All ICD10 Codes

W33

Non-Billable
ChapterV00–Y99
Rankcategory
Official Description

Accidental rifle, shotgun and larger firearm discharge and malfunction

Use a more specific code (0 billable, 2 non-billable)
W33.0Accidental rifle, shotgun and larger firearm dischargehas subcodesW33.1Accidental rifle, shotgun and larger firearm malfunctionhas subcodes
Metadata & Insights
  • •Non-billable category (requires more specific sub-code).
  • •Chapter 20: External Causes of Morbidity (V00-Y99).

W20-W49 Parent Instructions

Excludes1(Not coded here. Use a different code.)
  • 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)

Instructional Notes

Includes
  • rifle, shotgun and larger firearm discharge and malfunction NOS
Excludes1(Not coded here. Use a different code.)
  • 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)

Clinical Hierarchy

BillableHas subcodes
CH20External causes of morbidity (V00-Y99)
W20-W49Exposure to inanimate mechanical forces (W20-W49)
W33Accidental rifle, shotgun and larger firearm discharge and malfunctionNot billable
W33.0Accidental rifle, shotgun and larger firearm dischargeSubcodes
W33.1Accidental rifle, shotgun and larger firearm malfunctionSubcodes

Applicable Ancestor Context

The following parent sections contain instructions or notes that apply to W33:

blockW20-W49
Exposure to inanimate mechanical forces (W20-W49)
View context instructions

MS-DRG Classification

2026

No direct MS-DRG triggers identified.

Cross Reference

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