09/28/2026
Major ABA CPT Code Changes Are Coming in 2027: What ABA Providers Need to Know
The ABA industry is preparing for one of its most significant coding updates in years.
Beginning January 1, 2027, the Current Procedural Terminology (CPT®) codes used to report Applied Behavior Analysis and adaptive behavior services will undergo substantial changes.
For ABA organizations, BCBAs, billing departments, credentialing teams, practice owners, and revenue-cycle professionals, this is not simply an annual coding update. The changes could affect clinical documentation, authorization requests, treatment-plan workflows, supervision, technician services, claims submission, payer contracts, fee schedules, electronic medical records, and reimbursement procedures.
The American Medical Association has confirmed that the 2027 CPT code set contains 299 new codes, 74 revised codes, and 80 deleted codes across healthcare, with the updated code set becoming effective January 1, 2027.
For the ABA industry specifically, the changes include:
* Six new CPT codes for adaptive behavior services
* Revisions to CPT codes 97151 through 97158
* New and revised coding guidelines
* New distinctions between QHP/BCBA treatment, technician direction, harmful-behavior services, and non-face-to-face clinical work
* Deletion of Category III codes 0362T and 0373T
For ABA providers, preparation should begin well before January.
Why Are ABA CPT Codes Changing?
ABA service delivery has evolved significantly since the current adaptive behavior CPT framework was established.
Today, ABA organizations routinely perform clinical activities that do not always fit neatly into the existing code structure.
BCBAs may spend considerable time:
reviewing treatment data;
analyzing technician session notes;
making clinical decisions;
changing treatment targets;
developing or modifying protocols;
planning transitions or discharge;
training technicians;
conducting complex assessments involving severe or harmful behavior;
or directly implementing treatment while simultaneously conducting behavioral analysis.
The 2027 CPT structure provides more specific ways of describing several of these services.
The goal is greater clarity regarding who performs the service, what clinical activity is being performed, whether technicians are involved, whether the patient is present, and whether the service involves complex or harmful behavior.
That distinction will become increasingly important for documentation and billing.
The Six New ABA CPT Codes for 2027
The six new codes are:
97148
+97149
97159
+97160
97173
97180
Each represents an important expansion of the ABA coding framework.
CPT 97148: Supporting Assessment of Harmful Behavior
CPT 97148 introduces a dedicated code for certain behavior-identification supporting assessments involving harmful behavior.
The service involves technician-delivered assessment activities performed face-to-face with the patient and requires specific circumstances, including the involvement of two technicians and an environment customized to the patient’s behavior.
This is particularly important for cases in which dangerous or severe behavior requires additional clinical resources and personnel.
Historically, organizations sometimes struggled with how to appropriately represent the additional staffing required during these types of assessments.
The new structure provides greater differentiation between routine supporting assessments and assessments requiring additional personnel because of harmful behavior.
CPT +97149: Additional Technician During Harmful-Behavior Assessment
CPT 97149 is an add-on code associated with CPT 97148.
It allows reporting of additional technician resources beyond the two technicians required under the primary service when applicable under CPT guidelines.
Organizations treating patients with severe aggression, self-injurious behavior, property destruction, elopement, or other dangerous behavior should pay particular attention to the documentation standards surrounding these services.
The existence of an additional-staff code does not automatically mean every case involving severe behavior qualifies.
The patient’s clinical circumstances and the actual service delivered must support the code.
CPT 97159: Treatment of Harmful Behavior
The new 97159 code addresses adaptive behavior treatment involving harmful behavior under specified conditions.
Similar to the new assessment structure, the service involves technician-delivered treatment requiring two technicians, face-to-face with the patient, in an environment customized to address the patient’s behavioral needs.
This is a major development for providers treating individuals whose behavior creates substantial safety concerns.
The coding framework now better recognizes that some patients require more intensive staffing and environmental preparation than ordinary technician-delivered treatment.
CPT +97160: Additional Technician for Harmful-Behavior Treatment
CPT 97160 serves as an add-on code for additional technician involvement during eligible harmful-behavior treatment.
For organizations providing intensive behavioral services, this creates an important distinction between:
standard technician treatment;
treatment requiring two technicians;
and qualifying services involving additional technicians.
However, providers should be careful not to interpret the creation of these codes as automatic authorization for additional staffing.
Payer authorization requirements still apply.
A CPT code describes a service. It does not guarantee that an insurance company will authorize or reimburse that service.
CPT 97173: BCBA/QHP Direct Treatment With Analysis
One of the most important changes for many ABA practices is the addition of CPT 97173.
This code distinguishes situations in which the qualified healthcare professional—such as the BCBA when recognized by the payer as the appropriate QHP—personally provides adaptive behavior treatment while conducting analysis.
This creates a clearer separation between direct QHP treatment and technician-direction services.
That distinction becomes particularly important when looking at the revised CPT 97155.
CPT 97155 Is Changing
Under the 2027 framework, CPT 97155 is described around direction of the technician and analysis by the physician or other qualified healthcare professional while face-to-face with the patient.
This makes the distinction between 97155 and 97173 extremely important.
In general terms:
97153
The technician delivers adaptive behavior treatment according to protocol.
97155
The QHP directs the technician and performs analysis while working face-to-face with the patient.
97173
The QHP directly administers treatment with analysis.
This distinction may significantly affect BCBA session documentation.
Providers should review their existing supervision and protocol-modification notes because documentation templates written around the previous 97155 framework may need to change.
A BCBA note should make clear what actually occurred during the session rather than merely stating “protocol modification.”
CPT 97180: Non-Face-to-Face ABA Clinical Services
Perhaps one of the most noteworthy additions is CPT 97180.
The code provides a mechanism for reporting certain adaptive behavior services personally performed by a physician or qualified healthcare professional when the work occurs without face-to-face contact.
Qualifying activities can include clinical work such as:
reviewing and analyzing patient data;
reviewing treatment-session documentation;
making clinical decisions regarding treatment targets or goals;
determining whether protocols require modification;
developing or modifying assessment protocols;
developing transition or discharge plans;
and certain technician-training activities involving treatment or assessment protocols.
This is significant because BCBAs regularly perform substantial clinical work outside the treatment session.
Historically, reimbursement structures have not always clearly recognized that work.
The creation of 97180 acknowledges that meaningful clinical decision-making can occur outside direct patient contact.
However, providers should not assume that every administrative activity performed by a BCBA will qualify.
Scheduling, general chart maintenance, basic administrative work, routine billing functions, and other nonclinical activities should not automatically be treated as billable clinical services.
Documentation will be critical.
Existing ABA Codes 97151–97158 Are Also Being Revised
The changes are not limited to six new codes.
The AMA-approved revisions also affect the existing adaptive behavior code family:
97151 – Behavior identification assessment
97152 – Behavior identification-supporting assessment
97153 – Adaptive behavior treatment by protocol
97154 – Group adaptive behavior treatment by protocol
97155 – QHP direction of technician and analysis
97156 – Family adaptive behavior treatment guidance with analysis
97157 – Multiple-family group adaptive behavior treatment guidance with analysis
97158 – Group adaptive behavior treatment with analysis
The revisions are important because changes in terminology can affect more than claim submission.
They can potentially affect:
clinical notes;
treatment plans;
authorization requests;
payer medical policies;
staff-training materials;
billing software;
EMR configuration;
claims scrubbers;
fee schedules;
contracts;
and audit procedures.
CPT 97156: Parent and Caregiver Training Remains Critical
Family guidance continues to play an important role in the revised code structure.
The 2027 description of 97156 emphasizes family adaptive behavior treatment guidance with analysis, including activities such as discussing treatment protocols and treatment targets and training caregivers to implement assessment or treatment protocols.
This reinforces something ABA organizations should already be emphasizing:
Caregiver training should not simply be documented as:
“Met with parent.”
“Discussed progress.”
“Parent training completed.”
The clinical record should demonstrate the therapeutic purpose of the encounter.
Documentation should explain what treatment target or protocol was reviewed, what skill was taught, how the caregiver responded, what analysis occurred, and what the next clinical step will be when appropriate.
Goodbye to CPT 0362T and 0373T
The existing Category III codes:
0362T
and
0373T
are scheduled for deletion when the new adaptive behavior CPT structure becomes effective.
This is significant for providers handling severe and destructive behavior because the new Category I coding structure is intended to address services that previously relied on temporary Category III codes.
Providers currently billing either T-code should begin identifying:
which patients currently use the code;
which payers authorize the code;
which authorizations extend beyond December 31, 2026;
and how each payer plans to transition those authorizations for dates of service beginning January 1, 2027.
Do not assume an authorization automatically converts to a new CPT code.
January 1, 2027 Is the Critical Date
The new ABA CPT structure takes effect for services beginning January 1, 2027.
That creates an important operational issue for authorizations that span both years.
Consider an authorization covering:
October 1, 2026 through March 31, 2027.
The authorization crosses the CPT transition date.
Providers should determine whether the payer will:
continue honoring the existing authorization;
issue a replacement authorization;
require new CPT codes;
require revised units;
require updated clinical documentation;
or require a completely new authorization request.
Practices should begin asking payers these questions before January rather than discovering the answer through claim denials.
A New CPT Code Does Not Automatically Mean Payer Coverage
This is one of the most important points for ABA organizations.
AMA creates and maintains CPT codes.
That does not mean every payer must immediately reimburse every new code.
Individual insurance companies and Medicaid programs must determine how the codes will be implemented within their own systems and policies.
A payer may need to determine:
whether the code is covered;
which providers may render it;
whether prior authorization is required;
how many units may be authorized;
whether modifiers are required;
whether telehealth is permitted;
the reimbursement methodology;
and whether specific documentation requirements apply.
Therefore, providers should distinguish between:
CPT effective date
and
payer implementation policy.
They are related, but they are not necessarily identical.
Reimbursement Will Require Close Monitoring
In CMS’s proposed 2027 Medicare Physician Fee Schedule, CMS indicated continued carrier pricing for adaptive behavior services, including existing codes and the six new codes.
For ABA organizations, this reinforces the reality that reimbursement can vary considerably across payers and markets.
Providers should not assume that the creation of a new code automatically produces a standardized reimbursement amount.
Commercial insurers, Medicaid programs, managed-care organizations, and other payers may establish different reimbursement methodologies.
Contracts should therefore be reviewed carefully.
Credentialing and Contracting Teams Need to Be Involved
The 2027 transition should not be treated exclusively as a billing-department project.
Credentialing and contracting teams should contact payers to determine whether the new codes will require:
contract amendments;
fee-schedule updates;
provider-type changes;
additional credentialing;
new authorization procedures;
updated provider manuals;
or modifications to existing reimbursement arrangements.
For organizations with dozens of payer contracts, starting this review early could prevent significant revenue disruption.
Your EMR and Billing Software Must Be Updated
ABA organizations should contact their practice-management and billing vendors.
Whether you use systems such as:
CentralReach,
Rethink,
AlohaABA,
Theralytics,
Motivity,
Tebra,
or another platform,
the system must be prepared to recognize the 2027 CPT structure.
Questions to ask your software vendor include:
Will the six new CPT codes be available before January 1?
Will existing treatment templates be updated?
Can authorization units be assigned to the new codes?
Will fee schedules automatically update?
Will claims containing deleted codes be blocked for 2027 dates of service?
Can 2026 and 2027 authorizations coexist correctly?
Will existing documentation templates for 97155 and other revised services be updated?
These questions should be addressed before the first January claims are created.
⸻
Documentation May Be the Biggest Compliance Issue
The most consequential impact of the new CPT structure may ultimately be documentation.
Different services are becoming more clearly distinguished based on:
who performed the service;
what analysis occurred;
whether a technician was present;
whether caregivers participated;
whether the patient was present;
whether the service involved harmful behavior;
and whether the clinical activity occurred face-to-face or non-face-to-face.
Your clinical note must tell the same story as your claim.
If your claim reports QHP analysis but the clinical note shows only routine observation, that discrepancy can create audit risk.
If multiple technicians are billed but documentation does not demonstrate why the service met the applicable requirements, that can also create problems.
Coding and documentation should never exist separately.
What ABA Practices Should Do Now
ABA organizations should establish a formal 2027 CPT Transition Plan.
At minimum, the plan should include the following steps.
1. Identify every payer your organization bills.
Separate commercial insurance, Medicaid, Medicaid MCOs, TRICARE, and other plans.
2. Obtain each payer’s 2027 ABA coding guidance.
Do not assume one insurer’s policy applies to another.
3. Review all authorizations extending into 2027.
Identify every patient whose authorization crosses January 1.
4. Create a CPT crosswalk.
Map the current services your organization provides to the appropriate 2027 service categories.
5. Review payer contracts and fee schedules.
Confirm whether the six new codes require amendments or rate negotiations.
6. Update EMR and billing systems.
Make sure the new codes, modifiers, fee schedules, rendering-provider requirements, and authorization rules can be entered correctly.
7. Rewrite documentation templates.
Especially review templates associated with 97155, caregiver training, QHP treatment, severe-behavior services, and non-face-to-face clinical activities.
8. Train BCBAs and clinical directors.
Clinical staff must understand the differences between the codes—not merely the billing department.
9. Train billing and authorization teams.
Your authorization team must request the correct services, and your billing team must understand the clinical distinctions behind them.
10. Audit the first 2027 claims carefully.
The first several weeks of January should involve aggressive claim monitoring.
Watch for:
rejections;
authorization mismatches;
invalid-code denials;
modifier errors;
provider-type denials;
fee-schedule discrepancies;
and payer-system configuration problems.
Do Not Wait Until January to Prepare
One of the most expensive mistakes an ABA organization can make is treating January 1 as the date to start preparing.
January 1 is the date the new coding structure becomes operational.
Preparation should happen beforehand.
An authorization department submitting requests in December may already be requesting services that will occur in January.
A BCBA completing a six-month treatment plan in November may be creating a plan that extends well into the new coding year.
A payer contract negotiated today may still be in effect when the new codes begin.
The transition has already begun from an operational perspective.
What This Means for ABA Revenue Cycle Management
For billing companies and ABA organizations, these changes reinforce an important principle:
ABA billing is no longer simply about submitting claims.
Modern ABA revenue-cycle management requires coordination among:
clinical teams;
credentialing departments;
contracting teams;
authorization specialists;
billing specialists;
payment-posting teams;
denial-management teams;
and practice leadership.
One change to a CPT code can affect every one of those departments.
Six new codes combined with revisions to the existing code family makes coordination even more important.
Liaison Center’s Recommendation
ABA providers should begin building their 2027 transition strategy now.
Every organization’s preparation should include:
payer verification + authorization review + contract review + system configuration + clinical-documentation review + staff education + January claims monitoring.
The practices that prepare early will be in a far better position to transition smoothly.
The practices that wait for claims to begin denying may find themselves trying to fix authorization, contracting, coding, documentation, and software problems simultaneously.
At Liaison Center, our focus has always been on protecting the entire revenue cycle—not simply getting a claim out the door.
As January 1, 2027 approaches, we will continue monitoring payer implementation policies, authorization requirements, billing guidance, reimbursement updates, and changes affecting ABA organizations.
The codes are changing. Your clinical operation, billing workflows, and revenue-cycle strategy need to be ready to change with them.
About Liaison Center
Liaison Center provides administrative and revenue-cycle support to ABA organizations, including payer credentialing and enrollment, contracting, authorizations, verification of benefits, billing, payment posting, denial management, accounts-receivable follow-up, and revenue-cycle reporting.
For ABA organizations preparing for the 2027 CPT transition, early preparation can mean the difference between a smooth conversion and months of avoidable reimbursement delays.
Sources: American Medical Association (AMA), CPT® 2027 Code Set; ABA Coding Coalition, 2027 Adaptive Behavior Services CPT® Codes and Coding Crosswalk; Centers for Medicare & Medicaid Services (CMS), Proposed 2027 Medicare Physician Fee Schedule.
AMA 2027 CPT announcement
ABA Coding Coalition-2027 ABA codes
ABA Coding Coalition-2027 Coding Crosswalk
https://abacodes.org/about/?utm_source=chatgpt.com
