42 CFR § 486.1 - Basis and scope.
(a) Statutory basis. This part is based on the following sections of the Act:
1861(p) - for coverage of outpatient physical therapy services furnished by physical therapists in independent practice.
1861(s) (3), (15), and (17) - for coverage of portable X-ray services.
(1) This part sets forth the conditions for coverage of certain specialized services that are furnished by suppliers and that are not specified in other portions of this chapter.
(2) The conditions for coverage of other specialized services furnished by suppliers are set forth in the following regulations which, unless otherwise indicated, are part of this chapter:
(i) Ambulatory surgical center (ASC) services - Part 416.
(ii) Ambulance services - Part 410, subpart B.
(iii) ESRD services - Part 405, subpart U.
(iv) Laboratory services - Part 493.
(vi) Rural health clinic and Federally qualified health center services - Part 491, subpart A.