The only copy of HCAR 4.229 retrieved is the text attached to the Agency of Human Services filing 21P-012, signed May 18, 2021, described as "a new rule that reflects current practice and policy" (Vermont Legislative Committee on Administrative Rules, filing 21-P12). The adopted and effective date, and any later amendment, were not confirmed, because the agency rules page and every Department of Vermont Health Access page tried returned HTTP 403.
This guide reads HCAR 4.229 from the 2021 filing text. The adopted version, any later amendments, the fee schedule, and the January 2026 coding changes named in search results could not be reached. Confirm the current rule before relying on any detail here.
The reimbursement criteria at a glance
- Is ABA covered by Vermont Medicaid
- Who is eligible
- Covered services and rates
- Exclusions and settings
- Prior authorization
- Provider qualifications
- The commercial mandate
- Practices with in-house diagnostics versus ABA-only practices
- How this connects to the rest of your compliance stack
- What this guide could not verify
- Vermont reimbursement variables at a glance
- Frequently asked questions
- Where professional advice is essential
Is ABA covered by Vermont Medicaid
Yes. The rule "sets forth the criteria for Medicaid coverage for applied behavior analysis services under Vermont's Medicaid program." The statute 8 V.S.A. 4088i applies to Medicaid: Act 158 of 2012 defines a "health insurance plan" to include "Medicaid, the Vermont health access plan, and any other public health care assistance program," and applies to Medicaid on or after July 1, 2012 (Vermont Agency of Human Services filing 21P-012; Act 158 of 2012).
Who is eligible
A beneficiary must be actively enrolled in Medicaid at the time of service, be under 21, have a Diagnostic and Statistical Manual diagnosis of Autism Spectrum Disorder, early childhood developmental disorder, or any successor diagnosis, and have a prescription for ABA from a board certified or board eligible psychiatrist, a doctorate-level licensed psychologist, a board certified or board eligible pediatrician, a board certified or board eligible neurologist, or a developmental-behavioral or neurodevelopmental disabilities pediatrician. The beneficiary must also "be medically stable and not require 24-hour medical or nursing monitoring" (HCAR 4.229, filing 21P-012).
Covered services and rates
The rule lists covered services: "Functional Assessment and Analysis," "Treatment plan development," "Direct treatment," "Program supervision," "Parent/caregiver training," and "Team conferences." It contains no codes or rates and points to the Vermont Medicaid Fee Schedule on the Department of Vermont Health Access website (HCAR 4.229, filing 21P-012). No rate was retrieved. Search summaries described a state plan page with a tiered case rate for Medicaid-primary members, which could not be read, so whether Vermont pays ABA by case rate or fee-for-service is unresolved.
Exclusions and settings
"Vermont Medicaid will not authorize ABA services for any of the following: School-based ABA services authorized under the Individuals with Disabilities Education Act (IDEA) and reimbursed by the Agency of Education," and "Medicaid beneficiaries in long term out-of-home placement/care outside a community setting" (HCAR 4.229, filing 21P-012). Home, community, clinic, and telehealth rules were not verified.
Prior authorization
The rule states that the fee schedule "indicates which services require prior authorization." The statute adds that "the amount, frequency, and duration of treatment described in this section shall be based on medical necessity and may be subject to a prior authorization requirement under the health insurance plan" (HCAR 4.229; Act 158 of 2012). Who reviews requests and any hour limits were not verified.
Provider qualifications
"BCBAs and BCaBAs providing ABA services must be licensed in Vermont, working within the scope of their practice, and enrolled in Vermont Medicaid." A Behavior Technician, including an RBT, "holds a bachelor's degree, or is pursuing a bachelor's degree, and practices under close, ongoing supervision of a BCBA or BCaBA supervisor. Relevant experience may be exchanged for a degree" (HCAR 4.229, filing 21P-012). See the Vermont Licensing page.
The commercial mandate
Act 158 of 2012 amended 8 V.S.A. 4088i so that "a health insurance plan shall provide coverage for the evidence-based diagnosis and treatment of" early childhood developmental disorders, "including applied behavior analysis supervised by a nationally board-certified behavior analyst." The provisions apply to other health insurance plans on or after October 1, 2012, and no later than October 1, 2013. The converted text of the Act mixes struck and inserted wording, so the amended age range and any limits should be confirmed in the current codified section, which was not read (Vermont Act 158 of 2012, approved May 16, 2012).
Practices with in-house diagnostics versus ABA-only practices
The prescription must come from a psychiatrist, a doctorate-level psychologist, a pediatrician, a neurologist, or a developmental-behavioral pediatrician. A practice with an in-house psychologist or physician on that list can prescribe from within, while an ABA-only practice depends on an outside prescriber for every beneficiary.
How this connects to the rest of your compliance stack
See the Vermont Licensing page for the credential posture and the Vermont entity page for the structure analysis.
What this guide could not verify
- The adopted and effective date of HCAR 4.229 and any later amendment.
- Any rate, and whether Vermont pays by case rate or fee-for-service.
- Home, community, clinic, and telehealth rules.
- Who reviews prior authorization, hour limits, and the January 2026 coding changes.
- The live codified text of 8 V.S.A. 4088i.
Vermont reimbursement variables at a glance
| Variable | Vermont value |
|---|---|
| ABA covered by Medicaid? | Yes, HCAR 4.229 (filing signed May 18, 2021) |
| Eligibility | Enrolled, under 21, DSM diagnosis, specialist prescription, medically stable |
| Excluded | IDEA school-based ABA; long term out-of-home placement |
| Provider | BCBA and BCaBA licensed in Vermont and enrolled |
| Rates | Not verified |
Frequently asked questions
Who can prescribe ABA in Vermont Medicaid?
Does Medicaid pay for ABA in school?
Must a BCBA be licensed?
Where professional advice is essential, not optional
Vermont is the thinnest Medicaid page in this series. The rule was read only from its 2021 filing and no rate was available, so treat this as a map of what to confirm with the Department of Vermont Health Access.
The governing authorities to know are HCAR 4.229 and 8 V.S.A. 4088i.
This page describes rules read from a 2021 rule filing and the 2012 Act that amended the Vermont mandate. The Department of Vermont Health Access, the Department of Financial Regulation, and each payor provide current requirements. Do not rely on this page or any secondary source in place of direct verification.