S66.309 - Unspecified injury of extensor muscle, fascia and tendon of unspecified finger at wrist and hand level S66.3 - Injury of extensor muscle, fascia and tendon of other and unspecified finger at wrist and hand level S66.30 - Unspecified injury of extensor muscle, fascia and tendon of other and unspecified finger at wrist and hand level S66.309 - Unspecified injury of extensor muscle, fascia and tendon of unspecified finger at wrist and hand level