In the United States, Medicaid payments for ABA therapy—a service for children with autism—more than tripled over the past four years, reaching $2.2 billion in 2023 .
Rapid growth of applied behavior analysis (ABA) providers has driven Medicaid expenditures to $2.2 billion in 2023, prompting heightened scrutiny of clinic practices and concerns for preschool‑age children.
In the United States, Medicaid payments for ABA therapy—a service for children with autism—more than tripled over the past four years, reaching $2.2 billion in 2023 [1]. The increase coincides with a proliferation of autism‑focused clinics, including the Crawfordsville, Indiana, branch of Piece by Piece Autism Centers, which reported the highest per‑patient spending among state providers in 2023 [3]. A client alert issued on March 12, 2026, highlighted intensified oversight of Medicaid‑funded ABA services amid reports of potential abuse [4].
The expansion involves multiple stakeholders: for‑profit and nonprofit ABA clinics such as Piece by Piece, state Medicaid agencies, families of children diagnosed with autism, and regulatory bodies at both state and federal levels [1][3][4]. Growth has been driven by rising autism diagnoses, state insurance mandates that require coverage of ABA, and a federal Medicaid rule that obligates states to fund the therapy for eligible low‑income children [1][2]. Inconsistent oversight and billing practices have raised concerns that some providers may be inflating services or delivering care that does not align with best‑practice standards [4][1].
Expansion of ABA Clinics and Medicaid Expenditures
Medicaid’s share of ABA therapy funding grew from approximately $700 million in 2019 to $2.2 billion in 2023, reflecting a threefold increase within a four‑year span [2][3]. The surge aligns with a broader rise in autism diagnoses, which the Centers for Disease Control and Prevention reported increasing by roughly 15 percent annually over the same period [1]. State insurance mandates, adopted by more than 30 states, require private insurers to cover ABA, creating a parallel market that reinforces demand for Medicaid reimbursement when families qualify for public assistance [1][2].
Provider concentration is evident in certain locales. The Crawfordsville, Indiana, office of Piece by Piece Autism Centers emerged as the top Medicaid biller per patient in 2023, with an average claim size exceeding $30,000 per child, markedly higher than the national average [3]. Similar patterns have been observed in other states, where clusters of clinics have opened near Medicaid enrollment hubs, leveraging the federal requirement that states cover ABA for eligible children [1][2].
Growth has been driven by rising autism diagnoses, state insurance mandates that require coverage of ABA, and a federal Medicaid rule that obligates states to fund the therapy for eligible low‑income children [1][2].
Regulatory Concerns and Medicaid Oversight
Medicaid Spending on ABA Therapy Surges as Autism Clinics Expand Across the United States
In response to the rapid expansion, state Medicaid agencies and the Centers for Medicare & Medicaid Services (CMS) have initiated audits and policy reviews aimed at curbing potential fraud and ensuring service quality [4]. The March 12, 2026, client alert from a national health‑law firm outlined three primary areas of scrutiny: verification of patient eligibility, adherence to individualized treatment plans, and compliance with billing limits set by state Medicaid contracts [4].
The Wall Street Journal investigation cited in multiple reports identified irregularities such as prolonged therapy hours beyond clinically recommended durations and billing for services not documented in patient records [3][1]. These findings have prompted several states to introduce stricter prior‑authorization requirements and to require clinics to submit detailed progress notes for each claim [4].
Impact on Preschoolers and Families
For families of preschool‑age children with autism, the heightened focus on Medicaid spending translates into both opportunities and challenges. Expanded coverage ensures that low‑income families can access ABA therapy without out‑of‑pocket costs, a benefit that aligns with the federal Medicaid mandate [1][2]. However, concerns arise when therapy intensity exceeds evidence‑based recommendations, potentially leading to fatigue, reduced engagement, or diminished developmental gains for young children [1][4].
State budget officials report that the $2.2 billion expenditure represents a growing share of Medicaid’s overall budget, prompting legislators to consider reforms that balance fiscal responsibility with access to essential services [2][3]. Any policy adjustments—such as tighter billing caps or revised eligibility criteria—could affect the availability of ABA providers, especially in rural areas where clinic density is lower [4]. Families may need to navigate more complex authorization processes and could experience delays in initiating or continuing therapy [1].
Key Facts
What: Medicaid payments for ABA therapy rose to $2.2 billion in 2023 as autism clinics expanded nationwide.
However, concerns arise when therapy intensity exceeds evidence‑based recommendations, potentially leading to fatigue, reduced engagement, or diminished developmental gains for young children [1][4].
When: Growth observed over the past four years; heightened oversight noted in a March 12, 2026, client alert.
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