S76.399 - Other specified injury of muscle, fascia and tendon of the posterior muscle group at thigh level, unspecified thigh S76.3 - Injury of muscle, fascia and tendon of the posterior muscle group at thigh level S76.39 - Other specified injury of muscle, fascia and tendon of the posterior muscle group at thigh level S76.399 - Other specified injury of muscle, fascia and tendon of the posterior muscle group at thigh level, unspecified thigh