W33Header code — not billable
Accidental rifle, shotgun and larger firearm discharge and malfunction
Short description: Acc rifle, shotgun and larger firearm discharge and malfunct
- Chapter
- 20. External causes of morbidity
- Category
- W33
- Effective date
- October 1, 2026
Related codes in category W33
W33.0Accidental rifle, shotgun and larger firearm dischargeW33.00Accidental discharge of unspecified larger firearmW33.00XAAccidental discharge of unsp larger firearm, init encntrYesW33.00XDAccidental discharge of unsp larger firearm, subs encntrYesW33.00XSAccidental discharge of unspecified larger firearm, sequelaYesW33.01Accidental discharge of shotgunW33.01XAAccidental discharge of shotgun, initial encounterYesW33.01XDAccidental discharge of shotgun, subsequent encounterYesW33.01XSAccidental discharge of shotgun, sequelaYesW33.02Accidental discharge of hunting rifleW33.02XAAccidental discharge of hunting rifle, initial encounterYesW33.02XDAccidental discharge of hunting rifle, subsequent encounterYes
Frequently asked questions
What is ICD-10 code W33?
W33 is an ICD-10-CM diagnosis code for Accidental rifle, shotgun and larger firearm discharge and malfunction.
Is W33 a billable code?
No. W33 is a category/header code, not billable on its own — use one of its more specific child codes instead.
What ICD-10-CM chapter is W33 in?
W33 falls under Chapter 20: External causes of morbidity.
When did W33 become effective?
W33 has been effective since October 1, 2026, per the CMS/CDC ICD-10-CM annual release.
What other codes are related to W33?
W33 belongs to category W33, which includes 12 other codes — see the related codes list on this page.
ICD-10-CM data maintained by CDC/CMS (public domain). Always verify codes with authoritative sources before making coding or billing decisions.