How to Document 90833 — The Five Things Your Note Must Show

90833 is the most commonly underbilled code in outpatient psychiatric practice. Most prescribers who provide psychotherapy during medication management visits do not bill it — not because they did not do the work, but because they did not document it in a way that supports the code.

Why 90833 Gets Denied

Psychotherapy add-on codes are time-based services under active OIG audit review. When auditors review psychotherapy claims, they are looking for evidence that therapy was actually performed — not just that you had a supportive conversation.

Vague language like "supportive statements made," "discussed coping strategies," or "patient appears motivated" does not support psychotherapy billing. Those phrases describe a conversation. They do not describe a therapeutic intervention.

The most common reason 90833 gets denied or recouped is not fraud. It is documentation that fails to show what actually happened.

The Five Required Elements

1. Modality

What therapeutic approach you used. CBT, motivational interviewing, DBT-informed strategies, supportive therapy, exposure therapy, psychodynamic therapy. Name it.

2. Intervention

What you actually did within that modality. This is the element most clinicians miss. Modality is the framework. Intervention is the active work. CBT is a modality. Cognitive restructuring to identify and challenge automatic thoughts contributing to panic symptoms is an intervention.

If an auditor cannot identify what changed in the patient because of your intervention, the documentation will not support psychotherapy billing.

3. Focus

The specific psychological target or treatment goal you addressed. Not "anxiety" — "avoidance behaviors maintaining social anxiety" or "cognitive distortions related to work performance."

4. Patient Response

How the patient engaged. What insight they demonstrated. Whether they completed tasks or resisted. What progress looked like.

5. Time

The actual minutes spent in psychotherapy — not the full visit length. A specific number, not a range. "Psychotherapy: 22 minutes."

The Critical Billing Rule

90833 can only be billed when the E/M is selected based on MDM, not time. If you are billing the E/M based on total encounter time, you cannot add 90833. The psychotherapy minutes are counted separately and cannot overlap with E/M time. This rule is explicit in the 2025 CPT manual.

A Defensible Example

PSYCHOTHERAPY (20 minutes): Provided CBT targeting negative thought patterns contributing to low mood. Used cognitive restructuring to challenge all-or-nothing thinking. Patient identified three cognitive distortions and practiced reframing. Demonstrated understanding of thought-feeling connection.

That is a defensible 90833 documentation for a typical outpatient scenario. It names the modality, describes the intervention, identifies the focus, documents patient response, and states the time.

The Time Threshold

90833 covers 16 to 37 minutes of psychotherapy. If your psychotherapy time reaches 38 to 52 minutes, that is 90836. If it reaches 53 or more minutes, that is 90838. The code is selected based on psychotherapy minutes only — not total visit time.

The complete psychotherapy documentation framework — including templates by modality, common documentation failures, and the full five-element structure — is covered in Billing II: Minimum Defensible Documentation inside Think Beyond Education.