ICD-10-CM > S00-T88 > S80-S89 > S86 > S86.1 > S86.19 > S86.192 S86.192 Other injury of other muscle(s) and tendon(s) of posterior muscle group at lower leg level, left leg Non-Billable/Non-Specific Codes S86.192A..., initial encounterS86.192D..., subsequent encounterS86.192S..., sequela