97155 Solo Sessions: How to Document Clinical Judgment That Stands Up to Scrutiny

When billing for CPT code 97155, the importance of accurate and defensible documentation cannot be overstated. While many providers are familiar with using 97155 during sessions involving technician direction, a growing number of payers (and auditing entities) are scrutinizing how it is used when no technician is present.

In this article, we explore the compliance-critical features of documenting 97155 sessions delivered one-on-one by a Qualified Healthcare Provider (QHP) and offer guidance on meeting payer expectations while upholding clinical integrity.

What Is CPT 97155?

CPT 97155 is defined as:

"Adaptive behavior treatment with protocol modification, administered by a physician or other qualified health care professional, face-to-face with one patient, each 15 minutes."

This code encompasses:

• Direct implementation of protocols by a qualified healthcare professional (such as a BCBA)

• Testing or modifying treatment protocols to improve outcomes;

• And optionally, active direction of a technician—though that element is not required in every instance.

Beyond the Basics: What Documentation Must Include for Solo 97155 Sessions

Beyond the basic requirements for any ABA treatment note: client identifiers, date, time in/out, setting, provider credentials, and so on, your note must document the unique service that was delivered.  What sets 97155 apart—and what should be explicitly documented, especially when no technician is present—are the components that reflect the behavior analyst’s clinical reasoning, decision-making, and protocol-level interventions. In other words, this isn't about simply logging that you delivered service directly to a client; it's about demonstrating the expertise you employed during direct service delivery billed under 97155.

Here’s What to Include

Clinical Purpose of the Session

• Why did this session require the QHP to work one-on-one with the client?  What were the goals of the session (e.g., testing skill generalization, evaluating barriers, refining prompts)

• What specific treatment barriers, plateauing skills, or behavioral patterns were being assessed?

• Was the intent to test or refine an existing protocol or observe to evaluate the effectiveness of the current protocol?

Program Implementation and Observations

• What skill acquisition or behavior reduction targets were run?

• How did the client respond?

• Were there variations in performance, prompting needs, or engagement that signaled a need for change?
  
  

Protocol Modifications 

• Detail what changes were made and why. Did you modify prompting strategies, reinforcers or reinforcement schedules, instructional materials or instructional strategies?   

• Provide your rationale based on data or direct observation.

• Document all of your decisions, including your decisions to leave protocol as they are.  While it’s essential to document any changes made to a protocol, it’s equally important to capture when no changes were made—and why. The clinical judgment required to maintain a protocol is no less important than the decision to modify one. Omitting this rationale can give the impression that time was spent without meaningful activity, leaving your note vulnerable to audit scrutiny and undermining the value of your professional expertise.

Clinical Interpretation

• Explain why protocol change or maintenance was clinically necessary.  Did you observe generalization, skill regression, or an unexpected learning curve?  Did you evaluate several new strategies and decide the current strategy remains the most appropriate?

• Describe what data and observations supported your decision.  If your observations don’t align with the data, document that and how you’ll address it.  

Plan of Action

• Don’t forget to include your plan for future sessions, including the technician’s future sessions?  Include plans to train the technician on any changes, plans to address discrepancies in the data or to connect with the parents.

• Note any updates made to treatment documents (or reference where they are filed).

• Specify which components are now ready for technician implementation.

• Identify priorities for future 97155 sessions or areas needing additional staff or caregiver training.

Common Pitfalls to Avoid

Even seasoned clinicians can slip into patterns that weaken the defensibility or clarity of a 97155 session note—particularly when no technician is present. Here are key mistakes to watch for.

Generic or Vague Language

Phrases like “worked on goals” or “ran programming” fail to convey the clinical reasoning expected under 97155. Notes must reflect why a QHP was needed for the session—not just what was done.

 Missing Rationale for No Changes

As noted above, deciding not to modify a protocol is a clinical decision—and must be documented as such. Skipping this step suggests passivity, not professionalism.

Replicating Technician Notes

Avoid writing a 97153-style progress note. The note should not look like a technician’s session implemented by a behavior analyst.  97155 demands documentation of the QHP’s observational analysis, data interpretation, and treatment-level decisions.

Overuse of Templates Without Customization

Templates are helpful, but boilerplate notes signal to payers that services may not be individualized. Ensure your documentation reflects what was unique about this session, this client, and your clinical actions.

💡 Compliance Tip

With or without a technician present, if you’re not observing and modifying protocol components, you’re not delivering 97155.

Final Thoughts

As scrutiny around CPT 97155 continues to increase, documentation must clearly demonstrate clinical reasoning, protocol modification, and the value of QHP-delivered services.

If your current documentation process does not consistently support that level of detail, it may be time for a more structured approach.

The ABA Session Notes Frameworks for BCBAs are designed specifically for this level of work. They provide practical tools, guided prompts, and real examples to help you document your observations, decisions, and protocol changes in a way that reflects your expertise and supports compliance.

Take a closer look at the BCBA Frameworks here:
https://www.abacompliance.com/aba-session-notes

CPT 97155 is a powerful tool when used appropriately—but it also carries a heightened responsibility to justify the service. By ensuring your documentation is precise, clinically focused, and aligned with protocol modification requirements, you not only safeguard reimbursement but also strengthen the integrity of the services you provide.

Download our free resource, Say This. Not That: 97155 Edition