CFR›Title 42›Chapter IV›Part 456›42 CFR Part 456 Subpart B Citation42 CFR Part 456 Subpart BContainsSections § 456.21–§ 456.23CorpusDaily eCFRDisplayed edition2026-10-01Last updated2026-10-01 Subpart B—Utilization Control: All Medicaid Services Sections § 456.21 § 456.21 Scope. § 456.22 § 456.22 Sample basis evaluation of services. § 456.23 § 456.23 Post-payment review process. Authority42 U.S.C. 1302.Source43 FR 45266, Sept. 29, 1978, unless otherwise noted. Previous A Subpart A—General Provisions Next C Subpart C—Utilization Control: Hospitals