As used in this subchapter:
(1) [Repealed.]
(2) “Medicaid” means the Arkansas program of medical assistance established under Title XIX of the Social Security Act;
(3) “Prescription Drug Access Program” means the limited prescription drug benefit Medicaid waiver program established under this subchapter;
(4) “Prescription drugs” means controlled substances and legend drugs as defined in § 20-64-503; and
(5) “Waiver” means the limited prescription drug benefit Medicaid waiver authorized by this subchapter.