ICDwise
W32 ⚠ Non-billable

Accidental handgun discharge and malfunction

ICD-10-CM · FY2026 · External Causes of Morbidity

Code
W32
System
ICD-10-CM
Billable
No — use specific code
Effective
FY2026
Chapter
External Causes of Morbidity
Source
CMS / CDC NCHS
⚠ Verify before billing. Confirm against the current CMS/NCHS ICD-10-CM files and your payer's rules before claims submission.

Official coding notes

From CMS's ICD-10-CM Tabular List.

Includes
  • accidental discharge and malfunction of gun for single hand use
  • accidental discharge and malfunction of pistol
  • accidental discharge and malfunction of revolver
  • Handgun discharge and malfunction NOS
Excludes1 — never code together
  • accidental airgun discharge and malfunction (W34.010, W34.110)
  • accidental BB gun discharge and malfunction (W34.010, W34.110)
  • accidental pellet gun discharge and malfunction (W34.010, W34.110)
  • accidental shotgun discharge and malfunction (W33.01, W33.11)
  • assault by handgun discharge (X93)
  • handgun discharge involving legal intervention (Y35.0-)
  • handgun discharge involving military or war operations (Y36.4-)
  • intentional self-harm by handgun discharge (X72)
  • Very pistol discharge and malfunction (W34.09, W34.19)
7th character
  • The appropriate 7th character is to be added to each code from category W32

Frequently asked questions

What is ICD-10 code W32?
ICD-10-CM code W32 represents Accidental handgun discharge and malfunction. It is a non-billable header code requiring a more specific subcategory in the External Causes of Morbidity chapter, effective October 1, 2025 – September 30, 2026.
Is W32 billable?
No. W32 is a non-billable header. Select a more specific subcategory for claims submission.
What chapter is W32 in?
W32 belongs to the External Causes of Morbidity chapter (V00–Y99) of ICD-10-CM.

Related codes in the W32 category

W32.0 Accidental handgun discharge Non-billable W32.1 Accidental handgun malfunction Non-billable W32.0XXA Accidental handgun discharge, initial encounter Billable W32.0XXD Accidental handgun discharge, subsequent encounter Billable W32.0XXS Accidental handgun discharge, sequela Billable W32.1XXA Accidental handgun malfunction, initial encounter Billable W32.1XXD Accidental handgun malfunction, subsequent encounter Billable W32.1XXS Accidental handgun malfunction, sequela Billable

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