TN 3 (11-22)
   
   
   
   Diagnostic testing performed by a qualified audiologist who is either independently
      practicing or on the staff of a nonphysician directed clinic is covered as “other diagnostic
      tests” when a physician orders such testing for the purpose of obtaining additional information
      for a hearing deficit or a related medical problem. Thus, diagnostic service performed
      by a qualified audiologist to measure a hearing deficit or to identify the factors
      responsible for the deficit are covered where such services are necessary to enable
      the physician to determine whether otologic surgery is indicated. However, where the
      diagnostic services are performed only to determine the need for, or the appropriate
      type of, a hearing aid, the services are excluded whether performed by a physician
      or nonphysician. Reimbursement for covered services may be made to the audiologist
      (or clinic on the audiologist's behalf) if the audiologist accepts assignment, or
      to the beneficiary.