V00-Y99

ICD-10-CM Chapter 20: External causes of morbidity

Chapter 20 of the ICD-10-CM tabular list covers V00-Y99. It contains 34 blocks of related categories, listed below with the categories published in each.

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.

V00-X58: Accidents

V00-V99: Transport accidents

V00-V09: Pedestrian injured in transport accident

V10-V19: Pedal cycle rider injured in transport accident

V20-V29: Motorcycle rider injured in transport accident

V30-V39: Occupant of three-wheeled motor vehicle injured in transport accident

V40-V49: Car occupant injured in transport accident

V50-V59: Occupant of pick-up truck or van injured in transport accident

V60-V69: Occupant of heavy transport vehicle injured in transport accident

V70-V79: Bus occupant injured in transport accident

V80-V89: Other land transport accidents

V90-V94: Water transport accidents

V95-V97: Air and space transport accidents

V98-V99: Other and unspecified transport accidents

W00-X58: Other external causes of accidental injury

W00-W19: Slipping, tripping, stumbling and falls

W20-W49: Exposure to inanimate mechanical forces

W50-W64: Exposure to animate mechanical forces

W65-W74: Accidental non-transport drowning and submersion

W85-W99: Exposure to electric current, radiation and extreme ambient air temperature and pressure

X00-X08: Exposure to smoke, fire and flames

X10-X19: Contact with heat and hot substances

X30-X39: Exposure to forces of nature

X50: Overexertion and strenuous or repetitive movements

X52-X58: Accidental exposure to other specified factors

X71-X83: Intentional self-harm

X92-Y09: Assault

Y21-Y33: Event of undetermined intent

Y35-Y38: Legal intervention, operations of war, military operations, and terrorism

Y62-Y84: Complications of medical and surgical care

Y62-Y69: Misadventures to patients during surgical and medical care

Y70-Y82: Medical devices associated with adverse incidents in diagnostic and therapeutic use

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

Y90-Y99: Supplementary factors related to causes of morbidity classified elsewhere

Source

ICD-10-CM FY2026. Centers for Medicare & Medicaid Services (CMS) / National Center for Health Statistics (NCHS), “2026 ICD-10-CM Code Descriptions in Tabular Order” (icd10cm_order_2026.txt). Download the original file from cms.gov. Public domain (US Government work). Descriptors, billable flags and instructional notes on this page are reproduced from that file without modification. Krasyn adds no clinical guidance.

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