Aetna Sets ABA Hours by How Far Below Average a Child Scores

Aetna's commercial ABA medical necessity guide, revised for January 1, 2026, turns standardized scores into hours. From the same date, Aetna stopped concurrent review for outpatient ABA, so "if care is needed beyond the initial precertification, submit a new precertification request." And since August 1, one form "replaces all other" ABA precertification information requests.

The turn: the score sets the hours and ends the coverage

Most payers ask for standardized assessments as evidence. Aetna's guide uses them as the formula. A child qualifies at one standard deviation below the mean. The distance below the mean suggests the hours. And a lack of movement on that scale is written in as a reason to end coverage.

What the guide says

• Entry: functional impairment "on a standardized scale of functioning in the past 12 months," for example the Vineland-3, ABAS, VB-MAPP or ABLLS. It must be "at least one standard deviation below the population mean OR represent a significant risk of harm."
• Severity grid ("can be used as a guide"), in hours per week: mild, more than 1 SD below, 1–4; moderate, more than 1.5 SD, 4–7; severe, more than 2 SD, 7–10. It covers three domains: maladaptive behavior, social communication and self-care. "Authorized hours will be based on documented severity."
• Typical ranges: comprehensive ABA is ages 0–7 at 10–25 hours a week for 1–2 years. Focused ABA is all ages at 1–20 hours a week.
• Supervision: QHP protocol modification "at 1 to 2 hours per 10 hours of treatment by protocol," plus caregiver training.
• Termination: progress is evaluated "every six months." Coverage ends with "improvement of less than one standard deviation in all domains for successive authorization periods." It also ends with gains of two or more SD in multiple domains, or one or more SD for focused ABA.

The August form asks for hours by code, whether "any ABA hours [are] being requested during class," a standardized assessment within 12 months, and measurable caregiver goals. It also wants a clinical rationale whenever hours change from the last approval.

The limits

The guide doesn't say whether the per-domain hours add up to a weekly total. A child rated severe in all three domains could read as 21–30 hours or as 7–10, so ask your reviewer how they apply it. The plan document governs where it differs, and state mandates may override. The form isn't used in Maryland or Massachusetts. Maryland plans use Exhibit A, which bars denial based solely on hours or on a school setting. This covers Aetna commercial plans, including Innovation Health, Allina Health | Aetna and Banner|Aetna. It doesn't cover Aetna Better Health Medicaid.

What you must know or do

• Before each Aetna renewal: put the latest Vineland-3 or ABAS scores for each domain next to the hours you're requesting. Check that the hours map to the SD band in the grid.
• Find at-risk clients now: pull any Aetna client whose standard scores moved less than one SD across the last two authorization periods. That's the written termination trigger. Document the barriers and plan changes before the next request.
• Calendar: treat each renewal as a new precertification. Submit early enough for a full medical necessity review, and check you're using form GR-69017-4 (7-26).
• School hours: the form asks directly about hours during class. Have that answer ready.