ICD-10-CM · Chapter 20 · V00-Y99
W33 Accidental rifle, shotgun and larger firearm discharge and malfunction
Includes
- rifle, shotgun and larger firearm discharge and malfunction NOS
Excludes 1 (cannot be coded together)
- accidental airgun discharge and malfunction (W34.010, W34.110)
- accidental BB gun discharge and malfunction (W34.010, W34.110)
- accidental handgun discharge and malfunction (W32.-)
- accidental pellet gun discharge and malfunction (W34.010, W34.110)
- assault by rifle, shotgun and larger firearm discharge (X94)
- firearm discharge involving legal intervention (Y35.0-)
- firearm discharge involving military or war operations (Y36.4-)
- intentional self-harm by rifle, shotgun and larger firearm discharge (X73)
Subcodes
Subcodes are listed below for reference. Detail pages are not available for chapters 11–22.
| Code | Description | Billable |
|---|---|---|
| W33..0 | Accidental rifle, shotgun and larger firearm discharge | No |
| W33..00 | Accidental discharge of unspecified larger firearm | No |
| W33..01 | Accidental discharge of shotgun | No |
| W33..02 | Accidental discharge of hunting rifle | No |
| W33..03 | Accidental discharge of machine gun | No |
| W33..09 | Accidental discharge of other larger firearm | No |
| W33..1 | Accidental rifle, shotgun and larger firearm malfunction | No |
| W33..10 | Accidental malfunction of unspecified larger firearm | No |
| W33..11 | Accidental malfunction of shotgun | No |
| W33..12 | Accidental malfunction of hunting rifle | No |
| W33..13 | Accidental malfunction of machine gun | No |
| W33..19 | Accidental malfunction of other larger firearm | No |
Last reviewed: September 2026