ICD-10-CM > V00-Y99 > W20-W49 > W33 > W33.1 > W33.19 W33.19 Accidental malfunction of other larger firearm Non-Billable/Non-Specific Applicable To Malfunction of other larger firearm NOS Codes W33.19XA..., initial encounterW33.19XD..., subsequent encounterW33.19XS..., sequela