Reconstruction of major tendon of ankle, by any method, including: (a) osteotomy of hindfoot, with internal fixation; and (b) lengthening of major tendon of ankle; and (c) any of the following (if performed): (i) synovial biopsy; (ii) synovectomy; (iii) adjacent tendon transfer; (iv) turn down flaps; other than a service associated with a service to which item 49718 applies (H) (Anaes.) (Assist.)