Autism Spectrum Disorders — CPB 0648 | AETNA Coverage Update

Aetna modified CPB 0648 for autism spectrum disorder evaluation and treatment, effective October 3, 2025. Here's what billing teams need to do.

Aetna, a CVS Health company, updated Clinical Policy Bulletin CPB 0648 governing Aetna autism spectrum disorder coverage policy for evaluation, diagnosis, and treatment services. This modification affects a wide range of CPT codes—including 96112, 96113, 96130, 96132, 81228, 81229, 92521, 92522, 95816, 95819, and dozens more across behavioral health, genetics, neurology, and speech-language pathology. If your practice bills ASD-related services to Aetna members, audit your charge capture and documentation workflows against this updated policy before October 3, 2025.

Quick-Reference Table

Aetna Autism Spectrum Disorder Coverage Criteria and Medical Necessity Requirements 2025

Aetna's ASD coverage policy establishes a clear threshold for medical necessity: the member must show developmental delays or persistent deficits in social communication and social interaction across multiple contexts. The evaluation must be performed by an appropriately certified or licensed clinician. If your documentation doesn't reflect both of those conditions explicitly, you're at risk for claim denial.

The policy covers a defined list of evaluation and treatment services when those criteria are met. ASD-specific developmental evaluation, cognitive and adaptive behavior testing, and speech-language communication evaluations by a licensed SLP all qualify. CPT codes 96112 and 96113 (developmental test administration), 96130 and 96131 (psychological testing evaluation), and 96132 and 96133 (neuropsychological testing) are covered when selection criteria are satisfied.

Audiological evaluation is covered—including frequency-specific brainstem auditory evoked response and otoacoustic emissions. That maps to CPT codes 92650, 92651, 92652, and 92653 for auditory evoked potentials.

Genetic testing is covered under specific conditions. High-resolution chromosome analysis (karyotype) and DNA analysis for fragile X syndrome are covered when mental retardation is present or cannot be excluded, or when there is a family history of fragile X or mental retardation of undetermined etiology. Comparative genomic hybridization (CGH) is covered when criteria in CPB 0787 are met. Relevant codes include 81228, 81229, 81349, 0209U, and the chromosome analysis series 88261–88264.

EEG services have specific triggers. Standard EEG (CPT 95816, 95819, 95822) is covered for clinical spells that might represent seizures. Sleep-deprived EEG is covered only when the child has clinical seizures, high suspicion of subclinical seizures, or symptoms of developmental regression—particularly in toddlers and preschoolers. Document the specific clinical indication in your notes. A general ASD diagnosis alone won't support EEG billing.

Pharmacotherapy for co-morbidities is covered, but subject to the member's drug benefits—not the medical benefit. Don't bill pharmacy through the medical claim. Behavior modification for behavioral co-morbidities is covered under the medical benefit. That's an important distinction that affects which CPT codes you use and which benefit bucket the claim hits.

Aetna Autism Spectrum Disorder Exclusions and Non-Covered Indications

Psychotherapy codes 90845–90853 carry a critical restriction in this coverage policy. They are covered only for co-morbid medical or psychological conditions. They are not covered for neurodevelopmental habilitation—meaning ASD therapy itself doesn't support these codes. If your billing team is using 90845, 90846, 90847, or adjacent codes to bill ABA-adjacent psychotherapy for ASD without a documented co-morbid condition, expect denials.

EEG biofeedback is excluded. CPT codes 95812, 95813, 95816, 95819, and 95822 carry an explicit notation: covered for symptoms that may indicate seizures, not EEG biofeedback. If your documentation doesn't clearly tie the EEG to seizure evaluation, Aetna can deny it.

The real issue here is documentation specificity. Many of the covered services under CPB 0648 require the documentation to name the specific clinical trigger—not just the ASD diagnosis. Genetic testing requires the specific family history or clinical finding. EEG requires the specific seizure-related indication. Metabolic testing requires one of several enumerated clinical signs. Generic "autism evaluation" notes won't cut it.

Coverage Indications at a Glance

Aetna Autism Spectrum Disorder Billing Guidelines and Action Items 2025

CPT, HCPCS, and ICD-10 Codes for Autism Spectrum Disorder Under CPB 0648

Covered CPT Codes (When Selection Criteria Are Met)

This policy includes 314 total CPT codes and 144 total HCPCS codes. The codes above represent those explicitly listed in the policy data provided. Check the full CPB 0648 policy document at app.payerpolicy.org for the complete code list.

Not Covered / Restricted Codes

Key ICD-10-CM Diagnosis Codes

The policy data notes 21 ICD-10-CM codes are associated with CPB 0648. The specific codes were not included in the data extract. Reference the full policy at app.payerpolicy.org/p/aetna/0648 for the complete ICD-10 list before submitting claims.