CFR›Title 42›Chapter IV›Part 417›42 CFR Part 417 Subpart R Citation42 CFR Part 417 Subpart RContainsSection § 417.640CorpusDaily eCFRDisplayed edition2026-10-15Last updated2026-10-15 Subpart R—Medicare Contract Appeals Sections § 417.640 § 417.640 Applicability. Authority42 U.S.C. 1302 and 1395hh, and 300e, 300e-5, and 300e-9, and 31 U.S.C. 9701.Source50 FR 1346, Jan. 10, 1985, unless otherwise noted. Previous Q Subpart Q—Beneficiary Appeals Next U Subpart U—Health Care Prepayment Plans