Joint stabilisation procedure of acromioclavicular joint or sternoclavicular joint, including any of the following (if performed): (a) arthrotomy; (b) osteotomy, with or without fixation; (c) local tendon transfer; (d) local tendon lengthening or release; (e) ligament repair; (f) joint debridement; not being a service associated with a service to which another item in this Group applies (H) (Anaes.) (Assist.)