Medicaid Flexibility for States Act - Authorizes a state to limit the application within the state of specified provisions of the Patient Protection and Affordable Care Act (PPACA) that expand the program under title XIX (Medicaid) of the Social Security Act by enacting a law that: (1) expresses the intent of the state to opt out of one or more of the provisions of PPACA, and (2) contains a list of the provisions that will not apply to the state.