ICD-10-CM > S00-T88 > S80-S89 > S85 > S85.1 > S85.16 > S85.169 S85.169 Unspecified injury of posterior tibial artery, unspecified leg Non-Billable/Non-Specific Codes S85.169A..., initial encounterS85.169D..., subsequent encounterS85.169S..., sequela