Excludes1

  • assault (X92-Y09)
  • contact or collision with animals or persons (W50-W64)
  • exposure to inanimate mechanical forces involving military or war operations (Y36.-, Y37.-)
  • intentional self-harm (X71-X83)
  1. W33 Accidental rifle, shotgun and larger firearm discharge and malfunction

    Includes:

    • rifle, shotgun and larger firearm discharge and malfunction NOS

    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)

    The appropriate 7th character is to be added to each code from category W33

    • A - initial encounter
    • D - subsequent encounter
    • S - sequela
    1. W33.0 Accidental rifle, shotgun and larger firearm discharge

      1. W33.00 Accidental discharge of unspecified larger firearm

        Inclusion term(s):

        • Discharge of unspecified larger firearm NOS
      2. W33.01 Accidental discharge of shotgun

        Inclusion term(s):

        • Discharge of shotgun NOS
      3. W33.02 Accidental discharge of hunting rifle

        Inclusion term(s):

        • Discharge of hunting rifle NOS
      4. W33.03 Accidental discharge of machine gun

        Inclusion term(s):

        • Discharge of machine gun NOS
      5. W33.09 Accidental discharge of other larger firearm

        Inclusion term(s):

        • Discharge of other larger firearm NOS
    2. W33.1 Accidental rifle, shotgun and larger firearm malfunction

      Inclusion term(s):

      • Injury due to explosion of rifle, shotgun and larger firearm (parts)
      • Injury due to malfunction of mechanism or component of rifle, shotgun and larger firearm
      • Injury due to piercing, cutting, crushing or pinching due to (by) slide trigger mechanism, scope or other gun part
      • Injury due to recoil of rifle, shotgun and larger firearm
      • Powder burn from rifle, shotgun and larger firearm
      1. W33.10 Accidental malfunction of unspecified larger firearm

        Inclusion term(s):

        • Malfunction of unspecified larger firearm NOS
      2. W33.11 Accidental malfunction of shotgun

        Inclusion term(s):

        • Malfunction of shotgun NOS
      3. W33.12 Accidental malfunction of hunting rifle

        Inclusion term(s):

        • Malfunction of hunting rifle NOS
      4. W33.13 Accidental malfunction of machine gun

        Inclusion term(s):

        • Malfunction of machine gun NOS
      5. W33.19 Accidental malfunction of other larger firearm

        Inclusion term(s):

        • Malfunction of other larger firearm NOS
Abbreviations used here:

NEC Not elsewhere classifiable
This abbreviation in the Tabular List represents “other specified”. When a specific code is not available for a condition, the Tabular List includes an NEC entry under a code to identify the code as the “other specified” code.

NOS Not otherwise specified
This abbreviation is the equivalent of unspecified.