ICD-10-CM > S00-T88 > S70-S79 > S76 > S76.3 > S76.31 S76.31 Strain of muscle, fascia and tendon of the posterior muscle group at thigh level Non-Billable/Non-Specific Codes S76.311Strain of muscle, fascia and tendon of the posterior muscle group at thigh level, right thighS76.311A..., initial encounterS76.311D..., subsequent encounterS76.311S..., sequelaS76.312Strain of muscle, fascia and tendon of the posterior muscle group at thigh level, left thighS76.312A..., initial encounterS76.312D..., subsequent encounterS76.312S..., sequelaS76.319Strain of muscle, fascia and tendon of the posterior muscle group at thigh level, unspecified thighS76.319A..., initial encounterS76.319D..., subsequent encounterS76.319S..., sequela