CFR›Title 42›Chapter IV›Part 456›Subpart B ContainsSections 456.21–456.23CorpusDaily eCFRDisplayed edition2026-04-24Last updated2026-04-24 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. Previous A Subpart A—General Provisions Next C Subpart C—Utilization Control: Hospitals