Top 5 Denials in ABA Billing and How to Fix Them
Successful ABA practices understand the need to reduce claim denials. Insurance denials harm cash flow, hampering an ABA practice’s ability to pay for staff, resources, rent, and other overhead expenses. Even when a Denial is correctable, correcting, and resubmitting claim costs valuable time and resources.
As such, understanding what claims are likely to be denied and how to respond is crucial. Here are the top five pitfalls to avoid in ABA billing and reducing denials.
Eligibility Expiration
Even when the client is signed up to an ABA-friendly plan, enrolled individuals may unknowingly have passed an expiration date. For example, many states require coverage up till an individual is 18 years old. And some states cut requirements off as low as six years of age. In such cases, there is a good chance the insurer will take the minimum age legally available to them.
Solve these cases with careful attention to detail. Before administering a service, your office needs to ensure that the client is eligible. Proceed only once your team has confirmed the insurer covers the service.
The Client’s Plan does not cover services
While most states require ABA coverage, only some plans need to provide that coverage. For example, several states have no ABA requirements for employer-sponsored plans with fewer than 50 employees.
Regardless of their child’s needs, if a parent has a health plan with no ABA coverage, their insurer will deny claims. Employing a reliable billing system helps identify easily overlooked aspects that can increase claim acceptance rates.
Failure to get a referral from a Health Professional
States only mandates coverage for medically necessary conditions. When familiar with local requirements, establishing medical necessity is simple. Ensure the child has seen a certified professional that the state recognizes as a competent authority. Next, get a written referral from this professional and include it in the Prior-Authorization request you send to the insurer.
Change in Network Coverage
Some state laws demand insurers provide a good network of coverage for their members. Despite these efforts, insurers will often change what services they cover without the plan holder knowing. This practice frequently results in a customer’s health plan no longer offering adequate coverage.
ABA therapy providers have a responsibility to establish coverage before offering services. However, many offices will note that the service was covered last time for a returning client and fail to check for updates. This shortcut can negatively impact the relationship between a client and the ABA provider. Be consistent with coverage inspection to avoid time-costly denials.
Mistakes in Documentation
Simple errors, such as typos, frequently result in denials. While these errors are fixable, they often take a frustrating amount of time to handle. Additionally, they force ABA providers to spend extra time and labour correcting the mistake. With proper use of technology, providers can streamline the administration process and avoid such manual errors.
General Tips to Create Accepted Insurance Claims
The level of detail insurers provides for denials vary. Some errors come with annotations, while others lack comments. Inexperienced staff members frequently write off these denials. Make sure you have an online workspace that analyses and categorizes different mistakes. This process is invaluable at ensuring consistency across your staff and consistency of response to each type of denial.
Your practice must understand what mistakes are most common and deploy suitable workers to fix them. For example, assign one employee to specialize and search for minor errors such as typos. Quickly removing these denials frees up the remainder of your team to focus on more significant errors.
Plutus Health makes it easier for ABA practices to avoid denials. We use a detailed denials management strategy for each ABA customer. We find out why the claim was denied, and we quickly correct the issue — preventing the denial from reappearing in the future. If you struggle with billing, collections, and denial management, our expert team takes care to get the fastest reimbursement possible and increase your practice’s cash flow and performance.
Key Takeaways
1. Clients inadvertently pass a plan’s expiration date.
2. A plan does not cover whatever service the practice has performed.
3. Medical necessity is not established or Prior-Authorization not sent to the insurer.
4. Network coverage changes without the member’s knowledge.
5. Administration errors cause delays in the claim adjudication process.
6. Section your team into specialized units that can quickly act on specific denials.
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FAQs


ABA providers are grappling with high staff turnover (up to 65%), rising burnout, administrative overload, and stagnant reimbursement rates. These challenges directly impact care continuity, clinical outcomes, and operational performance.


Operational inefficiency costs ABA teams up to 10 hours per staff member per week, contributing to burnout, denied claims, and longer accounts receivable (A/R) cycles. These inefficiencies ultimately result in reduced revenue and patient dissatisfaction.


Burnout leads to costly turnover, lower client retention, and decreased productivity. Recruiting and replacing a BCBA or RBT can cost up to $5,000 per hire, plus months of lost revenue and disruption to morale.


High-performing ABA organizations invest in clear career pathways for BCBAs and RBTs, align compensation with market benchmarks, and foster peer-led mentorship, flexible schedules, and wellness programs.


Automation tools like Plutus Health's Zeus streamline eligibility verification, denial management, and billing, reducing manual workloads by 5–10 hours weekly per clinician and improving clean claim rates by 95%.


Outsourcing revenue cycle management can improve collections, reduce denials by up to 30%, and free clinicians from billing-related admin tasks, resulting in better client care and financial outcomes.


One $200 million ABA network partnered with Plutus Health to automate eligibility and accounts receivable (A/R) processes. The result: $2M reduction in legacy A/R and a 97% Net Collection Rate.


By improving operational efficiency, investing in technology, and ensuring workforce stability, ABA leaders can align outcomes with reimbursement. Plutus Health supports this transition with scalable RCM and automation strategies.
FAQs


ABA therapy billing is the process of submitting claims to insurance or Medicaid for Applied Behavior Analysis services provided to individuals with autism or developmental disorders. It includes using correct CPT codes, proper documentation, and adherence to payer-specific policies.


Common CPT codes for ABA therapy in 2025 include:
- 97151 – Assessment and treatment planning
- 97153 – Direct therapy with the patient
- 97155 – Supervision and modification of behavior plan
- 97156 – Family adaptive training
- Always check with payers for any annual changes.


To bill Medicaid for ABA services, providers must ensure credentialing is complete, services are pre-authorized, and claims use the correct codes and modifiers. Medicaid requirements vary by state, so always follow state-specific billing rules.


Common ABA billing mistakes include:
- Incorrect or missing CPT codesplan
- Lack of documentation or treatment
- Uncredentialed providers rendering services
- Submitting duplicate or late claims


Without proper credentialing, providers can’t get reimbursed. Insurance and Medicaid require that BCBAs, RBTs, and organizations are credentialed and contracted. Delays in credentialing often cause revenue losses and claim rejections.
FAQs


CMS proposes a 2.4% increase in Medicare ASC payment rates, contingent on meeting ASCQR quality reporting requirements. Plutus Health helps ASCs meet these compliance benchmarks by integrating quality reporting data into RCM workflows, ensuring eligibility for full payment updates.


The ASC Covered Procedures List will expand by 547 procedures, including cardiology, spine, and vascular surgeries. Plutus Health supports expansion into new service lines by customizing RCM processes for high-acuity procedures, minimizing claim denials during the transition.


Site-neutrality narrows the payment gap with hospital outpatient departments, enhancing ASCs' cost-efficiency appeal. Plutus Health helps leverage this advantage in payer negotiations by providing performance dashboards and cost-justification analytics to secure stronger reimbursement terms.


Complex procedures increase denial risk and slow cash flow. Plutus Health's automation-first RCM model delivers 95%+ clean claim rates, reduces A/R days, and safeguards margins, even as your case mix becomes more complex.