In this subchapter:
(1) "Contraindication" means the potential for, or the occurrence of:
(A) an undesirable change in the therapeutic effect of a prescribed drug because of the presence of a disease condition in the patient for whom the drug is prescribed; or
(B) a clinically significant adverse effect of a prescribed drug on a disease condition of the patient for whom the drug is prescribed.
(2) "Drug" has the meaning assigned by Section 551.003, Occupations Code.
(2-a) "Enrollee" means an individual who is covered under a health benefit plan, including a covered dependent.
(3) "Indication" means a symptom, cause, or occurrence in a disease that points out the cause, diagnosis, course of treatment, or prognosis of the disease.
(4) "Peer-reviewed medical literature" means scientific studies published in a peer-reviewed national professional journal.