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W34.11

W34.11Accidental malfunction of gas, air or spring-operated guns

Non-billable headerICD-10-CM

W34.11 is a non-billable header ICD-10-CM code for accidental malfunction of gas, air or spring-operated guns. It cannot be billed on its own: choose one of the more specific child codes below. This code also requires a 7th character before it is complete.

This code requires a 7th character

The appropriate 7th character is to be added to each code from category W34

A
initial encounter
D
subsequent encounter
S
sequela

Other codes that can never be billed with W34.11

These codes carry an Excludes1 note pointing at W34.11. The conflict binds both ways, but ICD-10-CM only writes it down on one side — so you would not find this by reading W34.11 alone.

  • W32Accidental handgun discharge and malfunction
  • W33Accidental rifle, shotgun and larger firearm discharge and malfunction

Risk adjustment

W34.11 does not map to an HCC and does not risk-adjust under CMS-HCC V28. That is normal — most ICD-10 codes do not. It still needs to be coded correctly; it just will not move a RAF score.

Code to one of these instead W34.11

3 child codes. Green means billable.

Related codes at this level

Codes that share W34.1. If W34.11 is not quite right, the correct code is usually one of these.

Questions about W34.11

Is W34.11 a billable ICD-10-CM code?
No. W34.11 is a non-billable header code. Code to a higher level of specificity using one of its child codes.
Where does W34.11 sit in the tabular list?
External causes of morbidity (V00-Y99), in the block Exposure to inanimate mechanical forces (W20-W49).
ICD-10-CMFY2026-Apr· effective April 1, 2026

Loaded directly from the CMS/NCHS ICD-10-CM public-domain release — see data sources and our editorial policy. If this page disagrees with the CMS tabular list, this page is wrong. Reference information for professional coders; not medical or billing advice.