ICD-10-CM > S00-T88 > S80-S89 > S86 > S86.3 > S86.30 > S86.301 S86.301 Unspecified injury of muscle(s) and tendon(s) of peroneal muscle group at lower leg level, right leg Non-Billable/Non-Specific Codes S86.301A..., initial encounterS86.301D..., subsequent encounterS86.301S..., sequela