A. The Oklahoma Health Care Authority Board shall, in administering the Medicaid prescription drug program, utilize the following definition for “phenylketonuria” to mean: An inborn error of metabolism attributable to a deficiency of or a defect in phenylalanine hydroxylase, the enzyme that catalyzes the conversion of phenylalanine to tyrosine. The deficiency permits the accumulation of phenylalanine and its metabolic products in the body fluids. The deficiency can result in intellectual disabilities (phenylpyruvic oligophrenia), neurologic manifestations (including hyperkinesia, epilepsy, and microcephaly), light pigmentation, and eczema. The disorder is transmitted as an autosomal recessive trait and can be treated by administration of a diet low in phenylalanine.

B. The Oklahoma Health Care Authority Board shall promulgate any rules necessary to effectuate the provisions of this section.