W33 is a non-billable/non-specific diagnosis code from the 2025 ICD-10-CM used to classify the following condition: Accidental rifle, shotgun and larger firearm discharge and malfunction.
Includes
Rifle, shotgun and larger firearm discharge and malfunction NOS
Type 1 excludes
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)
Seventh character note
The appropriate 7th character is to be added to each code from category W33
Seventh character extensions
A: initial encounter
D: subsequent encounter
S: sequela
Codes
Versions
2025
No changes
2024
No changes
2023
No changes
2022
No changes
2021
No changes
2020
No changes
2019
No changes
2018
No changes
2017
No changes
2016
New code