S66.02 - Laceration of long flexor muscle, fascia and tendon of thumb at wrist and hand level S66.0 - Injury of long flexor muscle, fascia and tendon of thumb at wrist and hand level S66.02 - Laceration of long flexor muscle, fascia and tendon of thumb at wrist and hand level S66.021 - Laceration of long flexor muscle, fascia and tendon of right thumb at wrist and hand level S66.022 - Laceration of long flexor muscle, fascia and tendon of left thumb at wrist and hand level S66.029 - Laceration of long flexor muscle, fascia and tendon of unspecified thumb at wrist and hand level