ICD-10-CM > S00-T88 > S50-S59 > S55 > S55.8 > S55.89 > S55.899 S55.899 Other specified injury of other blood vessels at forearm level, unspecified arm Non-Billable/Non-Specific Codes S55.899A..., initial encounterS55.899D..., subsequent encounterS55.899S..., sequela