"Applied behavior analysis" means the design, implementation, and evaluation of environmental modifications, using behavioral stimuli and consequences, to produce socially significant improvement in human behavior, including the use of direct observation, measurement, and functional analysis of the relationship between environment and behavior.
"Autism spectrum disorder" means any pervasive developmental disorder or autism spectrum disorder, as defined in the most recent edition or the most recent edition at the time of diagnosis of the Diagnostic and Statistical Manual of Mental Disorders of the American Psychiatric Association.
"Behavioral health treatment" means professional, counseling, and guidance services and treatment programs that are necessary to develop, maintain, or restore, to the maximum extent practicable, the functioning of an individual.
"Diagnosis of autism spectrum disorder" means medically necessary assessments, evaluations, or tests to diagnose whether an individual has an autism spectrum disorder.
"Medically necessary" means in accordance with the generally accepted standards of mental disorder or condition care and clinically appropriate in terms of type, frequency, site, and duration, based upon evidence and reasonably expected to do any of the following:
"Pharmacy care" means medications prescribed by a licensed physician and any health-related services deemed medically necessary to determine the need or effectiveness of the medications.
"Psychiatric care" means direct or consultative services provided by a psychiatrist licensed in the state in which the psychiatrist practices.
"Psychological care" means direct or consultative services provided by a psychologist licensed in the state in which the psychologist practices.
"Therapeutic care" means services provided by licensed or certified speech therapists, occupational therapists, physical therapists, or clinical social workers.
"Treatment for autism spectrum disorder" shall be identified in a treatment plan and includes the following care prescribed or ordered for an individual diagnosed with autism spectrum disorder by a licensed physician or a licensed psychologist who determines the care to be medically necessary:
"Treatment plan" means a plan for the treatment of autism spectrum disorder developed by a licensed physician or a licensed psychologist pursuant to a comprehensive evaluation or reevaluation performed in a manner consistent with the most recent clinical report or recommendation of the American Academy of Pediatrics or the American Academy of Child and Adolescent Psychiatry.
Va. Code § 38.2-3418.17