The short version: The core applied behavior analysis (ABA) CPT codes are 97151, 97152, 0362T, 97153, 97154, 97155, 97156, 97157, 97158, and 0373T. They separate assessment from treatment and technician-delivered services from those a qualified professional performs, and every one is reported in 15-minute units.
Getting the applied behavior analysis CPT codes right is the difference between a clean claim and a denial or a clawback. The adaptive behavior code set gave ABA a dedicated structure, but each code carries its own rules about who can deliver the service and what the note must prove. Below are the ten codes that make up most ABA billing, what each one covers, who performs it, and the documentation point that keeps it compliant. Rates are set by each payer, so this focuses on definitions and compliance rather than dollars.
97151: Behavior identification assessment
Who performs it: A qualified health care professional (QHP), such as a BCBA or licensed clinician.
This is the foundational assessment that identifies target behaviors and builds the treatment plan, covering both direct time with the client and caregivers and the analysis, scoring, and report writing behind it. The report and plan need to justify medical necessity and the service hours requested, because payers tie authorization to them.
97152: Behavior identification supporting assessment
Who performs it: One technician, often an RBT, under the direction of the QHP.
This code covers direct assessment activities, such as running trials that feed the QHP evaluation, face-to-face with the client. Document the supervising professional's direction and connect the technician's data to the assessment the QHP ultimately signs.
0362T: Behavior identification supporting assessment, two or more technicians
Who performs it: Two or more technicians with the QHP on site directing.
A Category III code for supporting assessment of a patient who exhibits destructive behavior, performed in an environment customized to that behavior. The note must show the on-site professional, the multiple-technician setup, and the severity that justifies it. This code is scheduled for deletion effective January 1, 2027, so confirm current payer acceptance.
97153: Adaptive behavior treatment by protocol
Who performs it: A technician under the direction of the QHP, face-to-face with one client.
This is the direct one-to-one therapy that delivers the treatment plan as written, and it is usually the highest-volume code in an ABA program. Each unit needs a session note tied to the plan, the supervising professional identified, and start and stop times that match the units billed.
97154: Group adaptive behavior treatment by protocol
Who performs it: A technician under QHP direction, face-to-face with two or more clients.
This code delivers protocol-driven treatment in a group setting. The note should show the group format, each client's participation, and the staffing ratio, because payers treat group and individual services differently.
97155: Adaptive behavior treatment with protocol modification
Who performs it: A QHP, which may include simultaneous direction of a technician.
Here the professional adjusts the protocol in real time based on the client's progress. To separate it from 97153, the note has to capture the clinical reasoning for the modification, not just the presence of a supervisor.
97156: Family adaptive behavior treatment guidance
Who performs it: A QHP, with or without the client present, working with the caregivers.
This is caregiver or parent training that teaches families to carry out treatment strategies at home. Document who attended, the skills taught, and how they map to specific treatment plan goals.
97157: Multiple-family group adaptive behavior treatment guidance
Who performs it: A QHP, working with several families at once without the clients present.
This code covers caregiver guidance delivered to multiple families in a group. Record the multiple-family format and that clients were not present, and verify the benefit, since some payers limit the number of families in the group.
97158: Group adaptive behavior treatment with protocol modification
Who performs it: A QHP, face-to-face with a group of clients.
This is professional-delivered group treatment that includes protocol modification. Because it is a QHP service rather than technician-delivered group work, the note should document the modification reasoning and each client's response.
0373T: Adaptive behavior treatment with protocol modification, two or more technicians
Who performs it: Two or more technicians with the QHP on site directing.
A Category III code for intensive treatment of a patient with destructive behavior in a customized environment. It requires the same on-site direction and environment documentation as 0362T, and it is also scheduled for deletion effective January 1, 2027, so confirm its status before billing.
How to get ABA coding right
Accurate ABA coding comes down to three habits. First, match the person who delivered the service to the correct code, separating the technician codes (97152, 97153, 97154, 0362T, 0373T) from the QHP codes (97151, 97155, 97156, 97157, 97158). Second, make units match the clock, since every code here is billed in 15-minute increments and start and stop times are a frequent audit target. Third, keep a current payer grid for authorization limits, group-size rules, and concurrent billing, and track code-set changes such as the planned deletion of 0362T and 0373T effective January 1, 2027. Documentation of supervision and medical necessity should be visible on every claim.
How Adentris helps
Adentris is an AI platform for revenue integrity and documentation compliance built for behavioral health and substance use disorder programs, and ABA is exactly where its checks pay off. It works on top of the EHR you already use, connecting by API or HL7 where available with systems such as Alleva, Pimsy, Kipu, Epic, and Athenahealth, or through a secure web agent otherwise, so there is no migration. It reviews notes in real time and flags the elements ABA claims live and die on before submission, including medical necessity, treatment plan updates, group therapy attendance, service units, and signature timing, then drafts the correction for the clinician to accept. Compliance leaders get a live view of documentation risk across every site and program, and a paired appeals and denials module supports the claims that still get challenged. To see it on your own charts, book a 30-minute call with our team.
Related reading
- 10 Key Insights on CPT 97153 for Maximizing Revenue in ABA Therapy
- Best Practices for CPT Code 97155 to Enhance ABA Documentation Compliance
- 4 Best Practices for Behavioral Health Documentation Compliance
Frequently asked questions
What are the CPT codes for applied behavior analysis (ABA)?
The core applied behavior analysis CPT codes are 97151 and 97152 for assessment, 97153, 97154, 97155, 97156, 97157, and 97158 for treatment and guidance, and the Category III codes 0362T and 0373T for services involving two or more technicians and severe destructive behavior. Assessment codes establish the plan, while treatment codes deliver it. All of them are reported in 15-minute units.
What is the difference between CPT 97153 and 97155?
97153 is direct treatment delivered by a technician following the protocol as written, while 97155 is delivered by a qualified health care professional who modifies the protocol based on the client's progress. The key distinction in the record is clinical decision making: 97155 requires documented reasoning for the modification, not just supervision of a technician.
Are ABA CPT codes billed in 15-minute units?
Yes. Every code in the adaptive behavior set, from assessment through treatment and caregiver guidance, is a timed code reported in 15-minute units. Because of that, start and stop times that reconcile with the units billed are one of the most important compliance details in an ABA claim.
What do CPT 0362T and 0373T cover?
0362T and 0373T are Category III codes for assessment and treatment of patients with severe destructive behavior, delivered with two or more technicians while the qualified professional directs on site in a customized environment. They carry stricter documentation requirements, and both are scheduled for deletion effective January 1, 2027, so confirm payer acceptance before using them.
