Treatment of hip, by arthroscopic means, including any procedures to treat bone or soft tissue in the same area (if performed), other than a service associated with a service to which another item in this Schedule applies if the service described in the other item is for the purpose of performing: (a) a procedure of the hip joint by arthroscopic means; or (b) surgery for femoroacetabular impingement (H) (Anaes.) (Assist.)