Coding and coverage · ICD-10-CM

W32

W32.0 Accidental handgun discharge

Not billable (header)Chapter 20

This code needs a 7th character (use X as a placeholder for missing characters).

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Codes under this one

  • W32.0XXA Accidental handgun discharge, initial encounter
  • W32.0XXD Accidental handgun discharge, subsequent encounter
  • W32.0XXS Accidental handgun discharge, sequela

Instructional notes

Chapter 20

Notes
  • This chapter permits the classification of environmental events and circumstances as the cause of injury, and other adverse effects. Where a code from this section is applicable, it is intended that it shall be used secondary to a code from another chapter of the Classification indicating the nature of the condition. Most often, the condition will be classifiable to Chapter 19, Injury, poisoning and certain other consequences of external causes (S00-T88). Other conditions that may be stated to be due to external causes are classified in Chapters I to XVIII. For these conditions, codes from Chapter 20 should be used to provide additional information as to the cause of the condition.

W32

Excludes1Not coded here: never report with this code, except when the two conditions are unrelated.
  • 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)
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
7th charactersThe appropriate 7th character is to be added to each code from category W32
  • A initial encounter
  • D subsequent encounter
  • S sequela

Chapter 20: External causes of morbidity · V00-X58 Accidents (V00-X58)

Source: ICD-10-CM FY 2027 code descriptions and tabular list (CMS and CDC National Center for Health Statistics), effective 2026-10-01 through 2027-09-30 · CMS ICD-10 files. HCC mapping: CMS-HCC V28, payment year 2027. As of 2026-11-04.

Coverage and payment depend on the claim details; confirm with the Medicare Administrative Contractor.