#### and mortality (V01-Y98)
This chapter, which in previous revisions of ICD constituted
a supplementary classification, permits the classification of
environmental events and circumstances as the cause of
injury, poisoning and other adverse effects. Where a code
from this section is applicable, it is intended that it shall be
used in addition to a code from another chapter of the
Classification indicating the nature of the condition. Most
often, the condition will be classifiable to Chapter XIX,
Injury, poisoning and certain other consequences of external
causes (S00-T98). Causes of death should preferably be
tabulated according to both Chapter XIX and Chapter XX,
but if only one code is tabulated then the code from Chapter
XX should be used in preference. 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 XX should be used to provide additional information
for multiple-condition analysis only.

Categories for sequelae of external causes of morbidity and
mortality are included at Y85-Y89.

**This chapter contains the following blocks:**

V01-X59 Accidents

V01-V99 Transport accidents
V01-V09 Pedestrian injured in transport
accident

V10-V19 Pedal cyclist 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-X59 Other external causes of accidental injury
W00-W19 Falls
W20-W49 Exposure to inanimate mechanical

forces

W50-W64 Exposure to animate mechanical

forces

W65-W74 Accidental drowning and

submersion

W75-W84 Other accidental threats to

breathing

W85-W99 Exposure to electric current,

radiation and extreme ambient air