S86.31 - Strain of muscle(s) and tendon(s) of peroneal muscle group at lower leg level S86.3 - Injury of muscle(s) and tendon(s) of peroneal muscle group at lower leg level S86.31 - Strain of muscle(s) and tendon(s) of peroneal muscle group at lower leg level S86.311 - Strain of muscle(s) and tendon(s) of peroneal muscle group at lower leg level, right leg S86.312 - Strain of muscle(s) and tendon(s) of peroneal muscle group at lower leg level, left leg S86.319 - Strain of muscle(s) and tendon(s) of peroneal muscle group at lower leg level, unspecified leg