ICD-10-CM > S00-T88 > S80-S89 > S84 > S84.1 > S84.12 S84.12 Injury of peroneal nerve at lower leg level, left leg Non-Billable/Non-Specific Codes S84.12XA..., initial encounterS84.12XD..., subsequent encounterS84.12XS..., sequela