The Massachusetts Behavioral Health Partnership (MBHP), a Carelon Behavioral Health company, is MassHealth's contracted behavioral-health vendor — and the single biggest ABA gatekeeper in the state. It authorizes ABA for everyone not in an MCO or ACPP (the PCC Plan and the Primary Care ACOs) plus Health New England's BeHealthy Partnership plan. Clinically it is the state baseline: Massachusetts Medical Necessity Criteria, the standard PA form, 6-month authorizations. The reason to read it closely in 2026: Carelon, MBHP's parent, is the entity that executed MassHealth's supervision-ratio recoupments.
MBHP essentially is the state program: it applies MassHealth's criteria and the multi-payer Massachusetts Standard ABA PA Form — initial evaluation, initial services, continued services, and amendment request types, completed by the LABA rendering or supervising services — with authorizations in up to 6-month periods. Submissions run through Carelon's ProviderConnect portal (providers.masspartnership.com); the provider line is 1-800-495-0086, and Carelon's Massachusetts forms-and-guides library holds the current documents. No hour caps are published — requests stand on medical necessity. Note the state's own ABA performance-specification document sits behind the provider portal, so onboarding should pull it from ProviderConnect directly.[2][7]
When MassHealth enforced its CY2024 supervision-ratio audit — the 1:10 floor of 97155 to 97153, with recoupment letters in February–March 2026 — Carelon was the administrator that ran the analysis and issued the letters. For practices billing MBHP that means the scrutiny is not hypothetical: keep the supervision hours on the schedule and in the claims at 1:10 or better, and reconcile 97155-to-97153 ratios monthly rather than discovering them in a recoupment letter. Member routing and find-a-provider run through masspartnership.com, which also makes MBHP a referral source worth being listed with.[4]
The questions that decide whether a family can start with Massachusetts Behavioral Health Partnership (MBHP), and what they have to bring. Each maps onto something intake should ask on the first call.
EPSDT sets the bound, and nothing else does. ABA is covered for MassHealth Standard and CommonHealth members under 21, and for Family Assistance members under 19 — with no lower age bound and no dollar, visit or unit-of-service cap underneath it. For the youngest referrals the binding rule is non-duplication rather than age: ABA cannot duplicate services the child already receives through Early Intervention. From 1/1/2026 the second diagnostic pathway (sole-diagnosis Down syndrome) rides the same age structure. MBHP applies this baseline unchanged — it is the state program's own vendor.[8]
The standard form names them, and the list is broader than "send them to a developmental pediatrician." For autism it requires "A comprehensive assessment completed by a licensed physician (i.e. PCP, etc.), advanced practice registered nurse, physician's assistant, or psychologist experienced in the diagnosis and treatment of ASD with developmental or child/adolescent experience which aligns with DSM criteria across ASD core deficits." For the 1/1/2026 pathway it requires instead "A diagnosis of Down Syndrome (Trisomy 21) confirmed by genetic testing." Note the two signatures are different people: the diagnostician writes the assessment, while the form itself "should" be completed by the BCBA rendering and/or supervising the services — an analyst the performance specification requires to be a LABA licensed under 262 CMR 10.00.[7][5]
No instrument is mandated. The standard form requires a comprehensive assessment "which aligns with DSM criteria across ASD core deficits" without naming ADOS-2, ADI-R, CARS-2 or any other tool, and the performance specification names no diagnostic battery either; the Down syndrome pathway replaces the instrument question entirely with genetic testing. Massachusetts puts its measurement requirement downstream of intake instead — in progress documentation and medical-necessity review, not in the diagnostic gate.[7][5]
No referral and no physician order is a condition of authorization. The Massachusetts Standard ABA PA Form has no referral field and is completed by the rendering or supervising BCBA/LABA, and the performance specification's referral language is about timeliness rather than permission: "Fourteen calendar days from referral is the Medicaid standard of timely provision for services established in accordance with 42 CFR 441.56(e)," with a waitlist duty (and an obligation to hand caregivers other regional providers' contact information) where the provider cannot start inside it. What the state does require is PCP evidence in the chart rather than at the door: the complete medical record must hold "Referral and assessment documentation" and "Documentation confirming physical examinations by a PCP," and the continued-services pages ask for a dated primary-care care-coordination entry.[5][7]
Permitted at the family's request, with no code list and no POS rule. The ABA provider "may deliver services and consultation via a Health Insurance Portability and Accessibility Act (HIPAA)-compliant telehealth platform at the parent/caregiver's request and if the service can be effectively delivered via telehealth as part of the intervention when appropriate," with the rationale documented and the documentation reflecting "clinical considerations for appropriateness across any service components being delivered via telehealth." Two guardrails ride along: telehealth "must not replace in-person availability," and the member or family "may rescind consent for telehealth at any time without risk of interruption of services." No per-code restriction, modifier or place-of-service code is published. This is MBHP's own specification — the document every other Massachusetts plan is measured against.[5]
Ask the plan: Which CPT codes and place-of-service codes the member's BH administrator actually pays for telehealth — the performance specification sets the clinical conditions, not the billing.
MBHP is the behavioral-health vendor behind MassHealth's PCC Plan / Prepaid Inpatient Health Plan (PIHP) model. The federal managed-care authorization rule covers every "MCO, PIHP, or PAHP," so it binds MBHP's ABA decisions. For rating periods that start on or after January 1, 2026, a standard decision is due "as expeditiously as the enrollee's condition requires" and within state-set timeframes that "may not exceed 7 calendar days after receiving the request for service" (it was 14 before 2026). That can be extended "up to 14 additional calendar days" if the family or provider asks, or if the plan justifies needing more information. An expedited decision is due "no later than 72 hours after receipt of the request for service." Expedited applies when the provider indicates that the standard clock "could seriously jeopardize the enrollee's life or health or ability to attain, maintain, or regain maximum function." The clock runs from receipt of the request. Once an initial authorization is approved, the performance specification gives the provider "two business days" to offer the family a face-to-face interview. It also counts the 14-day timely-start standard from the "point of authorization for onset of services." Neither the standard form nor the performance specification publishes a reauthorization lead time. Continued services are requested in up to 6-month windows. MBHP's own provider manual returned a "System Outage" page when fetched, so a shorter MBHP-specific clock cannot be ruled out. Nothing may be longer than the federal limit.[9][10][5][7]
Ask the plan: MBHP Provider Manual (masspartnership.com, "System Outage" when fetched 9/2026) or Carelon/MBHP provider relations: MBHP's own ABA decision clock and reauthorization lead time.
MBHP pays as MassHealth, so MassHealth pays last. MassHealth's rule puts the work on the provider. Under 130 CMR 450.316, "diligent efforts" mean asking the family about other insurance and checking EVS on each date of service, "submitting claims to all insurers," and "complying with the insurer's billing and authorization requirements." If the primary denies for "failure to obtain prior authorization" or for "providing services outside the service network," MassHealth treats that as a failure of diligent efforts. MassHealth also pays nothing if the provider "did not participate in the member's other health insurance plan." A claim for a service another insurer may cover is denied "unless the claim is accompanied by a final disposition from each insurer" (450.317(D)). MassHealth then pays no more than the member's remaining copay, coinsurance and deductible, capped at its own rate. In practice, be in the commercial plan's network, get its ABA authorization, bill it first, then bill MBHP for the balance with the EOB. MassHealth "will cover co-payments that are not being paid by the primary insurer, even if that provider is not in network with MBHP." However, "providers who are not in network with MBHP will need to obtain a single-case or out-of-network agreement in order for co-payments to be paid." TRICARE pays before MassHealth: "By law, TRICARE pays after all other health insurance, except for: Medicaid." The federal pay-and-chase exception for preventive pediatric (EPSDT) services is not applied to ABA in any source read.[11][12][13][8][14][15]
Ask the plan: MBHP (Carelon) provider relations: whether MBHP also requires its own ABA PA when MassHealth is secondary, and its secondary-claim filing window. The MBHP Provider Manual was offline ("System Outage") when checked.
Not published. Neither the Massachusetts Standard ABA PA Form nor the Carelon/MBHP performance specification sets a maximum age for the diagnostic evaluation — the form asks for the current ICD-10 diagnosis and, on a "Request for initial evaluation," a copy of the comprehensive assessment, but names no recency window. What the form does date is utilization, not diagnosis: the continued-services page makes the BCBA attest whether at least 75% of the previously authorized direct-service hours were used.[7][5]
Blocked on: Carelon/MBHP provider relations via ProviderConnect; MassHealth's ABA Provider FAQ on mass.gov is 403 to automated clients and needs human retrieval.
Coverage decides whether Massachusetts Behavioral Health Partnership (MBHP) pays. These decide whether the claim survives: how sessions must be staffed and supervised, what may be billed concurrently, the per-day ceilings, who signs the note, where the service is payable, and whose NPI the claim goes out under.
MBHP is the author of the rule everyone else in Massachusetts is measured against. LABA supervision must be delivered to Behavior Technician-level staff “during direct service with the Member, as clinically indicated but no less than 10 percent of direct service hours and should not exceed 25 percent of direct hours without documented clinical rationale.” For members engaged in 10 hours or less of direct treatment per month, the LABA must deliver a minimum of one hour of direct supervision per month. The Behavior Technician works under the direct supervision of a LABA licensed per 262 CMR 10.00 — a BCBA certificate alone does not qualify — and the provider agency must ensure LABAs supervise all BTs and that every staff member has had a background record check.[5]
Massachusetts is a no-cap state that nonetheless has one published per-day number. There are no annual, lifetime or unit-of-service ceilings on the EPSDT benefit, and 101 CMR 358.03 is a rate regulation, not a limit regulation — it fixes per-15-minute rates and states they are “full compensation” including “necessary administration and professional supervision associated with patient care.” The only per-day cap in the performance specification is for group instruction, which “may occur up to 4.5 hours a day as clinically indicated, in groups of 2-8 Members.” No per-code MUE regime is published, so what bites in practice is medical-necessity review and the supervision-ratio audit, not a unit edit.[5][6]
Both clinicians document, and the spec says what the note must contain rather than who countersigns it. “The LABA and BT document each contact in a progress report or notes in the ABA provider’s file for the Member,” and session notes must include how treatment time was utilized, the treatment interventions utilized, and the member’s response to treatment. The complete record must also hold referral and assessment documentation, treatment plans and progress reports, “evidence of supervision and training, including policies, procedures, and implementation,” the IEP and IFSP where applicable, and documentation confirming PCP physical examinations. No co-signature requirement and no signing deadline are stated.[5]
Home and community, with school carved out. ABA “is delivered by a contracted and credentialed provider in a variety of settings within a Member’s home and community,” and “services provided in a school setting are distinct and separate from those covered by the health plan and are typically covered by the educational system’s special education resources as part of the Individualized Education Program (IEP) pursuant to Public Law 94-142.” Providers “must not direct, limit, or discourage access to other medically necessary or school-based services.” Transition planning contemplates moving a member “from a center based setting to home/community settings,” so centers are in scope. Group homes are not addressed.[5]
Ask the plan: Group homes are not addressed in the specification — confirm with MBHP before scheduling.
Not resolved in the published Massachusetts documents. The performance specification does carry one concurrency prohibition, but it is about siblings, not codes: in group caregiver training, “providers may not bill concurrently for services delivered to multiple children from the same family. When a parent/caregiver has more than one child receiving services, only one child’s session may be billed at a time.” The spec requires LABA supervision to be delivered during the BT’s direct service with the member, and MassHealth’s CY2024 audit measured 97155 hours against 97153 hours — but neither document states in terms that both codes may be billed for the same clock time.[5]
Ask the plan: Carelon/MBHP provider relations via ProviderConnect.
Not published. Neither 101 CMR 358 nor the ABA performance specification names whose NPI carries the claim for technician-delivered 97153, and the rate regulation is explicitly single-tier — one rate per code, no credential-level modifiers — so there is no modifier to signal the renderer.[5]
Ask the plan: Carelon/MBHP provider relations; the performance specification governs service delivery, not claim identity.
MassHealth members on the PCC Plan and the Primary Care ACOs, plus Health New England's BeHealthy Partnership — everyone whose plan doesn't bring its own BH administrator. It applies the state-baseline criteria and the Massachusetts Standard ABA PA Form.
Through Carelon's ProviderConnect portal at providers.masspartnership.com, using the Massachusetts Standard ABA PA Form; authorizations run in up to 6-month periods. Provider line: 1-800-495-0086.
The state schedule is the reference baseline, but whether MBHP pays exactly those rates is a contract question — verify in your MBHP agreement.
Payer policies change frequently and vary by plan, state, and funding type. This guide was compiled from the sources above and last reviewed September 2026; it is general information, not billing, legal, or clinical advice. Always verify current requirements against the payer's live policy and a benefits check for the specific member.
Carelu collects all of this automatically.
Every ID, document, and detail this payer requires — gathered conversationally the moment a family reaches out, with insurance verified before your team touches the file.
Get a Demo