ICD-10-CM > S00-T88 > S50-S59 > S55 > S55.8 > S55.80 > S55.809 S55.809 Unspecified injury of other blood vessels at forearm level, unspecified arm Non-Billable/Non-Specific Codes S55.809A..., initial encounterS55.809D..., subsequent encounterS55.809S..., sequela