W33.13XD ICD-10-CM Code: Accidental malfunction of machine gun, subsequent encounter
Billing Status: YES. This is a valid, specific, and billable ICD-10-CM reference.
Code Set: Valid FY2026 and FY2027. FY2026 took effect October 1, 2025.
Official Registry Overview & Definition
Accidental malfunction of machine gun, subsequent encounter is a billable ICD-10-CM diagnosis code (W33.13D).
Official Tabular Instructional Notes
Sequencing, inclusion, and exclusion notes published for W33.13XD in the official ICD-10-CM tabular list.
Includes
Conditions the official ICD-10-CM tabular list includes under this code.
- rifle, shotgun and larger firearm discharge and malfunction NOS
Inclusion Terms
Alternative terms the tabular list files under this code.
- Malfunction of machine gun NOS
Excludes1 — Not Coded Here
Conditions that can never be reported with this code; the two are mutually exclusive.
- 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)
- assault (X92-Y09)
- contact or collision with animals or persons (W50-W64)
- exposure to inanimate mechanical forces involving military or war operations (Y36.-, Y37.-)
- intentional self-harm (X71-X83)
Frequently Asked Questions (FAQ) & Clinical Guidance
Does W33.13XD require a 7th character?
Yes. The appropriate 7th character is to be added to each code from category W33.
Nearest Codes in This Family
Official ICD-10-CM classifications closest to W33.13XD in its code family, with their registry titles.
- W33.12 — Accidental malfunction of hunting rifle
- W33.12XA — Accidental malfunction of hunting rifle, initial encounter
- W33.12XD — Accidental malfunction of hunting rifle, subsequent encounter
- W33.12XS — Accidental malfunction of hunting rifle, sequela
- W33.13 — Accidental malfunction of machine gun
- W33.13XA — Accidental malfunction of machine gun, initial encounter
- W33.13XS — Accidental malfunction of machine gun, sequela
- W33.19 — Accidental malfunction of other larger firearm
- W33.19XA — Accidental malfunction of other larger firearm, initial encounter
- W33.19XD — Accidental malfunction of other larger firearm, subsequent encounter