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W33 Accidental rifle, shotgun and larger firearm discharge and malfunction

Back W33.0Accidental rifle, shotgun and larger firearm dischargeCategory5 →W33.00Accidental discharge of unspecified larger firearmCategory W33.01Accidental discharge of shotgunCategory W33.02Accidental discharge of hunting rifleCategory W33.03Accidental discharge of machine gunCategory W33.09Accidental discharge of other larger firearmCategory W33.1Accidental rifle, shotgun and larger firearm malfunctionCategory5 →W33.10Accidental malfunction of unspecified larger firearmCategory W33.11Accidental malfunction of shotgunCategory W33.12Accidental malfunction of hunting rifleCategory W33.13Accidental malfunction of machine gunCategory W33.19Accidental malfunction of other larger firearmCategory

Category

W33

Accidental rifle, shotgun and larger firearm discharge and malfunction

INCLUDES

rifle, shotgun and larger firearm discharge and malfunction NOS

EXCLUDES

Excludes1: 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)

NOTE

7th character: The appropriate 7th character is to be added to each code from category W33
7th character definitions: initial encounter
subsequent encounter
sequela

Chapter: XX · External causes of morbidity
Section: W20-W49
Valid from

Source

CMS ICD-10-CM Tabular List, edition FY2026.

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