Aetna ABA coverage in Kansas: the intake guide.

Aetna puts the recency clock on the functional assessment, not the diagnosis: medical necessity requires "demonstration of functional impairment on a standardized scale of functioning in the past 12 months," and the impairment must be at least one standard deviation below the population mean or represent a significant risk of harm to self or others. The ABA Medical Necessity Guide sets no expiry on the ASD diagnosis itself.^[8]

"There is a DSM-V diagnosis of Autism Spectrum Disorder (ICD-10/ F84.0; F84.3 - F84.9) obtained by an appropriate provider (i.e. licensed psychologist/psychiatrist, physician or other health care professional qualified to diagnose mental health conditions within their scope of practice)." Note the code set the guide actually prints: F84.0 plus F84.3–F84.9, which leaves out F84.1 and F84.2.^[8]

No diagnostic instrument is mandated; the named instruments sit on the functional-impairment test — "the Vineland Adaptive Behavior Scales 3 (VABS-3), the Adaptive Behavior Assessment Scale (ABAS), VB-MAPP or ABLLS" are given as examples of the standardized scale that must show impairment within the past 12 months.^[8]

No referral or physician order is required by the national guide — the gate is the diagnosis "obtained by an appropriate provider" plus precertification. The only prescription requirement Aetna publishes is its Maryland exhibit (COMAR 31.10.39), where the child's primary care or specialty physician must perform the evaluation and prescribe the treatment with specific goals; that exhibit does not reach plans outside Maryland.^[8]

Aetna publishes no commercial decision clock of its own: ABA "services require prior authorization. To get ABA services precertified, call the number on the member's Aetna ID card," and the manual sets no reauthorization lead time (none in the ABA Medical Necessity Guide or the ABA precert form either). The legal ceiling depends on funding. Kansas fully insured plans are held to the Insurance Department's utilization-management standards adopted by K.A.R. 40-4-41: prospective (pre-service) review "Within 15 calendar days of the receipt of request" (one 15-calendar-day extension, with at least 45 days to supply missing information) and "no later than 72 hours" for urgent care; an urgent request to extend a current course of treatment is decided within 24 hours if received "at least 24 hours before the expiration of the currently certified period." Self-funded ERISA plans land on the same numbers under 29 CFR 2560.503-1 (15 days, 72 hours urgent), so 15 calendar days / 72 hours from receipt is the ceiling either way.^[9][10][11]

Aetna: "We coordinate benefits as allowed by state or federal law following the National Associations of Insurance Commissioners (NAIC) guidelines. If there is no applicable law, then we coordinate according to the member's plan" — the manual's order-of-benefits list includes the birthday rule for children whose parents are not separated or divorced. Kansas's COB rule (K.A.R. 40-4-34) governs fully insured plans: for a child whose parents are married or living together, "The plan of the parent whose birthday falls earlier in the calendar year is the primary plan" (same birthday: the plan that has covered the parent longest); for divorced or separated parents a court decree naming the responsible parent controls. Self-funded plans follow their plan document instead, and Aetna notes many use "Maintenance of Benefits (MOB)" rather than the "100% Allowable" method most state laws require, so a secondary payment can be smaller. If the child also has Medicaid, this plan pays first: Medicaid is payer of last resort (42 CFR 433.139) — bill here, then send the EOB or denial to Medicaid, and get Medicaid's own prior auth too if the state requires it. TRICARE is secondary to this plan ("TRICARE shall be last pay," 32 CFR 199.8), and "CHAMPVA is the last payer to OHI" (38 CFR 17.276(d)).^{[9][12][13][14][15]}

K.S.A. 40-2,194 limits the mandate to covered individuals under age 12, on fully-insured large-group coverage only (51+ employees since 2023's SB 24), with ABA capped at 1,300 hours a year for four years for a child diagnosed between birth and age 5 and 520 hours a year otherwise — caps a plan may exceed with prior approval when medically necessary. Advocacy analysis (not a regulator determination) treats the under-12 limit and the hour caps as unenforceable quantitative treatment limits under MHPAEA for parity-covered plans, so treat an age- or cap-based denial as appealable rather than final. The carrier's national ABA policy sets no age bound of its own.^[3][8]

Ask the plan: Benefits verification on the specific plan — funding type first, then the ABA benefit terms.

Not published. Aetna's ABA Medical Necessity Guide and CPB 0554 set medical-necessity criteria and precertification requirements but say nothing about which ABA codes may be delivered remotely, or with which place-of-service code.^[8][1]

Ask the plan: Aetna provider services at the number on the member's ID card, and the plan's telehealth/virtual-care policy — confirm before scheduling remote 97155 or 97156.

Aetna sets a duty, not a number. Where a state mandate, plan document or contract allows services from someone neither state-licensed nor BACB-certified, "there must be supervision and direction of the unlicensed or non-certified providers in line with practice standards." The ABA Medical Necessity Guide publishes no supervision percentage, ratio or caseload cap — the operative standard is professional practice plus whatever the contract adds.^[8]

The claim carries the analyst, not the technician. "Services must be provided directly or billed by licensed behavior analysts (in states with behavior analyst licensure laws), board-certified behavior analysts, or licensed psychologists where behavior analysis is within their scope of practice definition, unless state mandates, plan documents or contracts require otherwise." The escape clause matters: a state mandate or your contract can move the line, so confirm before enrolling technicians.^[8]

Aetna does not publish a POS code list for ABA. The one place-of-service boundary it does state is the schools carve-out: pursuant to applicable law Aetna "is not required [to] provide services to a child under an individualized education program or any obligation imposed on a public school by the Individuals with Disabilities Education Act." That is a limit on paying for what the IEP owes, not a blanket ban on the school setting — and it yields to a stronger state mandate. Where ABA is payable in a school, in the community or in a group home is a benefit-document question on Aetna plans.^[8]

Ask the plan: The member's benefit document, and Aetna provider services for whether school-setting ABA is payable on that plan.

Not published. Neither the ABA Medical Necessity Guide nor Aetna's clinical policy bulletin on ABA addresses whether 97153 and 97155 may be billed for the same clock time; Aetna carries the concurrency question in its claim editing rather than in a public policy.

Ask the plan: Aetna precertification/provider services at the number on the member's ID card, and the plan's own reimbursement schedule — ask specifically whether 97155 pays alongside 97153 when analyst, technician and member are all face-to-face.

Not published. Aetna's ABA documents set medical-necessity criteria and precertification requirements for 97151–97158, 0362T and 0373T, but no per-day unit ceiling and no statement of which MUE table applies. The guide does publish typical intensity bands — comprehensive ABA 10–25 hours/week, focused ABA 1–20 hours/week — as clinical guidance, not claim edits.^[8]

Ask the plan: Aetna provider services; confirm before promising a family more than four hours a day of 97153.

Not published in Aetna's ABA materials — no rule on who signs a session note or within what window.

Blocked on: The Aetna provider manual and your participation agreement's documentation clause.