(a) The executive commissioner, in the rules and standards governing the vendor drug program, may not require prior authorization for a nonpreferred antipsychotic drug that is included on the vendor drug formulary and prescribed to an adult patient if:
(1) during the preceding year, the patient was prescribed and unsuccessfully treated with a 14-day treatment trial of an antipsychotic drug that is included on the appropriate preferred drug list adopted under Subchapter E and for which a single claim was paid;
(2) the patient has previously been prescribed and obtained prior authorization for the nonpreferred antipsychotic drug and the prescription is for the purpose of drug dosage titration; or
(3) subject to federal law on maximum dosage limits and commission rules on drug quantity limits, the patient has previously been prescribed and obtained prior authorization for the nonpreferred antipsychotic drug and the prescription modifies the dosage, dosage frequency, or both, of the drug as part of the same treatment for which the drug was previously prescribed.
(b) Subsection (a) does not affect:
(1) a pharmacist’s authority to dispense the generic equivalent or interchangeable biological product of a prescription drug in accordance with Subchapter A, Chapter 562, Occupations Code;
(2) any drug utilization review requirements prescribed by state or federal law; or
(3) clinical prior authorization edits to preferred and nonpreferred antipsychotic drug prescriptions.

Text of section effective on April 01, 2025