Code of Federal Regulations Title 42. Public Health § 42.435.2 Purpose and applicability

(a) The eligibility provisions that a State plan must contain;

(b) The mandatory and optional groups of individuals to whom Medicaid is provided under a State plan;

(c) The eligibility requirements and procedures that the Medicaid agency must use in determining and redetermining eligibility, and requirements it may not use;

(d) The availability of FFP for providing Medicaid and for administering the eligibility provisions of the plan;  and

(e) Other requirements concerning eligibility determinations, such as use of an institutionalized individual's income for the cost of care.