U.S. category index · FY 2027

W ICD-10-CM Categories: Category Index

Browse 73 top-level ICD-10-CM categories beginning with W, then follow their complete FY 2027 child-code hierarchies.

Complete category list

Categories beginning with W

Open a category to continue through its complete hierarchy of more specific codes.

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

W04

Fall while being carried or supported by other persons

W05

Fall from non-moving wheelchair, nonmotorized scooter and motorized mobility scooter

W06

Fall from bed

W07

Fall from chair

W08

Fall from other furniture

W09

Fall on and from playground equipment

W10

Fall on and from stairs and steps

W11

Fall on and from ladder

W12

Fall on and from scaffolding

W13

Fall from, out of or through building or structure

W14

Fall from tree

W15

Fall from cliff

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

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

W26

Contact with other sharp objects

W27

Contact with nonpowered hand tool

W28

Contact with powered lawn mower

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

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

W39

Discharge of firework

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

W52

Crushed, pushed or stepped on by crowd or human stampede

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

W58

Contact with crocodile or alligator

W59

Contact with other nonvenomous reptiles

W60

Contact with nonvenomous plant thorns and spines and sharp leaves

W61

Contact with birds (domestic) (wild)

W62

Contact with nonvenomous amphibians

W64

Exposure to other animate mechanical forces

W65

Accidental drowning and submersion while in bath-tub

W67

Accidental drowning and submersion while in swimming-pool

W69

Accidental drowning and submersion while in natural water

W73

Other specified cause of accidental non-transport drowning and submersion

W74

Unspecified cause of accidental drowning and submersion

W85

Exposure to electric transmission lines

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

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

Transparency

Source and release

Data release

U.S. ICD-10-CM · FY 2027

Effective date

Oct 1, 2026

This category index is generated from Vero’s repository-backed ICD-10-CM hierarchy. Every listed category is a top-level record, and each linked category page exposes its direct child codes.

Review the CDC/NCHS ICD-10-CM source

Category navigation

Frequently asked questions

Which ICD-10-CM categories begin with W?

This index lists 73 top-level categories beginning with W from Vero’s FY 2027 U.S. ICD-10-CM reference dataset.

How do I find a more specific W code?

Open a category below, then follow its linked child-code hierarchy until you reach the code supported by the documentation.

Which ICD-10-CM release does this W index use?

The index uses the FY 2027 U.S. ICD-10-CM release and the repository-backed hierarchy displayed on each linked code page.

Is every W category billable?

No. These are top-level categories used for navigation. Follow the hierarchy to a sufficiently specific code and confirm the active code set, official guidance, and payer requirements.

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