Within available funds and subject to the rules of the Oregon Health Authority, medical assistance shall be provided to an individual who is a resident of this state and who is receiving a category of aid; would be eligible for a category of aid but it not receiving a category of aid; is required by federal law to be included in the state’s medical assistance program in order for that program to qualify for federal funds; and is not described in subsection (3) of this section but for whom federal funding is available under Title XIX or XXI of the Social Security Act. See definition section Or. Rev. Stat. § 414.025.