniture Billable
  • W09 Fall on and from playground equipment
  • W10 Fall on and from stairs and steps
  • W11 Fall on and from ladder Billable
  • W12 Fall on and from scaffolding Billable
  • W13 Fall from, out of or through building or structure
  • W14 Fall from tree Billable
  • W15 Fall from cliff Billable
  • W16 Fall, jump or diving into water
  • W17 Other fall from one level to another
  • W18 Other slipping, tripping and stumbling and falls
  • W19 Unspecified fall Billable
  • W20 Struck by thrown, projected or falling object
  • W21 Striking against or struck by sports equipment
  • W22 Striking against or struck by other objects
  • W23 Caught, crushed, jammed or pinched in or between objects
  • W24 Contact with lifting and transmission devices, not elsewhere classified
  • W25 Contact with sharp glass Billable
  • W26 Contact with other sharp objects
  • W27 Contact with nonpowered hand tool
  • W28 Contact with powered lawn mower Billable
  • W29 Contact with other powered hand tools and household machinery
  • W30 Contact with agricultural machinery
  • W31 Contact with other and unspecified machinery
  • W32 Accidental handgun discharge and malfunction
  • W33 Accidental rifle, shotgun and larger firearm discharge and malfunction
  • W34 Accidental discharge and malfunction from other and unspecified firearms and guns
  • W35 Explosion and rupture of boiler Billable
  • W36 Explosion and rupture of gas cylinder
  • W37 Explosion and rupture of pressurized tire, pipe or hose
  • W38 Explosion and rupture of other specified pressurized devices Billable
  • W39 Discharge of firework Billable
  • W40 Explosion of other materials
  • W42 Exposure to noise
  • W44 Foreign body entering into or through a natural orifice
  • W45 Foreign body or object entering through skin
  • W46 Contact with hypodermic needle
  • W49 Exposure to other inanimate mechanical forces
  • W50 Accidental hit, strike, kick, twist, bite or scratch by another person
  • W51 Accidental striking against or bumped into by another person Billable
  • W52 Crushed, pushed or stepped on by crowd or human stampede Billable
  • W53 Contact with rodent
  • W54 Contact with dog
  • W55 Contact with other mammals
  • W56 Contact with nonvenomous marine animal
  • W57 Bitten or stung by nonvenomous insect and other nonvenomous arthropods Billable
  • W58 Contact with crocodile or alligator
  • W59 Contact with other nonvenomous reptiles
  • W60 Contact with nonvenomous plant thorns and spines and sharp leaves Billable
  • W61 Contact with birds (domestic) (wild)
  • W62 Contact with nonvenomous amphibians
  • W64 Exposure to other animate mechanical forces Billable
  • W65 Accidental drowning and submersion while in bath-tub Billable
  • W67 Accidental drowning and submersion while in swimming-pool Billable
  • W69 Accidental drowning and submersion while in natural water Billable
  • W73 Other specified cause of accidental non-transport drowning and submersion Billable
  • W74 Unspecified cause of accidental drowning and submersion Billable
  • W85 Exposure to electric transmission lines Billable
  • W86 Exposure to other specified electric current
  • W88 Exposure to ionizing radiation
  • W89 Exposure to man-made visible and ultraviolet light
  • W90 Exposure to other nonionizing radiation
  • W92 Exposure to excessive heat of man-made origin Billable
  • W93 Exposure to excessive cold of man-made origin
  • W94 Exposure to high and low air pressure and changes in air pressure
  • W99 Exposure to other man-made environmental factors Billable
  • X00 Exposure to uncontrolled fire in building or structure
  • X01 Exposure to uncontrolled fire, not in building or structure
  • X02 Exposure to controlled fire in building or structure
  • X03 Exposure to controlled fire, not in building or structure
  • X04 Exposure to ignition of highly flammable material Billable
  • X05 Exposure to ignition or melting of nightwear Billable
  • X06 Exposure to ignition or melting of other clothing and apparel
  • X08 Exposure to other specified smoke, fire and flames
  • X10 Contact with hot drinks, food, fats and cooking oils
  • X11 Contact with hot tap-water
  • X12 Contact with other hot fluids Billable
  • X13 Contact with steam and other hot vapors
  • X14 Contact with hot air and other hot gases
  • X15 Contact with hot household appliances
  • X16 Contact with hot heating appliances, radiators and pipes Billable
  • X17 Contact with hot engines, machinery and tools Billable
  • X18 Contact with other hot metals Billable
  • X19 Contact with other heat and hot substances Billable
  • X30 Exposure to excessive natural heat Billable
  • X31 Exposure to excessive natural cold Billable
  • X32 Exposure to sunlight Billable
  • X34 Earthquake Billable
  • X35 Volcanic eruption Billable
  • X36 Avalanche, landslide and other earth movements
  • X37 Cataclysmic storm
  • X38 Flood Billable
  • X39 Exposure to other forces of nature
  • X50 Overexertion and strenuous or repetitive movements
  • X52 Prolonged stay in weightless environment Billable
  • X58 Exposure to other specified factors Billable
  • X71 Intentional self-harm by drowning and submersion
  • X72 Intentional self-harm by handgun discharge Billable
  • X73 Intentional self-harm by rifle, shotgun and larger firearm discharge
  • X74 Intentional self-harm by other and unspecified firearm and gun discharge
  • X75 Intentional self-harm by explosive material Billable
  • X76 Intentional self-harm by smoke, fire and flames Billable
  • X77 Intentional self-harm by steam, hot vapors and hot objects
  • X78 Intentional self-harm by sharp object
  • X79 Intentional self-harm by blunt object Billable
  • X80 Intentional self-harm by jumping from a high place Billable
  • X81 Intentional self-harm by jumping or lying in front of moving object
  • X82 Intentional self-harm by crashing of motor vehicle
  • X83 Intentional self-harm by other specified means
  • X92 Assault by drowning and submersion
  • X93 Assault by handgun discharge Billable
  • X94 Assault by rifle, shotgun and larger firearm discharge
  • X95 Assault by other and unspecified firearm and gun discharge
  • X96 Assault by explosive material
  • X97 Assault by smoke, fire and flames Billable
  • X98 Assault by steam, hot vapors and hot objects
  • X99 Assault by sharp object
  • Y00 Assault by blunt object Billable
  • Y01 Assault by pushing from high place Billable
  • Y02 Assault by pushing or placing victim in front of moving object
  • Y03 Assault by crashing of motor vehicle
  • Y04 Assault by bodily force
  • Y07 Perpetrator of assault, maltreatment and neglect
  • Y08 Assault by other specified means
  • Y09 Assault by unspecified means Billable
  • Y21 Drowning and submersion, undetermined intent
  • Y22 Handgun discharge, undetermined intent Billable
  • Y23 Rifle, shotgun and larger firearm discharge, undetermined intent
  • Y24 Other and unspecified firearm discharge, undetermined intent
  • Y25 Contact with explosive material, undetermined intent Billable
  • Y26 Exposure to smoke, fire and flames, undetermined intent Billable
  • Y27 Contact with steam, hot vapors and hot objects, undetermined intent
  • Y28 Contact with sharp object, undetermined intent
  • Y29 Contact with blunt object, undetermined intent Billable
  • Y30 Falling, jumping or pushed from a high place, undetermined intent Billable
  • Y31 Falling, lying or running before or into moving object, undetermined intent Billable
  • Y32 Crashing of motor vehicle, undetermined intent Billable
  • Y33 Other specified events, undetermined intent Billable
  • Y35 Legal intervention
  • Y36 Operations of war
  • Y37 Military operations
  • Y38 Terrorism
  • Y62 Failure of sterile precautions during surgical and medical care
  • Y63 Failure in dosage during surgical and medical care
  • Y64 Contaminated medical or biological substances
  • Y65 Other misadventures during surgical and medical care
  • Y66 Nonadministration of surgical and medical care Billable
  • Y69 Unspecified misadventure during surgical and medical care Billable
  • Y70 Anesthesiology devices associated with adverse incidents
  • Y71 Cardiovascular devices associated with adverse incidents
  • Y72 Otorhinolaryngological devices associated with adverse incidents
  • Y73 Gastroenterology and urology devices associated with adverse incidents
  • Y74 General hospital and personal-use devices associated with adverse incidents
  • Y75 Neurological devices associated with adverse incidents
  • Y76 Obstetric and gynecological devices associated with adverse incidents
  • Y77 Ophthalmic devices associated with adverse incidents
  • Y78 Radiological devices associated with adverse incidents
  • Y79 Orthopedic devices associated with adverse incidents
  • Y80 Physical medicine devices associated with adverse incidents
  • Y81 General- and plastic-surgery devices associated with adverse incidents
  • Y82 Other and unspecified medical devices associated with adverse incidents
  • Y83 Surgical operation and other surgical procedures as the cause of abnormal reaction of the patient, or of later complication, without mention of misadventure at the time of the procedure
  • Y84 Other medical procedures as the cause of abnormal reaction of the patient, or of later complication, without mention of misadventure at the time of the procedure
  • Y90 Evidence of alcohol involvement determined by blood alcohol level
  • Y92 Place of occurrence of the external cause
  • Y93 Activity codes
  • Y95 Nosocomial condition Billable
  • Y99 External cause status

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