ICD-10-CM Tabular Index · Chapter 20 · FY 2026 W32

Accidental handgun discharge and malfunction (W32) ICD-10-CM

The W32 code range covers accidental handgun discharge and malfunction with 9 ICD-10-CM diagnosis codes. 6 of them are billable and valid for claim submission in fiscal year 2026, and the category headers group them but cannot themselves be billed.

✓ Built from the official CMS FY 2026 datasetEffective Oct 1, 2025 – Sep 30, 2026
9
Diagnosis Codes
6
Billable Codes
W32
Code Range
W20–W49
Parent Section

Includes

This note appears immediately under a three character code title to further define, or give examples of, the content of the category.

Type 1 Excludes

A type 1 excludes note is a pure excludes note. It means "NOT CODED HERE!" An Excludes1 note indicates that the code excluded should never be used at the same time as the code above the Excludes1 note. An Excludes1 is used when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.

7th Character Note

Certain ICD-10-CM categories have applicable 7th characters. The applicable 7th character is required for all codes within the category, or as the notes in the Tabular List instruct. The 7th character must always be the 7th character in the data field. If a code that requires a 7th character is not 6 characters, a placeholder X must be used to fill in the empty characters.

7th Character

Indicates that a seventh character is to be assigned to codes in a subcategory.

ICD-10-CM

Codes in the W32 Range 9 codes · 6 billable

9 of 9 shown
  • W32 Accidental handgun discharge and malfunctionNon-billable
  • W32.0 Accidental handgun dischargeNon-billable
  • W32.0XXA Accidental handgun discharge, initial encounter
  • W32.0XXD Accidental handgun discharge, subsequent encounter
  • W32.0XXS Accidental handgun discharge, sequela
  • W32.1 Accidental handgun malfunctionNon-billable
  • W32.1XXA Accidental handgun malfunction, initial encounter
  • W32.1XXD Accidental handgun malfunction, subsequent encounter
  • W32.1XXS Accidental handgun malfunction, sequela

About the W32 Code Range

The ICD-10 code W32 and its subcategories are used to classify injuries related to accidental handgun discharges and malfunctions. These codes cover incidents ranging from the initial accidental firing of a handgun to later follow-up care.

Specifically, the ICD-10 code W32.0XXA is applied for the initial encounter of an accidental handgun discharge, including accidents caused by pistols, revolvers, or flare guns (Verey pistols). This code helps medical coders identify and document unintentional firearm injuries caused by handguns. Subsequent encounters and complications related to these injuries are coded as W32.0XXD and W32.0XXS, respectively. Separate but related codes in the W32.1 series address accidental handgun malfunctions, distinguishing between first visits (W32.1XXA), follow-up care (W32.1XXD), and resulting sequelae (W32.1XXS). Together, these codes support precise reporting for accidental firearm injuries caused by malfunction or discharge, ensuring clarity in medical records and insurance documentation.

Questions About This Page

How many billable codes are in the W32 range?

Of the 9 codes in this range, 6 are billable and valid for claim submission from October 1, 2025 through September 30, 2026. Category header codes group them but cannot be reported on claims.

What does the W32 range classify?

The range classifies accidental handgun discharge and malfunction. Each code links to its own reference page with billing status, MS-DRG grouping, coding notes, and clinical information.

Related References

Source: CMS FY 2026 ICD-10-CM Tabular List and order file, effective October 1, 2025 through September 30, 2026.