CPT Code 97153: Adaptive Behavior Treatment by Protocol
Reviewed against AMA CPT and CMS guidance. See sources.
What is CPT 97153?
CPT 97153 is adaptive behavior treatment by protocol: direct, one-to-one ABA delivered by a technician such as an RBT, under the direction of a BCBA or other qualified professional. It is billed in 15-minute units of face-to-face time with one client and is usually the highest-volume code in an ABA program.
Direct ABA treatment by a technician following a protocol designed by a qualified professional. The technician runs skill acquisition and behavior reduction programs and collects data during the session.
Time Requirements
Per 15 minutes of face-to-face time with one client. Weekly hours come from the treatment plan and authorization. Payers may set their own unit rules.
Modifiers
| Code | Description |
|---|---|
| 96 | Habilitative services (some payers require it on ABA claims). |
| HM to HP | Clinician education level modifiers some Medicaid programs require: HM (less than bachelor's), HN (bachelor's), HO (master's), HP (doctoral). |
Billing a session by video or phone? See telehealth modifiers 95, 93, GT and POS 02 vs 10.
When to Use
- Direct one-to-one ABA sessions delivered by a technician
- Implementing behavior intervention plans
- Running skill acquisition programs (for example discrete trial or naturalistic teaching)
- Collecting session data during direct treatment
When Not to Use
- Two or more clients at once: use 97154
- Treatment where the BCBA modifies the protocol: use 97155
- Assessment services: use 97151 or 97152
- When there is no protocol designed by a qualified professional
What to Document for CPT 97153
- Programs run and targets addressed
- Client responses and data collected
- Challenging behaviors and how the protocol was followed
- Session start and end times
- Who delivered the session and who directed it
Common Denial Reasons
- No active treatment plan on file
- Units billed exceed authorized hours
- Technician credentials not on file with the payer
- Overlapping services billed without documentation
- Session data not available for audit
Payer Notes
Prior authorization is virtually always required. Authorized hours vary widely by payer and clinical need. Many payers require updated treatment plans about every six months and expect caregiver involvement to be documented.
ICD-10 diagnosis codes
Every claim pairs the CPT code with the diagnosis the clinician documented. See the mental health ICD-10 code reference or a condition guide:
Related Codes
Frequently Asked Questions
Can a BCBA bill 97153?
In many cases yes, when the BCBA personally delivers treatment by protocol, though some payers limit this. It is more common for BCBAs to bill 97155 and technicians to bill 97153.
How do I document 97153?
Record the programs run, client responses, data collected, any challenging behaviors and how the protocol was followed, and session start and end times. The data should line up with treatment plan goals.
Can 97153 and 97155 be billed for the same time?
Yes, when a BCBA directs the technician during the session, CPT allows 97155 for the same time as the technician's 97153. Some payers limit concurrent billing, so check the policy.
How are 15-minute units counted?
Under the CPT time rule, a unit is generally met once 8 minutes have passed. Many ABA payers publish their own unit rules, so follow each payer policy.
Sources: American Medical Association (AMA), CPT Professional codebook: code descriptors, psychotherapy time rules, and add-on code guidance. Centers for Medicare & Medicaid Services (CMS): Medicare Physician Fee Schedule and National Correct Coding Initiative (NCCI) policy. Behavior Analyst Certification Board (BACB): RBT supervision requirements. CPT revises the adaptive behavior codes (97151 to 97158) and adds new codes effective January 1, 2027. This page reflects the codes in effect through 2026.
- AMA: CPT overview
- CMS: National Correct Coding Initiative (NCCI) edits
- CMS Medicare Coverage Database: Billing and Coding, Psychiatry and Psychology Services (A57480)
- CMS: Physician Fee Schedule relative value files
- CMS MLN901705: Telehealth and Remote Monitoring (PDF)
Payer rules vary. Confirm coverage, time, modifier, and documentation rules with each payer before billing. This page is general education, not billing or legal advice.
Write documentation for CPT 97153 sessions faster
Spend less time on documentation and more time with clients. You review every note before it is used for billing.
Stop spending evenings on documentation
WellNotes generates complete clinical notes in 2 minutes. Starting at $27/month.
Cancel anytime · Secure & private