ICD-10-CM > S00-T88 > S50-S59 > S55 > S55.9 > S55.91 S55.91 Laceration of unspecified blood vessel at forearm level Non-Billable/Non-Specific Codes S55.911Laceration of unspecified blood vessel at forearm level, right armS55.911A..., initial encounterS55.911D..., subsequent encounterS55.911S..., sequelaS55.912Laceration of unspecified blood vessel at forearm level, left armS55.912A..., initial encounterS55.912D..., subsequent encounterS55.912S..., sequelaS55.919Laceration of unspecified blood vessel at forearm level, unspecified armS55.919A..., initial encounterS55.919D..., subsequent encounterS55.919S..., sequela