Medicaid spending on a top autism therapy has surged past $5 billion, drawing scrutiny over fraud and how taxpayer dollars are being spent.Applied Behavior Analysis (ABA), one of the most common treatments for children with autism, uses structured, one-on-one sessions to build communication, social and daily living skills. Between 2018 and 2024, Medicaid providers paid out more than $5.15 billion under an ABA billing code. Three providers received roughly $685 million in Medicaid reimbursements during that period.The data alone does not explain why those reimbursements were so high, and billin...