ICD-10-CM > S00-T88 > S50-S59 > S55 > S55.2 > S55.20 S55.20 Unspecified injury of vein at forearm level Non-Billable/Non-Specific Codes S55.201Unspecified injury of vein at forearm level, right armS55.201A..., initial encounterS55.201D..., subsequent encounterS55.201S..., sequelaS55.202Unspecified injury of vein at forearm level, left armS55.202A..., initial encounterS55.202D..., subsequent encounterS55.202S..., sequelaS55.209Unspecified injury of vein at forearm level, unspecified armS55.209A..., initial encounterS55.209D..., subsequent encounterS55.209S..., sequela