S86.1 - Injury of other muscle(s) and tendon(s) of posterior muscle group at lower leg level
S86.12 - Laceration of other muscle(s) and tendon(s) of posterior muscle group at lower leg level
S86.121 - Laceration of other muscle(s) and tendon(s) of posterior muscle group at lower leg level, right leg
S86.122 - Laceration of other muscle(s) and tendon(s) of posterior muscle group at lower leg level, left leg
S86.129 - Laceration of other muscle(s) and tendon(s) of posterior muscle group at lower leg level, unspecified leg