CPT Code 90833: Psychotherapy Add-On, 30 Min

CPT code 90833 for 30-minute psychotherapy add-on with E&M services. Billing rates, documentation, and reimbursement tips for behavioral health clinics.

Reviewed by Behave Health Billing Team · Last reviewed March 4, 2026

Understanding CPT Code 90833: Psychotherapy Add-On, 30 Minutes

CPT code 90833 is an add-on code representing 30 minutes of psychotherapy (16-37 minutes face-to-face) performed in conjunction with an evaluation and management (E&M) service during the same encounter. This code is one of the most commonly billed codes in psychiatric practice, capturing the clinical reality that psychiatrists and other prescribing providers frequently deliver both medical management and psychotherapy in a single patient visit.

In behavioral health treatment centers, 90833 reflects the integrated care model where a psychiatrist or psychiatric nurse practitioner conducts a medication management visit and also provides brief psychotherapy during the same appointment. Understanding the rules governing this add-on code is essential for accurate billing and avoiding common compliance pitfalls.

Definition and Purpose

CPT 90833 is defined as psychotherapy, 30 minutes with patient, when performed with an evaluation and management service. It is classified as an add-on code, meaning it can only be reported alongside a primary E&M code — it has no standalone value and cannot be billed by itself.

The purpose of 90833 is to recognize and reimburse the psychotherapeutic work that prescribing providers deliver as part of combined medication management and therapy visits. Without this code, the therapy component of these integrated encounters would go uncompensated, creating a financial disincentive for psychiatrists and other prescribers to provide psychotherapy alongside medication management.

This code is particularly important in behavioral health because evidence consistently demonstrates that combined pharmacotherapy and psychotherapy produces better outcomes for many conditions — including depression, anxiety, PTSD, and substance use disorders — than either treatment alone. By making it financially viable to deliver both services in a single encounter, 90833 supports integrated treatment approaches.

When to Use 90833 in Behavioral Health

Use CPT 90833 when a prescribing provider delivers both an E&M service and 16-37 minutes of psychotherapy during the same encounter. Common scenarios include:

Psychiatric medication management visits where the psychiatrist also provides brief psychotherapy addressing coping strategies, thought patterns, or behavioral interventions
Nurse practitioner follow-up visits that combine medication adjustment with motivational interviewing or supportive therapy for substance use recovery
Integrated treatment encounters in residential or PHP programs where the prescriber addresses both medication needs and therapeutic goals during a single appointment
MAT follow-up visits where the prescriber reviews medication response and provides brief counseling related to recovery and relapse prevention
Crisis stabilization encounters where the prescriber addresses both the medical aspects of the crisis (medication adjustments, safety planning) and provides therapeutic support

Do not use 90833 when psychotherapy is the only service provided — use the standalone code CPT 90832 instead. Do not use 90833 without a paired E&M code on the same claim. Also avoid using 90833 when the therapy portion lasts less than 16 minutes, as this does not meet the minimum time threshold for any psychotherapy code.

Documentation Requirements

Because 90833 involves two distinct services in a single encounter, documentation requirements are more detailed than for standalone psychotherapy codes. The medical record must clearly support both the E&M service and the psychotherapy component:

For the E&M component (billed separately under 99202-99215):

History elements appropriate to the E&M level selected
Examination findings relevant to the medical evaluation
Medical decision-making documentation, including medication review, adjustments, side effect assessment, and lab interpretation
Time spent on the E&M service (if using time-based E&M billing)

For the psychotherapy component (billed under 90833):

Start and stop times for the psychotherapy portion, clearly separate from E&M time
Therapeutic modality used during the psychotherapy component
Session content — Specific clinical issues addressed through psychotherapy (distinct from medication management discussion)
Patient response to therapeutic interventions
Connection to treatment goals in the individualized treatment plan
Plan for ongoing therapy — Topics or skills to continue working on

The critical documentation requirement is the clear separation of E&M time from psychotherapy time. Auditors look for distinct time blocks that do not overlap and clinical content that demonstrates two separate services were provided, not one service documented twice under different codes.

Billing and Reimbursement

As of March 2026, the approximate Medicare national average reimbursement for CPT 90833 is approximately $57. Because 90833 is an add-on code, the total reimbursement for the encounter includes both the E&M payment and the 90833 payment. Key billing considerations include:

Always paired with E&M — Submit 90833 on the same claim as an E&M code (99202-99215). The claim will be denied if 90833 appears without a qualifying E&M code
No modifier 25 on E&M — Unlike billing standalone psychotherapy codes with E&M, when using the add-on psychotherapy codes (90833, 90836), modifier 25 is not required on the E&M code because the add-on code is specifically designed to be billed with E&M
Combined reimbursement — The total payment for the encounter equals the E&M rate plus the 90833 rate. For example, a 99214 plus 90833 yields approximately $155-$175 combined (Medicare rates as of March 2026), depending on geographic locality
Facility versus non-facility — Both the E&M and 90833 rates are affected by the place of service. Facility-based encounters receive lower provider rates
Time-based E&M selection — If using time as the basis for E&M level, only count time spent on E&M activities, not psychotherapy time. The psychotherapy time belongs exclusively to the 90833 code

Medicaid rates for 90833 vary by state. Commercial payer rates follow the contracted fee schedule and are typically calculated as a percentage of Medicare or based on negotiated terms.

Common Modifiers

Modifiers used with CPT 90833 are limited because it is an add-on code, but several may apply:

Modifier 95 — Synchronous telemedicine service. When both the E&M and psychotherapy are delivered via telehealth, apply modifier 95 to both the E&M code and 90833
Modifier 52 — Reduced services. Rarely used with 90833, but may apply if the psychotherapy component was started but not completed as planned

Note that modifier 59 should not be used with 90833 relative to the paired E&M code. The add-on code structure already establishes the relationship between the two services, so a modifier to indicate a separate service is neither necessary nor appropriate.

The E&M code paired with 90833 may require its own modifiers depending on the clinical scenario (e.g., modifier 95 for telehealth, appropriate place-of-service codes).

Compliance Considerations

The add-on psychotherapy codes carry some of the highest compliance risks in behavioral health billing. Several key areas require careful attention:

The psychotherapy must be genuinely separate from the E&M service. Discussing medication side effects, reviewing lab results, or counseling about medication adherence is part of the E&M service, not psychotherapy. To justify 90833, the provider must deliver actual psychotherapeutic intervention — applying a therapeutic modality to address psychological or behavioral issues. Simply talking with a patient about their feelings during a medication check does not automatically constitute psychotherapy.

Time separation is audited rigorously. Overlapping time between the E&M service and psychotherapy is a red flag. If a provider documents a 25-minute E&M visit and 20 minutes of psychotherapy but the total appointment lasted only 30 minutes, auditors will identify the discrepancy. The total time documented across both codes should not exceed the actual duration of the encounter.

Pattern analysis triggers audits. Consistently billing 90833 with every E&M encounter raises payer scrutiny. While some providers legitimately provide psychotherapy at every visit, auditors expect to see clinical variation. Documentation must support the medical necessity of psychotherapy at each individual encounter.

Correct code selection matters. If the psychotherapy time extends to 38 minutes or more, bill 90836 instead of 90833. Conversely, if therapy time is less than 16 minutes, no psychotherapy add-on code should be billed — the brief therapeutic conversation is considered part of the E&M service.

Non-prescriber billing of 90833 is uncommon. Some billing staff mistakenly assign 90833 when a therapist and prescriber see the same patient on the same day. In this scenario, the therapist should bill 90832 (or 90834 / 90837) as a standalone psychotherapy code, and the prescriber should bill the E&M code independently. Add-on code 90833 is only appropriate when the same provider delivers both services in the same encounter.

Frequently Asked Questions

Can CPT 90833 be billed as a standalone code?

No, CPT 90833 is an add-on code and cannot be billed alone. It must always be reported with a primary E&M code (99202-99215) on the same date of service. If psychotherapy is the only service provided during the encounter, use the standalone code CPT 90832 for 30-minute sessions instead.

Which E&M codes can be paired with CPT 90833?

CPT 90833 can be paired with office and outpatient E&M codes 99202-99215. It is billed when a prescribing provider performs both a medical evaluation (E&M) and psychotherapy during the same encounter. The E&M code captures the medical portion, and 90833 captures the psychotherapy portion.

How do I document time for 90833 versus the E&M code?

Time spent on psychotherapy (16-37 minutes of face-to-face therapy) is reported under 90833, while time spent on the E&M service (history, exam, medical decision-making, medication management) is reported under the E&M code. The two time periods must not overlap. Document separate start and stop times for each component to clearly distinguish the psychotherapy time from the medical evaluation time.

Who can bill CPT 90833?

CPT 90833 is typically billed by prescribing providers — psychiatrists, nurse practitioners, and physician assistants — who perform both E&M services and psychotherapy in the same encounter. Non-prescribing therapists generally do not bill 90833 because they do not perform E&M services. However, some payers may allow it in specific clinical arrangements where both services are provided by the same non-physician provider.