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