S66.009 - Unspecified injury of long flexor muscle, fascia and tendon of unspecified thumb at wrist and hand level S66.0 - Injury of long flexor muscle, fascia and tendon of thumb at wrist and hand level S66.00 - Unspecified injury of long flexor muscle, fascia and tendon of thumb at wrist and hand level S66.009 - Unspecified injury of long flexor muscle, fascia and tendon of unspecified thumb at wrist and hand level