ABA Audits Are Intensifying Nationwide — Here’s How Providers Can Protect Revenue and Prove Medical Necessity

ABA providers nationwide are sounding the alarm about more frequent and further reaching audits focused on medical necessity documentation.

Applied behavior analysis therapy is considered the gold standard of autism therapy, but it’s expensive, time consuming, and involves significant resources. Requested therapy can range between 10-25 hours a week for more focused care or 30-40 hours for a comprehensive care plan, according to guidelines published by The Council of Autism Service Providers.

Applying stringent conditions to ABA approvals has been a longtime strategy held by some private insurers looking to cut costs. Reporting by Propublica in 2024 found that UnitedHealth Group’s Optum, for example, held a policy of authorizing less ABA units than requested — and made those denials based on “rigorous” reviews of medical necessity documentation.

Now, state Medicaid plans are likewise taking a second look at the costs associated with providing ABA, in part to offset the looming $1 trillion of Medicaid cuts ushered in by the passage of the One Big Beautiful Bill Act this summer.

North Carolina attempted to cut payments to ABA providers by 10%, Nebraska cut payments for some providers by nearly 50%, and several other states are weighing reductions for ABA services, according to reports from NPR.

Providers are feeling the heat. As payers look into the treatment, they’re asking more questions about what the care is, who it is for, and what guardrails are in place around funding authorizations.

“I’ve seen a notable increase in scrutiny across the board,” said Sarah Powell, BCBA, LBA and founder of Blueprint ABA Consulting in San Antonio, Texas. She shared at a recent Brellium webinar that healthcare owners have flooded ABA group chats since the start of the year to warn of new, large-scale audits.

"What I think has changed is not necessarily the rules governing ABA. It's the enforcement," Powell said. The consequences are real. "If you fail documentation audits, payers can recoup tens of thousands of dollars — that could be devastating for smaller organizations."

As scrutiny intensifies, here are steps providers can take today to shore up their documentation systems and processes to increase confidence ahead of billing.

Documentation errors that trigger audits

Auditors are looking for clinical reasoning to back up care plans, Powell said. It’s not enough to submit a complete session note or treatment plan — ABA providers must demonstrate a clear logical chain, complete with data, justifying the treatment.

That logical chain should begin with the inclusion of a complete medical history, detailing the autism diagnosis level, the diagnosing clinician, and corresponding date.

ABA therapy focuses on patients’ progress toward goals: both increasing pro-social behaviors or decreasing challenging, maladaptive behaviors. Auditors check that each goal is measurable and tied to credible datasets.

Therapists can include frequency counts, or simple tallies of behaviors, or ABC data which tracks Antecedent-Behavior-Consequence chains. Both metrics help form a more holistic picture of a patient’s progress and can guide treatment planning.

Vague language, on the other hand, is a tell-tale sign that providers’ documentation will fall short during review. If goals lack specificity or are unattainable for the patient’s age or ASD severity, they may trigger denials.

In session notes, providers must also detail what interventions were used to make progress toward goals, how the patient responded, and plans for next steps.

“We don’t want the auditor to assume anything. We want the story to be very clear,” said Powell, noting that ambiguity is the gateway to denials.

Master medical necessity documentation narratives

Revamping session note templates, investing in staff training, and banishing copy/paste from documentation workflows can help reduce these errors.

Powell recommends that practices consider their payer network, identify the insurer most likely to attempt to recoup funds, and design session note templates accordingly.

“Look at your strictest payer’s guidelines and align all your notes and treatment plan templates to them,” said Powell.

But don’t stop there. Powell stressed how critical it is to communicate expectations through a team-wide training. As she put it: “Everyone needs to know the ‘why’ behind the new sections.”

Even if ABA practices keep their note templates standard year-to-year, Powell recommends offering regular compliance training for staff ranging from behavior techs to clinical supervisors. It is the best way to ensure everyone stays fresh on compliance requirements, according to Powell, and can help save valuable time by reducing the number of notes that need revisions.

Documenting therapists and behavior technicians should also stop using copy/paste for notes today, urged Powell. Although the short cut saves time upfront, it is an audit nightmare waiting to happen. As payers adopt technology to aid their reviews, they are swiftly catching copy/paste notes.

“Individualization is key,” Powell said. “Every session should be unique to the client’s experience and progress.”

Proactive chart review can cut audit anxiety entirely

ABA providers can leverage all of these strategies and still wonder: Have we caught every issue prior to billing?

Powell said that her ABA clients try their best to review notes, but can’t keep up with the volume.

“It's very hard to look through every single session note that comes through. It's almost impossible,” she said. “Sure, you can have your BCBAs help do it, but that's work that's not billable.”

Powell recommended ABA providers consider partnering with Brellium, which automatically audits 100% of session notes for completeness and compliance. Brellium leverages AI to run daily audits, flag problems in real time, and send feedback to staff via automated emails.

Staff can fix session notes or treatment plans on the same day.

ABA providers have used Brellium feedback reports to identify opportunities for organization-wide training, verify notes created in partnership with AI scribes, and scale compliance oversight without adding headcount.

Plus, investing in good documentation could turn from a revenue protection initiative to a revenue generator.

As Powell put it: “A company I worked with got audited. They've passed all their audits. And guess what? That insurance company sends clients their way now. If you have good documentation, payers are gonna recommend you to their clients.”

See how ABA practices like yours are leveraging Brellium here, and catch our full conversation with Sarah Powell here.