ICD-10-CM > S00-T88 > S70-S79 > S76 > S76.3 > S76.39 > S76.391 S76.391 Other specified injury of muscle, fascia and tendon of the posterior muscle group at thigh level, right thigh Non-Billable/Non-Specific Codes S76.391A..., initial encounterS76.391D..., subsequent encounterS76.391S..., sequela