ICD-10-CM category
W33 Rifle, shotgun and larger firearm discharge
W33 is a category, not a billable code. Report one of the 30 complete codes below.
Codes in W33
- W33.00XAAccidental discharge of unspecified larger firearm, initial encounter
- W33.00XDAccidental discharge of unspecified larger firearm, subsequent encounter
- W33.00XSAccidental discharge of unspecified larger firearm, sequela
- W33.01XAAccidental discharge of shotgun, initial encounter
- W33.01XDAccidental discharge of shotgun, subsequent encounter
- W33.01XSAccidental discharge of shotgun, sequela
- W33.02XAAccidental discharge of hunting rifle, initial encounter
- W33.02XDAccidental discharge of hunting rifle, subsequent encounter
- W33.02XSAccidental discharge of hunting rifle, sequela
- W33.03XAAccidental discharge of machine gun, initial encounter
- W33.03XDAccidental discharge of machine gun, subsequent encounter
- W33.03XSAccidental discharge of machine gun, sequela
- W33.09XAAccidental discharge of other larger firearm, initial encounter
- W33.09XDAccidental discharge of other larger firearm, subsequent encounter
- W33.09XSAccidental discharge of other larger firearm, sequela
- W33.10XAAccidental malfunction of unspecified larger firearm, initial encounter
- W33.10XDAccidental malfunction of unspecified larger firearm, subsequent encounter
- W33.10XSAccidental malfunction of unspecified larger firearm, sequela
- W33.11XAAccidental malfunction of shotgun, initial encounter
- W33.11XDAccidental malfunction of shotgun, subsequent encounter
- W33.11XSAccidental malfunction of shotgun, sequela
- W33.12XAAccidental malfunction of hunting rifle, initial encounter
- W33.12XDAccidental malfunction of hunting rifle, subsequent encounter
- W33.12XSAccidental malfunction of hunting rifle, sequela
- W33.13XAAccidental malfunction of machine gun, initial encounter
- W33.13XDAccidental malfunction of machine gun, subsequent encounter
- W33.13XSAccidental malfunction of machine gun, sequela
- W33.19XAAccidental malfunction of other larger firearm, initial encounter
- W33.19XDAccidental malfunction of other larger firearm, subsequent encounter
- W33.19XSAccidental malfunction of other larger firearm, sequela
Outside the US? W33 in the international WHO ICD-10 lists its inclusion and exclusion notes.
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ICD-10-CM is developed by the National Center for Health Statistics (NCHS), Centers for Disease Control and Prevention, U.S. Department of Health and Human Services, and is based on the WHO ICD-10. Codes and titles are reproduced unchanged from the FY2026 code list (effective 1 October 2025). Their use here does not imply endorsement by CDC, HHS or the U.S. Government. Changes effective on or after 1 October 2026 may not be reflected yet; check the current release at cdc.gov or cms.gov before submitting claims.
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