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Regulations last checked for updates: Jan 07, 2026
Title 42 - Public Health last revised: Jan 01, 2026
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Title 42
Chapter IV
Part 400 - PART 400—INTRODUCTION; DEFINITIONS
Subpart A - Subpart A [Reserved]
Subpart B [§ 400.200 - § 400.203] - Subpart B—Definitions
Subpart C - Subpart C [Reserved]
authority:
42 U.S.C. 1302
and 1395hh and
44 U.S.C. Chapter
35
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