CFR›Title 49›Subtitle B›Chapter V›Part 572›Subpart K ContainsSections 572.90–572.91CorpusDaily eCFRDisplayed edition2026-04-27Last updated2026-04-27 Subpart K—Newborn Infant Sections 572.90 § 572.90 Incorporation by reference. 572.91 § 572.91 General description. Source58 FR 3232, Jan. 8, 1993, unless otherwise noted. Previous J Subpart J—9-Month Old Child Next L Subpart L—Free Motion Headform