ICD-10-CM > S00-T88 > S80-S89 > S85 > S85.1 > S85.16 > S85.161 S85.161 Unspecified injury of posterior tibial artery, right leg Non-Billable/Non-Specific Codes S85.161A..., initial encounterS85.161D..., subsequent encounterS85.161S..., sequela