New York Medicaid ABA coverage: the intake guide.

Under 21. ABA “will be covered for NYS Medicaid fee-for-service (FFS) and Medicaid Managed Care (MMC) members under 21 years of age with a diagnosis of Autism Spectrum Disorder (ASD) as defined by the Diagnostic and Statistical Manual of Mental Disorders, Fifth Edition (DSM-5) and/or Rett Syndrome.” No minimum age is set, and there is no waiver pathway and no adult coverage — so the 21st birthday is a hard coverage cliff worth flagging at intake for any member 19 or older.^[1]

New York regulates the referral’s age, not the evaluation’s. “Referrals for ABA services are valid for no more than two years” and must carry the “date of initial diagnosis” — but the manual sets no maximum age on the diagnostic report itself, so an older evaluation can still support a fresh referral. Once services start, “LBAs will update the treatment plan at least every 6 months or as needed,” and initial plans and updates “should be shared with the referring provider.” Managed-care plans layer tighter clocks on top (Fidelis runs a 2-year evaluation window plus a 60-month validated-tool rule; MetroPlus requires annual re-validation), so the card decides the operative recency rule.^[1]

“The NYS Medicaid member must be referred for ABA services by a NYS-licensed and NYS Medicaid-enrolled physician, psychologist, psychiatric nurse practitioner, pediatric nurse practitioner, or physician assistant,” and those referring providers “should follow the criteria for diagnosing ASD found in the DSM-5 and outlined in the NYS Department of Health’s publication, Clinical Practice Guideline on Assessment and Intervention Services for Young Children with Autism Spectrum Disorders.” LBAs and CBAAs are outside that list — NYSED bars them from diagnosing the condition ABA is provided for and from prescribing or ordering ABA — which is why no New York case should open without a separate diagnosing clinician in the file.^[1][17]

No instrument is mandated. What the state requires with the referral is the “DSM-5 Diagnostic Checklist for ASD diagnoses,” plus the “symptom severity level/level of support (if referral is from an ASD-diagnosing provider).” On the ABA side the manual asks only that the treatment plan record the “assessment methodology (e.g., antecedent-behavior-consequence log, behavioral observation/sampling, functional behavior assessment, self-monitoring/self-report, inventory, etc.)” and, “as appropriate, identify standardized assessment used (e.g., adaptive behavior scales, symptom inventories, aggression ratings) and results of assessment.” Named-instrument requirements in New York are a managed-care overlay, not a state rule.^[1]

Required — and at the fee-for-service layer it is the entire authorization gate, because nothing in the current manual requires prior approval. The referral must come from a NYS-licensed, NYS Medicaid-enrolled physician, psychologist, psychiatric NP, pediatric NP or PA; it is “valid for no more than two years”; and it must carry seven elements: age of the patient, the ASD or Rett Syndrome diagnosis, date of initial diagnosis, co-morbid diagnosis if applicable, symptom severity level/level of support, “statement the patient needs ABA services,” and the DSM-5 Diagnostic Checklist. An incomplete referral is the only thing standing between an FFS family and a booked assessment.^[1]

Nothing to decide at the fee-for-service layer: the eMedNY ABA manual requires no prior authorization, so the referral is the whole gate (FFS’s own new PA clocks — standard requests “adjudicated within seven days from the date received, provided all necessary documentation is included,” expedited within 72 hours, effective January 1, 2027 — only bite on services that carry a PA). For the majority of children, who sit in a Medicaid Managed Care plan, the state model contract sets the clock: a prior authorization request is decided “within three (3) business days of receipt of necessary information, but no more than fourteen (14) days after receipt of the Service Authorization request,” expedited requests within 72 hours, and a request for “more of an authorized service than what is currently authorized” (a concurrent review — reauths and unit increases) “within one (1) business day of receipt of necessary information”; either clock may be extended up to 14 days. Federal law caps the outer limit at 7 calendar days for plan rating periods starting on or after January 1, 2026 (42 CFR 438.210(d)). The state sets no reauth submission lead time; plans publish their own.^{[1][18][19][20]}

Medicaid pays last. “The Medicaid Program is designed to provide payment for medical care and services only after all other resources available for payments have been exhausted; Medicaid is the payer of last resort,” and “Providers must bill all applicable insurance sources before submitting claims to Medicaid. Payment from those sources must be received before submitting a Medicaid claim.” So check MEVS for a third-party coverage code at intake, bill the commercial plan first, then bill eMedNY for the balance — a claim pushed past Medicaid’s 90-day filing limit by the other payer’s processing must reach Medicaid within 30 days of that payer’s determination, with the Explanation of Medical Benefits on paper claims. Two practical twists: a child with other insurance may be excluded from managed care (“Enrollees who have other third party insurance so that managed care enrollment is not cost-effective”), which lands them in FFS, where ABA has no PA at all; and if the child is in a plan, the plan must “alert the provider and ask them to bill the TPHI that should be primary to the Plan.” A provider may not refuse service because a third party is liable. The manuals state no pay-and-chase exception for ABA.^[21][22][19]

The manual answers telehealth only for supervision, not for service delivery. On-site supervision of technicians is preferred, “however, supervision may be conducted via a synchronous interactive audio and video telecommunication system, or similar means, consistent with NYS Medicaid FFS telehealth policy” — and the two required monthly contacts must be face-to-face and real time, so they “may not occur telephonically, via email or text messaging.” Which ABA service codes may themselves be delivered remotely, and under what place-of-service code, is not stated in the ABA manual; ABA-via-telehealth was under formal state evidence review in mid-2025. Plans publish their own answers (UHC Community Plan allows 97155, 97156 and 97157 at POS 02 for approved virtual-visits providers).^[1][3]

Blocked on: NYS Medicaid’s general telehealth policy and the Medicaid Update archive for an ABA-specific telehealth notice; for a managed-care member, the plan’s own telehealth policy.

Effective October 1, 2025 the supervision rules have hard numbers. “An LBA can supervise no more than six CBAAs/unlicensed individuals at a time”; “LBAs are required to supervise unlicensed individuals for a minimum of five percent of the hours the unlicensed individual spends providing behavior analysis services each calendar month”; and “supervision must include at least two face-to-face, real-time contacts per month” — explicitly not telephonic, email or text — with the LBA observing the technician delivering services in at least one. One of the two contacts may be a small-group meeting. 97155 counts toward the 5% “only when the LBA joins the patient and the unlicensed individual during a treatment session to direct the unlicensed individual/technician in implementing a new or modified treatment protocol.” CBAAs separately require direct supervision, cannot exceed six per LBA, and their supervisor “should assess each patient’s/client’s progress at least every 6 months… and review and sign treatment notes and reports prepared by the CBAA supervisee.” Because an LBA may not delegate any task inside the ABA scope of practice, supervision capacity is a hard cap on census.^[1][3]

The person who prepared the note signs it, and the supervising LBA countersigns a CBAA’s: the supervisor “should assess each patient’s/client’s progress at least every 6 months or as needed, and review and sign treatment notes and reports prepared by the CBAA supervisee.” Documentation of supervision itself “should be recorded in the patient file of the NYS Medicaid member.” Clinical documentation “should include, but may not be limited to” the treatment plan with assessment and goals, specific goals with associated data, total hours of service per week and who provided them (including caregiver training), and the location(s) of services. Retention: “a minimum of six years and, for minors, until the patient turns 22 years of age.”^[1]

“LBAs and CBAAs may work in any legally authorized setting. Examples of such settings include private practice, settings where patients/clients reside full-time or part-time, clinics, hospitals, residences, and community settings.” Then the line that shapes every New York intake: “Note: NYS Medicaid does not reimburse for ABA services in a school setting.” The treatment plan must record “location(s) of services (such as office, residence, community),” so setting is documented, not assumed. Managed-care plans have followed the state here rather than deviating — Fidelis stopped covering school-setting ABA on 9/1/2023 and MVP administratively denies any ABA code billed with POS = School from 7/1/2025.^[1]

The LBA is the billing provider, always. “An LBA must be enrolled with the NYS Medicaid FFS program to receive reimbursement for ABA services provided to a NYS Medicaid FFS or MMC member,” and “CBAAs cannot bill the NYS Medicaid program directly” — they enroll as OPRA providers and their work is billed by the supervising LBA. The role mapping is explicit: LBAs bill “using the LBA’s National Provider Identification (NPI) number for the ‘Billing’ provider and/or ‘Supervising’ provider,” with “the NPI number of the CBAA that provided the ABA service… reported as the ‘Rendering’ provider on each claim.” For non-enrolled unlicensed aides and LBA limited-permit holders, the supervising LBA’s NPI fills Billing, Supervising and Rendering alike. An Article 28 facility bills instead on the Ordered Ambulatory Fee Schedule, with its LBAs/CBAAs enrolled as OPRA providers and affiliated with the facility.^[1]

Not answered for 97153 with 97155. The ABA manual’s only same-session provision runs the other way — it tells you when 97155 may be counted toward the 5% supervision minimum, not whether a technician’s 97153 units may be billed for the same clock time. The manual’s two stated code restrictions are unrelated: “CPT code 97156 & 97157 can only be billed when the service is delivered in concert with care of the patient as part of the child’s treatment plan,” and 97154/97158 “can only be billed for a group treatment session of no more than 8 individuals.”^[1]

Blocked on: eMedNY provider services (800) 343-9000 and the Medicaid NCCI edit files applied to the ABA fee schedule; for a managed-care member, the plan’s claim-edit policy.

The ABA manual publishes no per-day unit ceiling, no weekly hour cap and no annual benefit maximum — consistent with a benefit that carries no prior approval at the FFS layer. The only quantitative limits stated are group size (97154 and 97158 “can only be billed for a group treatment session of no more than 8 individuals”) and the requirement that documentation record “total hours of service per week.” Whether New York applies the Medicaid NCCI MUE table to the ABA codes is not stated in the manual.^[1][2]

Blocked on: The eMedNY ABA Procedure Codes & Fee Schedule and the Medicaid NCCI MUE files; for a managed-care member, the plan’s authorized units are the operative ceiling.