ICD-10-CM > S00-T88 > S80-S89 > S86 > S86.8 > S86.80 > S86.801 S86.801 Unspecified injury of other muscle(s) and tendon(s) at lower leg level, right leg Non-Billable/Non-Specific Codes S86.801A..., initial encounterS86.801D..., subsequent encounterS86.801S..., sequela