ICD-10-CM Tabular Index · Chapter 20 · FY 2026 V00–Y99
External causes of morbidity and mortality (V01–Y99) ICD-10-CM
Chapter 20 of the ICD-10-CM classification spans codes V00–Y99 and contains 10,602 diagnosis codes for external causes of morbidity and mortality, of which 7,461 are billable. The chapter is organized into 34 sections listed below, each linking to its code ranges and individual codes.
✓ Built from the official CMS FY 2026 datasetEffective Oct 1, 2025 – Sep 30, 2026
34
Sections
10,602
Diagnosis Codes
7,461
Billable Codes
V00–Y99
Code Range
Chapter Coding Notes
Note: 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.
The info icon previews the code ranges inside each row and its instructional notations from the official Tabular List.
About Chapter 20
Chapter 20 of ICD-10-CM, covering codes V01–Y99, is used to document external causes of injuries, poisonings, and other adverse effects. These codes identify how an injury or health issue happened rather than describing the injury itself.
This chapter provides detailed categories for various causes such as transportation accidents, falls, exposure to harmful substances, and other environmental factors. It helps healthcare providers and coders specify the context or circumstances leading to a patient’s condition, which is essential for injury prevention efforts and public health analysis. By specifying events like motor vehicle collisions or accidental poisonings, these codes offer critical insights into patterns of harm and support the development of safety measures. They also document intentional injuries, including assaults and self-harm, and incidents related to medical care or equipment.
Questions About This Page
How many codes are in the V00-Y99 range?
The V00-Y99 range contains 10,602 ICD-10-CM diagnosis codes in FY 2026. 7,461 of them are billable, and the rest are category headers that organize the chapter.
What conditions does V00-Y99 cover?
The range covers external causes of morbidity and mortality. The sections listed above break it into groups of related conditions, and each one links to its own page with the full code list.
The “use additional code” indicates that a secondary code could be used to further specify the patient’s condition. This note is not mandatory and is only used if enough information is available to assign an additional code.
Use of cellular telephone and other electronic equipment at the time of the transport accident Y93.C
Type 1 Excludes
A type 1 excludes note is a pure excludes note. It means "NOT CODED HERE!" An Excludes1 note indicates that the code excluded should never be used at the same time as the code above the Excludes1 note. An Excludes1 is used when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
agricultural vehicles in stationary use or maintenance W31
automobile or motor cycle in stationary use or maintenance- code to type of accident
crashing of motor vehicle, undetermined intent Y32
intentional self-harm by crashing of motor vehicle X82
Type 2 Excludes
A type 2 excludes note represents "Not included here". An excludes2 note indicates that the condition excluded is not part of the condition represented by the code, but a patient may have both conditions at the same time. When an Excludes2 note appears under a code, it is acceptable to use both the code and the excluded code together, when appropriate.
(b) A public highway [trafficway] or street is the entire width between property lines (or other boundary lines) of land open to the public as a matter of right or custom for purposes of moving persons or property from one place to another. A roadway is that part of the public highway designed, improved and customarily used for vehicular traffic.
(c) A traffic accident is any vehicle accident occurring on the public highway [i.e. originating on, terminating on, or involving a vehicle partially on the highway]. A vehicle accident is assumed to have occurred on the public highway unless another place is specified, except in the case of accidents involving only off-road motor vehicles, which are classified as nontraffic accidents unless the contrary is stated.
(d) A nontraffic accident is any vehicle accident that occurs entirely in any place other than a public highway.
(e) A pedestrian is any person involved in an accident who was not at the time of the accident riding in or on a motor vehicle, railway train, streetcar or animal-drawn or other vehicle, or on a pedal cycle or animal. This includes, a person changing a tire, working on a parked car, or a person on foot. It also includes the user of a pedestrian conveyance such as a baby stroller, ice-skates, skis, sled, roller skates, a skateboard, nonmotorized or motorized wheelchair, motorized mobility scooter, or nonmotorized scooter.
(f) A driver is an occupant of a transport vehicle who is operating or intending to operate it.
(g) A passenger is any occupant of a transport vehicle other than the driver, except a person traveling on the outside of the vehicle.
(h) A person on the outside of a vehicle is any person being transported by a vehicle but not occupying the space normally reserved for the driver or passengers, or the space intended for the transport of property. This includes a person travelling on the bodywork, bumper, fender, roof, running board or step of a vehicle, as well as, hanging on the outside of the vehicle.
(i) A pedal cycle is any land transport vehicle operated solely by nonmotorized pedals including a bicycle or tricycle.
(j) A pedal cyclist is any person riding a pedal cycle or in a sidecar or trailer attached to a pedal cycle.
(k) A motorcycle is a two-wheeled motor vehicle with one or two riding saddles and sometimes with a third wheel for the support of a sidecar. The sidecar is considered part of the motorcycle. This includes a moped, motor scooter, or motorized bicycle.
(l) A motorcycle rider is any person riding a motorcycle or in a sidecar or trailer attached to the motorcycle.
(m) A three-wheeled motor vehicle is a motorized tricycle designed primarily for on-road use. This includes a motor-driven tricycle, a motorized rickshaw, or a three-wheeled motor car.
(n) A car [automobile] is a four-wheeled motor vehicle designed primarily for carrying up to 7 persons. A trailer being towed by the car is considered part of the car. It does not include a van or minivan - see definition (o)
(o) A pick-up truck or van is a four or six-wheeled motor vehicle designed for carrying passengers as well as property or cargo weighing less than the local limit for classification as a heavy goods vehicle, and not requiring a special driver's license. This includes a minivan and a sport-utility vehicle (SUV).
(p) A heavy transport vehicle is a motor vehicle designed primarily for carrying property, meeting local criteria for classification as a heavy goods vehicle in terms of weight and requiring a special driver's license.
(q) A bus (coach) is a motor vehicle designed or adapted primarily for carrying more than 10 passengers, and requiring a special driver's license.
(r) A railway train or railway vehicle is any device, with or without freight or passenger cars couple to it, designed for traffic on a railway track. This includes subterranean (subways) or elevated trains.
(s) A streetcar, is a device designed and used primarily for transporting passengers within a municipality, running on rails, usually subject to normal traffic control signals, and operated principally on a right-of-way that forms part of the roadway. This includes a tram or trolley that runs on rails. A trailer being towed by a streetcar is considered part of the streetcar.
(t) A special vehicle mainly used on industrial premises is a motor vehicle designed primarily for use within the buildings and premises of industrial or commercial establishments. This includes battery-powered airport passenger vehicles or baggage/mail trucks, forklifts, coal-cars in a coal mine, logging cars and trucks used in mines or quarries.
(u) A special vehicle mainly used in agriculture is a motor vehicle designed specifically for use in farming and agriculture (horticulture), to work the land, tend and harvest crops and transport materials on the farm. This includes harvesters, farm machinery and tractor and trailers.
(v) A special construction vehicle is a motor vehicle designed specifically for use on construction and demolition sites. This includes bulldozers, diggers, earth levellers, dump trucks. backhoes, front-end loaders, pavers, and mechanical shovels.
(w) A special all-terrain vehicle is a motor vehicle of special design to enable it to negotiate over rough or soft terrain, snow or sand. Examples of special design are high construction, special wheels and tires, tracks, and support on a cushion of air. This includes snow mobiles, All-terrain vehicles (ATV), and dune buggies. It does not include passenger vehicle designated as Sport Utility Vehicles. (SUV)
(x) A watercraft is any device designed for transporting passengers or goods on water. This includes motor or sail boats, ships, and hovercraft.
(y) An aircraft is any device for transporting passengers or goods in the air. This includes hot-air balloons, gliders, helicopters and airplanes.
(z) A military vehicle is any motorized vehicle operating on a public roadway owned by the military and being operated by a member of the military.
This note appears immediately under a three character code title to further define, or give examples of, the content of the category.
person changing tire on transport vehicle
person examining engine of vehicle broken down in (on side of) road
Type 1 Excludes
A type 1 excludes note is a pure excludes note. It means "NOT CODED HERE!" An Excludes1 note indicates that the code excluded should never be used at the same time as the code above the Excludes1 note. An Excludes1 is used when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
fall due to non-transport collision with other person W03
pedestrian on foot falling slipping on ice and snow W00
This note appears immediately under a three character code title to further define, or give examples of, the content of the category.
any non-motorized vehicle, excluding an animal-drawn vehicle, or a sidecar or trailer attached to the pedal cycle
Type 2 Excludes
A type 2 excludes note represents "Not included here". An excludes2 note indicates that the condition excluded is not part of the condition represented by the code, but a patient may have both conditions at the same time. When an Excludes2 note appears under a code, it is acceptable to use both the code and the excluded code together, when appropriate.
This note appears immediately under a three character code title to further define, or give examples of, the content of the category.
electric bicycle
e-bike
e-bicycle
moped
motorcycle with sidecar
motorized bicycle
motor scooter
Type 1 Excludes
A type 1 excludes note is a pure excludes note. It means "NOT CODED HERE!" An Excludes1 note indicates that the code excluded should never be used at the same time as the code above the Excludes1 note. An Excludes1 is used when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
This note appears immediately under a three character code title to further define, or give examples of, the content of the category.
motorized tricycle
motorized rickshaw
three-wheeled motor car
Type 1 Excludes
A type 1 excludes note is a pure excludes note. It means "NOT CODED HERE!" An Excludes1 note indicates that the code excluded should never be used at the same time as the code above the Excludes1 note. An Excludes1 is used when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
This note appears immediately under a three character code title to further define, or give examples of, the content of the category.
a four-wheeled motor vehicle designed primarily for carrying passengers
automobile (pulling a trailer or camper)
Type 1 Excludes
A type 1 excludes note is a pure excludes note. It means "NOT CODED HERE!" An Excludes1 note indicates that the code excluded should never be used at the same time as the code above the Excludes1 note. An Excludes1 is used when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
This note appears immediately under a three character code title to further define, or give examples of, the content of the category.
a four or six wheel motor vehicle designed primarily for carrying passengers and property but weighing less than the local limit for classification as a heavy goods vehicle
minibus
minivan
sport utility vehicle (SUV)
truck
van
Type 1 Excludes
A type 1 excludes note is a pure excludes note. It means "NOT CODED HERE!" An Excludes1 note indicates that the code excluded should never be used at the same time as the code above the Excludes1 note. An Excludes1 is used when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
This note appears immediately under a three character code title to further define, or give examples of, the content of the category.
18 wheeler
armored car
panel truck
Type 1 Excludes
A type 1 excludes note is a pure excludes note. It means "NOT CODED HERE!" An Excludes1 note indicates that the code excluded should never be used at the same time as the code above the Excludes1 note. An Excludes1 is used when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
This note appears immediately under a three character code title to further define, or give examples of, the content of the category.
motorcoach
Type 1 Excludes
A type 1 excludes note is a pure excludes note. It means "NOT CODED HERE!" An Excludes1 note indicates that the code excluded should never be used at the same time as the code above the Excludes1 note. An Excludes1 is used when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
A type 1 excludes note is a pure excludes note. It means "NOT CODED HERE!" An Excludes1 note indicates that the code excluded should never be used at the same time as the code above the Excludes1 note. An Excludes1 is used when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
military aircraft accidents in military or war operations Y36Y37
A type 1 excludes note is a pure excludes note. It means "NOT CODED HERE!" An Excludes1 note indicates that the code excluded should never be used at the same time as the code above the Excludes1 note. An Excludes1 is used when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
A type 1 excludes note is a pure excludes note. It means "NOT CODED HERE!" An Excludes1 note indicates that the code excluded should never be used at the same time as the code above the Excludes1 note. An Excludes1 is used when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
A type 2 excludes note represents "Not included here". An excludes2 note indicates that the condition excluded is not part of the condition represented by the code, but a patient may have both conditions at the same time. When an Excludes2 note appears under a code, it is acceptable to use both the code and the excluded code together, when appropriate.
A type 1 excludes note is a pure excludes note. It means "NOT CODED HERE!" An Excludes1 note indicates that the code excluded should never be used at the same time as the code above the Excludes1 note. An Excludes1 is used when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
A type 1 excludes note is a pure excludes note. It means "NOT CODED HERE!" An Excludes1 note indicates that the code excluded should never be used at the same time as the code above the Excludes1 note. An Excludes1 is used when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
Toxic effect of contact with venomous animals and plants T63
A type 1 excludes note is a pure excludes note. It means "NOT CODED HERE!" An Excludes1 note indicates that the code excluded should never be used at the same time as the code above the Excludes1 note. An Excludes1 is used when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
accidental drowning and submersion due to fall into water W16
accidental drowning and submersion due to water transport accident V90V92
Type 2 Excludes
A type 2 excludes note represents "Not included here". An excludes2 note indicates that the condition excluded is not part of the condition represented by the code, but a patient may have both conditions at the same time. When an Excludes2 note appears under a code, it is acceptable to use both the code and the excluded code together, when appropriate.
accidental drowning and submersion due to cataclysm X34X39
A type 1 excludes note is a pure excludes note. It means "NOT CODED HERE!" An Excludes1 note indicates that the code excluded should never be used at the same time as the code above the Excludes1 note. An Excludes1 is used when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
exposure to:
failure in dosage of radiation or temperature during surgical and medical care Y63.2Y63.5
A type 1 excludes note is a pure excludes note. It means "NOT CODED HERE!" An Excludes1 note indicates that the code excluded should never be used at the same time as the code above the Excludes1 note. An Excludes1 is used when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
A type 2 excludes note represents "Not included here". An excludes2 note indicates that the condition excluded is not part of the condition represented by the code, but a patient may have both conditions at the same time. When an Excludes2 note appears under a code, it is acceptable to use both the code and the excluded code together, when appropriate.
A type 1 excludes note is a pure excludes note. It means "NOT CODED HERE!" An Excludes1 note indicates that the code excluded should never be used at the same time as the code above the Excludes1 note. An Excludes1 is used when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
These terms are the conditions for which that code is to be used. The terms may be synonyms of the code title, or, in the case of "other specified" codes, the terms are a list of the various conditions assigned to that code. The inclusion terms are not necessarily exhaustive. Additional terms found only in the Alphabetic Index may also be assigned to a code.
This note appears immediately under a three character code title to further define, or give examples of, the content of the category.
homicide
injuries inflicted by another person with intent to injure or kill, by any means
Type 1 Excludes
A type 1 excludes note is a pure excludes note. It means "NOT CODED HERE!" An Excludes1 note indicates that the code excluded should never be used at the same time as the code above the Excludes1 note. An Excludes1 is used when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
These terms are the conditions for which that code is to be used. The terms may be synonyms of the code title, or, in the case of "other specified" codes, the terms are a list of the various conditions assigned to that code. The inclusion terms are not necessarily exhaustive. Additional terms found only in the Alphabetic Index may also be assigned to a code.
Undetermined intent is only for use when there is specific documentation in the record that the intent of the injury cannot be determined. If no such documentation is present, code to accidental (unintentional)
This note appears immediately under a three character code title to further define, or give examples of, the content of the category.
complications of medical devices
surgical and 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
A type 1 excludes note is a pure excludes note. It means "NOT CODED HERE!" An Excludes1 note indicates that the code excluded should never be used at the same time as the code above the Excludes1 note. An Excludes1 is used when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
surgical and medical procedures as the cause of abnormal reaction of the patient, without mention of misadventure at the time of the procedure Y83Y84
Type 2 Excludes
A type 2 excludes note represents "Not included here". An excludes2 note indicates that the condition excluded is not part of the condition represented by the code, but a patient may have both conditions at the same time. When an Excludes2 note appears under a code, it is acceptable to use both the code and the excluded code together, when appropriate.
breakdown or malfunctioning of medical device during procedure after implantation ongoing use Y70Y82
This note appears immediately under a three character code title to further define, or give examples of, the content of the category.
breakdown or malfunction of medical devices (during use) (after implantation) (ongoing use)
Type 2 Excludes
A type 2 excludes note represents "Not included here". An excludes2 note indicates that the condition excluded is not part of the condition represented by the code, but a patient may have both conditions at the same time. When an Excludes2 note appears under a code, it is acceptable to use both the code and the excluded code together, when appropriate.
later complications following use of medical devices without breakdown or malfunctioning of device Y83Y84
misadventure to patients during surgical and medical care, classifiable to Y62Y69
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 Y83Y84
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)
A type 1 excludes note is a pure excludes note. It means "NOT CODED HERE!" An Excludes1 note indicates that the code excluded should never be used at the same time as the code above the Excludes1 note. An Excludes1 is used when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
misadventures to patients during surgical and medical care, classifiable to Y62Y69
Type 2 Excludes
A type 2 excludes note represents "Not included here". An excludes2 note indicates that the condition excluded is not part of the condition represented by the code, but a patient may have both conditions at the same time. When an Excludes2 note appears under a code, it is acceptable to use both the code and the excluded code together, when appropriate.
breakdown or malfunctioning of medical device after implantation during procedure ongoing use Y70Y82
