42 C.F.R. § 436.210
Individuals who meet the income and resource requirements of the cash assistance programs
The agency may provide Medicaid to any group or groups of individuals specified under § 436.201(a)(1), (a)(2), (a)(3), (a)(5), and (a)(6) who are not mandatory categorically needy and who meet the income and resource requirements of the appropriate cash assistance program for their status (that is, OAA, AFDC, AB, APTD, or AABD).