Carpal tunnel release, including division of transverse carpal ligament or release of median nerve, by any method, including either or both of the following (if performed): (a) synovectomy; (b) neurolysis; other than a service associated with: (c) a service to which item 46339 applies; or (d) a service to which item 30023 applies that is performed at the same site (Anaes.) (Assist.)