Okla. Stat. tit. 36, § 6060.20

A. All individual and group health insurance policies that provide medical and surgical benefits shall provide the same coverage and benefits to any individual under the age of eighteen (18) years who has been diagnosed with an autistic disorder as it would provide coverage and benefits to an individual under the age of eighteen (18) years who has not been diagnosed with an autistic disorder. B. As used in this section, "autistic disorder" means a neurological disorder that is marked by severe impairment in social interaction, communication, and imaginative play, with onset during the first three (3) years of life and is included in a group of disorders known as autism spectrum disorders.