In this chapter:
(1) "Autism and other pervasive developmental disorders" means a subclass of mental disorders characterized by distortions in the development of multiple basic psychological functions that are involved in the development of social skills and language, as defined by the Diagnostic and Statistical Manual (DSM-5), 5th Edition.
(1-a) "Commission" means the Health and Human Services Commission.
(2) "Council" means the Texas Council on Autism and Pervasive Developmental Disorders.
(3) "Executive commissioner" means the executive commissioner of the Health and Human Services Commission.