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Federal Audit Finds $77.8 Million in Improper Colorado Medicaid Autism Payments, Orders $42.6 Million Refund

Auditors cite lax oversight of a fast-growing autism therapy market that relied on uncredentialed technicians.

Overview

  • Colorado must repay $42.6 million in federal funds after OIG found widespread improper Medicaid payments for applied behavior analysis in 2022–2023.
  • In a sample of 100 beneficiaries, auditors found at least one improper claim for every person reviewed, indicating systemic billing problems.
  • The review flagged services delivered by uncredentialed behavioral technicians as a key source of noncompliance with program rules.
  • Colorado’s Medicaid spending on ABA rose to $163.5 million in 2023 from $60.1 million in 2019 as the number of providers expanded.
  • The Colorado findings contribute to HHS OIG’s broader tally of $285.2 million in improper or potentially improper ABA payments, with the state ordered to conduct periodic statewide payment reviews as it contests aspects of the repayment calculation.