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ICD-10-CM · FY 2026 APRIL UPDATE

W33

Accidental rifle, shotgun and larger firearm discharge and malfunction

Diagnosis reference

Nonbillable category

This entry is a category or subcategory. Choose the appropriate billable descendant based on the clinical documentation.

Effective periodOctober 1, 2026–September 30, 2027
SourceCMS ICD-10-CM order file
ClassificationDiagnosis · clinical modification

Related entries

Up to 30 descendants in this category

CODEDESCRIPTIONTYPE
W33.0Accidental rifle, shotgun and larger firearm dischargeCategory
W33.00Accidental discharge of unspecified larger firearmCategory
W33.00XAAccidental discharge of unspecified larger firearm, initial encounterBillable
W33.00XDAccidental discharge of unspecified larger firearm, subsequent encounterBillable
W33.00XSAccidental discharge of unspecified larger firearm, sequelaBillable
W33.01Accidental discharge of shotgunCategory
W33.01XAAccidental discharge of shotgun, initial encounterBillable
W33.01XDAccidental discharge of shotgun, subsequent encounterBillable
W33.01XSAccidental discharge of shotgun, sequelaBillable
W33.02Accidental discharge of hunting rifleCategory
W33.02XAAccidental discharge of hunting rifle, initial encounterBillable
W33.02XDAccidental discharge of hunting rifle, subsequent encounterBillable
W33.02XSAccidental discharge of hunting rifle, sequelaBillable
W33.03Accidental discharge of machine gunCategory
W33.03XAAccidental discharge of machine gun, initial encounterBillable
W33.03XDAccidental discharge of machine gun, subsequent encounterBillable
W33.03XSAccidental discharge of machine gun, sequelaBillable
W33.09Accidental discharge of other larger firearmCategory
W33.09XAAccidental discharge of other larger firearm, initial encounterBillable
W33.09XDAccidental discharge of other larger firearm, subsequent encounterBillable
W33.09XSAccidental discharge of other larger firearm, sequelaBillable
W33.1Accidental rifle, shotgun and larger firearm malfunctionCategory
W33.10Accidental malfunction of unspecified larger firearmCategory
W33.10XAAccidental malfunction of unspecified larger firearm, initial encounterBillable
W33.10XDAccidental malfunction of unspecified larger firearm, subsequent encounterBillable
W33.10XSAccidental malfunction of unspecified larger firearm, sequelaBillable
W33.11Accidental malfunction of shotgunCategory
W33.11XAAccidental malfunction of shotgun, initial encounterBillable
W33.11XDAccidental malfunction of shotgun, subsequent encounterBillable
W33.11XSAccidental malfunction of shotgun, sequelaBillable

Use the complete reference

This reference does not reproduce the full tabular hierarchy, inclusion notes, Excludes1/2 notes, sequencing instructions, or seventh-character rules. Review the official tables and coding guidelines.

Open official CMS files

ICD-10-CM codes describe diagnoses. They do not have an independent Medicare PFS reimbursement amount, and billability alone does not establish coverage.