W33 — Accidental rifle, shotgun and larger firearm discharge and malfunction
Is W33 billable?
No — W33 is a non-billable header code. W33 groups more specific codes and cannot be submitted on a claim. A valid ICD-10-CM code must be reported at the highest level of specificity available in its branch. Select one of the 30 billable codes beneath W33.
Billable codes under this header
- 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
W33 at a glance
| Code | W33 |
|---|---|
| Description | Accidental rifle, shotgun and larger firearm discharge and malfunction |
| Billable | No — header code |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
Excludes1 — never code together
The conditions below can never be reported together with W33 on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.
- 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)
Includes
Conditions classified to W33.
- rifle, shotgun and larger firearm discharge and malfunction NOS
Excludes1 — never code together — inherited from W20-W49
The conditions below can never be reported together with W33 on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.
What codes fall under W33? (2)
How long has W33 existed?
W33 has been in ICD-10-CM since at least FY2016, the earliest fiscal year on record here.
Derived from the official order files for FY2016–FY2026. FY2017 and FY2020 publish no order file, so those years are not covered.