ABA billing codes can be complex, but understanding how to use them correctly is key to protecting your revenue, reducing claim denials, and staying aligned with payer requirements.
This overview breaks down the codes you use every day, explains how to apply them accurately, and highlights common mistakes to avoid so your billing process supports both compliance and consistent cash flow.
What Are ABA Billing Codes?
ABA billing codes are a standardized set of codes used to bill insurance companies for applied behavior analysis services. Most ABA services are billed using CPT® (Current Procedural Terminology) codes developed by the American Medical Association. These codes inform payers about the type of service provided, by whom, and for how long.
The correct code ensures you’re reimbursed appropriately. Incorrect code could result in delays, underpayment, or denials.
Common ABA Billing Codes You Should Know
Here are some of the most frequently used ABA billing codes in practice today:
97151 – Behavior identification assessment by a qualified healthcare professional
Used for initial assessments and treatment planning, typically conducted by a BCBA.
97153 – Adaptive behavior treatment by protocol
This is direct one-on-one therapy, typically delivered by an RBT under supervision.
97155 – Adaptive behavior treatment with protocol modification
Used when a BCBA is present to modify the program in real-time, often during a session.
97156 – Family adaptive behavior treatment guidance
Used for caregiver training and support. This is a crucial part of many ABA programs.
97157 – Multiple-family group adaptive behavior treatment guidance
Less common, but used in some group parent training settings.
97158 – Group adaptive behavior treatment
Is used when one technician is working with multiple clients simultaneously.
Each code has specific documentation requirements and supervision rules, so it’s crucial to stay up-to-date and consult each payer’s guidelines outlined in the provider Handbook.
Why ABA Billing Codes Matter
- Proper coding = proper payment. Underbilling leaves money on the table. Overbilling puts you at risk of recoupments or audits.
- Clean claims get paid faster. Correct coding reduces claim rejections and minimizes the need for back-and-forth communication with payers.
- You stay audit-ready. Clear documentation tied to the correct code shows that your services were medically necessary and delivered appropriately.
Common Mistakes ABA Providers Make
Even experienced providers can encounter errors with ABA billing codes. Some of the most common issues include:
Mixing up supervision vs. direct service codes is a common mistake when BCBAs bill directly.
Missing documentation to justify higher-level codes like assessments or program modifications.
Overlooking payer-specific billing rules: Some insurers have unique guidelines regarding which codes they accept, the number of units per day, or the required documentation for supervision. Missing these can cause delays.
Not coordinating with other providers: If a client is receiving ABA alongside other therapies, improper billing coordination can lead to coverage conflicts or denied claims.
Inconsistent use of time increments: Billing in complete units when sessions were shorter or not aligning documentation with billed timecan slow down your revenue cycle and put you at risk for compliance issues if audited.
Best Practices for Using ABA Billing Codes Correctly
To stay on top of your billing, try the following:
- Train your team regularly on code usage and documentation requirements.
- Stay updated with payer-specific guidelines; Yes, they vary!
- Use a billing platform that supports accurate code selection and claim tracking.
If you’re handling billing, ensure you set aside time each week to review payer updates and check for errors. The slightest mistake can lead to considerable delays.
How ABA Building Blocks Can Help
Our experts thoroughly understand ABA billing codes. We work with providers across the country, offering both full-service billing support and ABA billing training. We help practices:
- Choose the correct codes based on service delivery
- Navigate changing payer policies
- Reduce denials and improve collections
- Stay compliant and audit-ready
Want help ensuring your billing is accurate and your team knows exactly what to do?
We offer billing training and support to help you keep revenue steady and your business running smoothly.
Learn more about our billing services at ABA Building Blocks, or inquire directly to explore how we can support your team.
FAQ: ABA Billing Codes
Q: Do ABA billing codes vary by insurance company?
Yes. Most insurers use the same CPT codes, but their rules for how those codes can be used, such as who can bill them and the allowed hours, can vary. Always check the provider manual or payer guidelines for the most up-to-date information.
Q: Who can bill 97153 vs. 97155?
97153 is typically billed for direct therapy by a technician under the supervision of a BCBA. 97155 is used when a BCBA is actively involved during the session, modifying the plan or observing the client directly.
Q: Can parents be billed for missed sessions?
That depends on the payer and your cancellation policy. Many payers don’t allow you to bill insurance for no-shows, but some practices charge families directly. Ensure that your policy is clear and consistently applied.
Q: How do I know if I’m using the proper billing codes?
Start with your authorizations and the payer guidelines. If you’re unsure, work with a billing team or consultant who specializes in ABA. It’s worth getting it right from the beginning.
