The American Medical Association (AMA) officially released the 2027 Current Procedural Terminology (CPT) code set, introducing significant updates across healthcare, including six new Category I codes specifically designed for Applied Behavior Analysis (ABA) and adaptive behavior services. Taking effect on January 1, 2027, this release represents an important evolution in how practices describe clinical care, measure service intensity, and document Qualified Healthcare Professional (QHP) involvement.
Whenever billing codes change, it is natural for practice owners, clinical directors, and billing teams to wonder what the transition will look like in daily operations. The best way to approach the 2027 updates is not as a list of numbers to memorize, but as an opportunity for greater clinical specificity and better alignment across your entire practice.
Here is what ABA providers need to know about the 2027 CPT updates and how to start preparing with confidence.
What Is Changing with ABA CPT Codes in 2027?
The overall 2027 healthcare code release includes 299 new codes, 74 revisions, and 80 deletions across medical specialties. Within adaptive behavior services, six new Category I CPT codes join the existing code set, while temporary Category III T-codes are officially retired.
For ABA practices, the 2027 updates include four core elements:
- Six New Category I CPT Codes: Dedicated coding options for multi-technician harmful behavior care, non-face-to-face QHP services, and direct QHP treatment with analysis.
- Revisions to Existing Codes (97151–97158): Updated code definitions and clinical guidelines for the familiar Category I code family.
- Revised Adaptive Behavior Guidelines: Clearer definitions in the AMA CPT book regarding provider qualifications, service delivery conditions, and time tracking.
- Deletion of Temporary T-Codes: Final retirement of remaining temporary codes as states complete their transition to standardized Category I CPT reporting.
This is not a complete rewrite of ABA billing, but it creates greater precision around the rendering provider who delivered the service, what clinical work occurred, whether it was completed face-to-face, and how much time was required.
Cheat Sheet: The Six New Category I CPT Codes
The six new codes: 97148, 97149, 97159, 97160, 97173, and 97180, expand how clinicians report intensive, high-acuity, and indirect care.
| CPT Code | Service Description | Service Type | Key Clinical & Documentation Requirements |
| 97148 | Supporting assessment of harmful behavior involving 2 technicians | Adaptive Behavior Assessment | 15-min units of technician time (F2F) for a patient exhibiting harmful behavior in a customized environment. |
| +97149 | Add-on code for each additional technician involved in harmful behavior assessment | Assessment Add-On | Billed in conjunction with 97148 to report the 3rd through 5th technicians present. |
| 97159 | Supporting treatment of harmful behavior involving 2 technicians | Adaptive Behavior Treatment | 15-min units of technician time (F2F) in an environment customized to the patient's behavior. |
| +97160 | Add-on code for each additional technician present during treatment | Treatment Add-On | Billed in conjunction with 97159 to report each additional technician present. |
| 97173 | Direct adaptive behavior treatment with analysis by QHP only | Treatment with Analysis (QHP Only) | 15-min units of QHP time face-to-face with a single patient; strictly used for direct care by the QHP without a technician present. |
| 97180 | Non-face-to-face adaptive behavior services by QHP | Non-Face-to-Face QHP Analysis | 15-min units of QHP time; requires session note review, clinical decision-making, goal modifications, or technician target reviews. |
Three Clear Pathways for QHP Clinical Work
One of the most practical shifts in 2027 is how CPT descriptors distinguish Board Certified Behavior Analyst (BCBA) and QHP involvement. Clinical leaders will now select from three distinct coding pathways based on service delivery:
- 97155 (Direct Tech + Clinical Analysis): BCBA + Technician + Patient present face-to-face. Used when directing the technician while analyzing client data. No more guessing about hours or percentages of direction/supervision time versus program modification. CPT 97155 will measure the direct oversight of the technician by the BCBA/QHP.
- 97173 (Direct Patient Treatment + Analysis): BCBA + Patient face-to-face. Strictly used when the QHP delivers direct clinical treatment without a technician present.
- 97180 (Specified Non-Face-to-Face Clinical Analysis): BCBA / QHP only (no patient present). Covers reviewing data and ABA session notes, protocol modifications, assessment protocol development, discharge/transition planning, and reviewing revisions with technicians.
CPT 97180 is particularly meaningful because it recognizes historically non-billable BCBA analytical work or activities that were bundled as part of the billable CPT code . However, remember that introducing a CPT code describes a service, it does not automatically guarantee payer coverage and authorization.
A CPT Code Describes a Service - Funders Determine Payment
While the AMA establishes code definitions, individual commercial funders and state Medicaid programs determine whether to authorize, fund, and reimburse each code.
In its proposed 2027 Medicare Physician Fee Schedule, CMS indicated that carrier pricing will continue for adaptive behavior services. This means reimbursement rates for the six new codes will continue to depend on payer-specific arrangements rather than a single national rate.
For ABA practices, staying informed means partnering with payers early to clarify coverage policies, prior authorization rules, unit limits, credentialing requirements, and documentation standards.
Moving Forward with Confidence
Updating clinical and billing workflows takes collaboration, but your practice has ample time to prepare. By organizing a cross-functional readiness group across clinical, operations, and revenue cycle management teams, you can ensure your workflows, documentation templates, and software systems are fully aligned long before the first claim of 2027 goes out.