ICD-10-CM > V00-Y99 > W20-W49 > W33 > W33.0 > W33.00 W33.00 Accidental discharge of unspecified larger firearm Non-Billable/Non-Specific Applicable To Discharge of unspecified larger firearm NOS Codes W33.00XA..., initial encounterW33.00XD..., subsequent encounterW33.00XS..., sequela