S66.99 - Other injury of unspecified muscle, fascia and tendon at wrist and hand level S66.9 - Injury of unspecified muscle, fascia and tendon at wrist and hand level S66.99 - Other injury of unspecified muscle, fascia and tendon at wrist and hand level S66.991 - Other injury of unspecified muscle, fascia and tendon at wrist and hand level, right hand S66.992 - Other injury of unspecified muscle, fascia and tendon at wrist and hand level, left hand S66.999 - Other injury of unspecified muscle, fascia and tendon at wrist and hand level, unspecified hand