42 CFR 435.1011 - Requirement for mandatory State supplements.
(a) Except as specified in paragraph (b) of this section, FFP is not available in Medicaid expenditures in any quarter in which the State does not have in effect an agreement with the Secretary under section 212 of Pub. L. 93-66 (July 9, 1973) for minimum mandatory State supplements of the basic SSI benefit.
(b) This section does not apply to any State that meets the conditions of section 212(f) of Pub. L. 93-66.