Applied behavior analysis (ABA) therapy is a behavior-based therapy that providers use with autistic children, usually in a clinic, at home or at school. Medicaid covers medically necessary autism services for people under 21 under federal EPSDT rules, but each state decides how, and CMS does not require any one treatment.
Carevo does not diagnose, give clinical advice or tell you whether ABA suits a child. That decision belongs to the child, the family and the clinicians who know them. This guide describes the service plainly and shows how to compare providers and understand coverage.
What ABA therapy is and how it works
CMS's August 2026 Medicaid toolkit describes ABA as an evidence-based behavior therapy for autism spectrum disorder that applies principles of learning and behavior to address a child's needs. It describes how the work is done:
- Direct observation and measurement of behavior in real-life contexts, rather than relying only on reported symptoms
- Ongoing data collection to understand how the environment affects behavior, and to monitor whether strategies are helping
- Goals and teaching strategies adjusted over time based on the child's progress
- Gradual skill building through small, achievable steps
- Teaching in areas such as communication, social participation, self-care, play and daily living
The toolkit says that contemporary ABA often embeds interventions into everyday activities, and that an aim is for a child to use a skill across different routines, people and settings, not only in a session. It also says ABA involves collaboration with families and caregivers.
The toolkit adds caveats. ABA is one of several intervention approaches and not the only one. The toolkit lists methodological and ethical critiques, including that a focus on observable actions may not account for internal states and may reward compliance over autonomy, and notes that the cost-effectiveness of intensive ABA-based intervention has been questioned. Whether ABA is a good fit should rest on an individualized assessment.
CDC groups autism treatments into behavioral, developmental, educational, social-relational, pharmacological, psychological and complementary approaches. It names ABA as a notable behavioral treatment. CDC says there are no medications that treat the core symptoms of autism spectrum disorder, though medication can help with co-occurring symptoms such as anxiety.
Who ABA therapy is used with
ABA is used with children and youth who have an autism spectrum disorder diagnosis. The toolkit says diagnosis should be completed by qualified, licensed medical providers such as developmental pediatricians. A diagnosis is a medical question for the child's doctors.
CDC says treatments can be given in education, health, community or home settings or a combination, and that the right approach depends on the individual's needs. For very young children CDC describes the Early Start Denver Model, a developmental approach based on ABA principles, used with children 12 to 48 months of age.
What an ABA treatment plan includes
The toolkit says an individualized treatment plan (ITP) should be completed before services begin, typically by a behavior analyst. A behavior analyst is described as a professional with at least a master's degree who is qualified by education, training, state licensure or national certification. The plan should include individual goals, approaches, evaluations to measure progress, and the scope, intensity, staffing, settings and expected outcomes. Details the toolkit lists as good documentation include:
- Assessment results and a reassessment schedule
- Measurable goals for both the child and the caregiver, with mastery criteria and baselines
- Planned treatment activities and hours, with direct ABA hours defined as separate from supervision and caregiver training
- Caregiver training documented separately
The toolkit also warns states about plans that look copy-and-pasted across all children in a practice. For parents, the practical point is to ask to see the plan, and to check that it speaks about your child.
Scope can be focused (a limited number of skills or specific high-risk behaviors) or comprehensive (many skills across several areas). ABA is typically provided one to one with a technician, with small-group work added when appropriate, often to build social skills.
ABA vs other therapies and supports
- Speech-language and occupational therapy. CDC says the most common developmental therapy for autism is speech and language therapy, and that occupational therapy teaches skills that help a person live as independently as possible. These are separate services, often alongside ABA.
- School services. The toolkit says an IEP or 504 plan does not automatically make a service medically necessary for Medicaid, and states may decide some educational services do not meet Medicaid medical necessity criteria.
- IDD services. Group homes, day programs and in-home support for people with intellectual and developmental disabilities, mostly paid for through Medicaid waivers.
- Respite care. A break for the caregiver. ABA sessions are not respite.
- Home care. Non-medical help with daily tasks. ABA is a planned therapy with goals and data.
Who pays for ABA therapy
Medicaid and CHIP. The Medicaid.gov FAQ says CMS has not mandated ABA, and that states are expected to adhere to long-standing EPSDT obligations for individuals from birth to 21 years, including providing medically necessary services for the treatment of autism. The toolkit adds that there is no universal national pathway. Requirements are set by each state's Medicaid program. Some states require a completed diagnostic evaluation and an individualized treatment plan as part of a prior authorization request. Medical necessity is typically determined after the plan is developed and before treatment starts, though timing varies by state and managed care plan. Read Medicaid and the state programs.
Why oversight is tight. The toolkit says Medicaid data show that between 2021 and 2025 there was a 189 percent increase in the number of children with an autism diagnosis who received ABA, and a 421 percent increase in spending on ABA for them. It also says investigations have led to prosecutions pointing to fraud, waste and abuse in the ABA industry. This is why states use prior authorization and documentation review, which can affect how fast a child starts services. CMS wrote the toolkit to support state Medicaid and CHIP agencies in making decisions about ABA coverage.
Private health plans. The sources we read focus on Medicaid and CHIP. For a private plan, call the plan and ask whether it covers ABA, which providers are in network, what prior authorization is needed and what you owe.
Adults. EPSDT applies to people under 21. For adults, coverage depends on the state and the plan, so ask the state Medicaid agency or the plan.
Medicare. We found nothing in the sources read for this guide that describes Medicare coverage of ABA, so ask Medicare or your plan directly. Medicare does not pay for long-term care, see what Medicare pays for.
Private pay. Some families pay out of pocket, either while waiting for approval or where a plan does not cover the service. See private pay.
What drives the cost of ABA therapy
We do not quote prices, because rates differ by state and payer, and no national figure fits. What changes the bill:
- Hours of direct therapy per week and how long the plan runs
- The mix of staff: technician hours versus behavior analyst supervision
- Setting: clinic, home or school
- Who is paying and what they authorize
- Whether caregiver training and assessments are billed separately
The toolkit describes parent and caregiver involvement as a critical component of ABA, including taking part in treatment plan development, goal setting, outcome assessments and regular communication with the ABA team. Ask providers how much of your time they expect.
How ABA providers are overseen
There is no CMS star rating for ABA, and our listings carry none. The toolkit discusses provider certification, state licensure and state provider enrollment requirements, and prior authorization and review by the Medicaid agency or managed care plan. Those requirements differ by state, so ask your state Medicaid agency or plan what a provider must hold to bill.
Our care ratings by state and methodology explain which federal data we use and where there is none for this service.
How to choose an ABA provider
- Ask your child's doctor or care team whether ABA is part of the plan and what the diagnosis paperwork needs.
- Call your state Medicaid agency or health plan to ask which providers are in network and what authorization is required.
- Ask each provider who writes the treatment plan, who delivers sessions and how they are supervised.
- Ask to see a sample treatment plan with names removed, and ask how goals are measured.
- Visit the clinic, or ask how home-based sessions work.
- Ask how the provider works with school and other therapists.
Questions to ask each ABA provider
- What credentials do the behavior analyst and the technicians hold, and who supervises whom?
- How many direct hours a week do you propose, and why?
- How do you set goals with us, and how often do we review them?
- What data will you share, and how often?
- What parent or caregiver training is included, and how many hours do you expect from us?
- What happens if my child is unwell, or a session is missed?
- How will you coordinate with the school, speech therapist and doctor?
- How is discharge decided?
Red flags when choosing a provider
- Promises of a specific outcome before an assessment
- A treatment plan that reads the same as other children's plans
- Pressure to start the maximum number of hours with no explanation
- Unclear answers about credentials and supervision
- No data or progress reports shared with you
- A provider that will not explain what insurance or Medicaid pays for and what you owe
If you suspect billing for sessions that did not happen, tell the plan or your state Medicaid agency.
About the providers listed below
Carevo is a directory and connection platform. It does not diagnose, provide therapy, advise on treatment or vouch for any provider. The lists below come from public data and provider records. Check each provider yourself, and use get matched if you want help finding options near you.