S66.121 - Laceration of flexor muscle, fascia and tendon of left index finger at wrist and hand level S66.1 - Injury of flexor muscle, fascia and tendon of other and unspecified finger at wrist and hand level S66.12 - Laceration of flexor muscle, fascia and tendon of other and unspecified finger at wrist and hand level S66.121 - Laceration of flexor muscle, fascia and tendon of left index finger at wrist and hand level