42 C.F.R. § 498.20
(2) Special rules: Independent laboratories and suppliers of portable x-ray services. If CMS determines that an independent laboratory or a supplier of portable x-ray services no longer meets the conditions for coverage of some or all of its services, the notice—
(3) Special rules: Nonparticipating hospitals that elect to claim payment for emergency services. If CMS determines that a nonparticipating hospital no longer qualifies to elect to claim payment for all emergency services furnished in a calendar year, the notice—
(4) Other special rules. Additional rules pertaining, for example, to content and timing of notice, notice to the public and to other entities, and time allowed for submittal of additional information, are set forth elsewhere in this chapter, as follows:
Part 405 Subpart X—for rural health clinics. Part 416—for ambulatory surgical centers. Part 489—for providers, when their provider agreements have been terminated. Part 1001, Subpart B—for excluded or suspended providers, suppliers, physicians, or practitioners. Part 1001, Subpart C—for providers, when their provider agreements are terminated by the OIG. Part 1004—for sanctioned providers and practitioners.
(b) Effect of initial determination. An initial determination is binding unless it is—