| W33.0 | Accidental rifle, shotgun and larger firearm discharge | NON-BILLABLE CODE |
| W33.00 | Accidental discharge of unspecified larger firearm | NON-BILLABLE CODE |
| W33.00XA | Accidental discharge of unspecified larger firearm, initial encounter | BILLABLE CODE |
| W33.00XD | Accidental discharge of unspecified larger firearm, subsequent encounter | BILLABLE CODE |
| W33.00XS | Accidental discharge of unspecified larger firearm, sequela | BILLABLE CODE |
| W33.01 | Accidental discharge of shotgun | NON-BILLABLE CODE |
| W33.01XA | Accidental discharge of shotgun, initial encounter | BILLABLE CODE |
| W33.01XD | Accidental discharge of shotgun, subsequent encounter | BILLABLE CODE |
| W33.01XS | Accidental discharge of shotgun, sequela | BILLABLE CODE |
| W33.02 | Accidental discharge of hunting rifle | NON-BILLABLE CODE |
| W33.02XA | Accidental discharge of hunting rifle, initial encounter | BILLABLE CODE |
| W33.02XD | Accidental discharge of hunting rifle, subsequent encounter | BILLABLE CODE |
| W33.02XS | Accidental discharge of hunting rifle, sequela | BILLABLE CODE |
| W33.03 | Accidental discharge of machine gun | NON-BILLABLE CODE |
| W33.03XA | Accidental discharge of machine gun, initial encounter | BILLABLE CODE |
| W33.03XD | Accidental discharge of machine gun, subsequent encounter | BILLABLE CODE |
| W33.03XS | Accidental discharge of machine gun, sequela | BILLABLE CODE |
| W33.09 | Accidental discharge of other larger firearm | NON-BILLABLE CODE |
| W33.09XA | Accidental discharge of other larger firearm, initial encounter | BILLABLE CODE |
| W33.09XD | Accidental discharge of other larger firearm, subsequent encounter | BILLABLE CODE |
| W33.09XS | Accidental discharge of other larger firearm, sequela | BILLABLE CODE |
| W33.1 | Accidental rifle, shotgun and larger firearm malfunction | NON-BILLABLE CODE |
| W33.10 | Accidental malfunction of unspecified larger firearm | NON-BILLABLE CODE |
| W33.10XA | Accidental malfunction of unspecified larger firearm, initial encounter | BILLABLE CODE |
| W33.10XD | Accidental malfunction of unspecified larger firearm, subsequent encounter | BILLABLE CODE |
| W33.10XS | Accidental malfunction of unspecified larger firearm, sequela | BILLABLE CODE |
| W33.11 | Accidental malfunction of shotgun | NON-BILLABLE CODE |
| W33.11XA | Accidental malfunction of shotgun, initial encounter | BILLABLE CODE |
| W33.11XD | Accidental malfunction of shotgun, subsequent encounter | BILLABLE CODE |
| W33.11XS | Accidental malfunction of shotgun, sequela | BILLABLE CODE |
| W33.12 | Accidental malfunction of hunting rifle | NON-BILLABLE CODE |
| W33.12XA | Accidental malfunction of hunting rifle, initial encounter | BILLABLE CODE |
| W33.12XD | Accidental malfunction of hunting rifle, subsequent encounter | BILLABLE CODE |
| W33.12XS | Accidental malfunction of hunting rifle, sequela | BILLABLE CODE |
| W33.13 | Accidental malfunction of machine gun | NON-BILLABLE CODE |
| W33.13XA | Accidental malfunction of machine gun, initial encounter | BILLABLE CODE |
| W33.13XD | Accidental malfunction of machine gun, subsequent encounter | BILLABLE CODE |
| W33.13XS | Accidental malfunction of machine gun, sequela | BILLABLE CODE |
| W33.19 | Accidental malfunction of other larger firearm | NON-BILLABLE CODE |
| W33.19XA | Accidental malfunction of other larger firearm, initial encounter | BILLABLE CODE |
| W33.19XD | Accidental malfunction of other larger firearm, subsequent encounter | BILLABLE CODE |
| W33.19XS | Accidental malfunction of other larger firearm, sequela | BILLABLE CODE |
