Texas Government Code - GOV'T § 549.0251. Drugs Subject to Prior Authorization Requirements

(a) The executive commissioner, in the rules and standards governing the Medicaid vendor drug program and the child health plan program, shall require prior authorization for the reimbursement of a drug that is not included in the appropriate preferred drug list adopted under Subchapter E unless:

(b) The executive commissioner may require prior authorization for the reimbursement of a drug provided through any state program, other than a program described by Subsection (a), that the commission or a state health and human services agency administers, including a community mental health center and a state mental health hospital if the commission adopts a preferred drug list under Subchapter E that applies to that facility and the drug is not included in the appropriate list.

(c) The executive commissioner shall require that the prior authorization be obtained by the prescribing physician or prescribing practitioner. (Gov. Code, Sec. 531.073(a).)