CFR›Title 42›Chapter V›Part 1000 ContainsSubparts A–BCorpusDaily eCFRDisplayed edition2026-04-24Last updated2026-04-24 PART 1000—INTRODUCTION; GENERAL DEFINITIONS Subparts A Subpart A [Reserved] B Subpart B—Definitions Section 1000.10 Authority42 U.S.C. 1320 and 1395hh.Source51 FR 34766, Sept. 30, 1986, unless otherwise noted. Next 1001 Part 1001—Program Integrity—Medicare and State Health Care Programs