CPT 90833: Psychotherapy Add-On With an E/M Visit

Mukesh MakwanaFounder & CEO · Hands-on medical billing & RCM across 11 specialties · Reviewed October 1, 2026

CPT 90833 is how a prescriber gets paid for therapy delivered inside a medication management visit. It is an add-on, so it never stands alone, and it is the shortest of the three add-ons. Most of what goes wrong with it is not about the therapy minutes. It is about how the E/M underneath it was chosen.

What CPT 90833 is

90833 is psychotherapy, 30 minutes with patient when performed with an evaluation and management service, listed separately in addition to the code for the primary procedure. In plain terms: one clinician, one encounter, two distinct pieces of work. The E/M covers the medical side, such as assessment, medication decisions and monitoring. The add-on covers psychotherapy delivered in the same visit.

Because it describes therapy layered onto an E/M, only clinicians who can bill E/M services can use it. That means physicians, psychiatric nurse practitioners and physician assistants. A psychologist or a clinical social worker cannot report 90833, because they cannot report the E/M it attaches to; their standalone codes are 90832, 90834 and 90837.

CPT 90833 time: minimum and range

The three add-ons split psychotherapy time the same way the standalone codes do. 90833 covers 16 to 37 minutes of psychotherapy, 90836 covers 38 to 52, and 90838 covers 53 minutes or more. The minimum time for 90833 is therefore 16 minutes; below that, no psychotherapy add-on can be reported and the visit is the E/M alone.

The minutes that count are psychotherapy minutes only. Time spent on the medical work of the visit, reviewing side effects, adjusting doses or ordering labs, belongs to the E/M and cannot be counted twice. The note has to make the split visible.

Choosing the E/M level: medical decision making only

This is the rule most practices get wrong after the 2021 office visit changes. Office E/M levels can normally be chosen either by medical decision making or by total time. When a psychotherapy add-on is on the claim, the American Psychiatric Association's guidance is that the E/M level must be determined by the level of medical decision making. Time is not an available route.

The logic is straightforward. Total time on the date would include the psychotherapy minutes, and those minutes are already being paid through the add-on. Selecting the E/M by time would bill the same minutes twice. Two practical consequences follow:

• The E/M note has to support its level on problems, data and risk. A visit documented only with a total time statement has no basis for its level once 90833 is added.
• Prolonged services are off the table. The prolonged service codes attach only to an E/M selected on time, so they cannot be stacked onto an E/M chosen by decision making.

CPT also expects the two services to be significant and separately identifiable. A few minutes of supportive conversation during a medication check is part of the E/M, not psychotherapy.

CPT 90833 vs 90834

These two get confused because a 30-minute add-on and a 45-minute standalone code can describe similar amounts of therapy. They are not alternatives for the same visit. 90834 is psychotherapy alone, 38 to 52 minutes, with no E/M. 90833 is 16 to 37 minutes of psychotherapy on top of an E/M service. Medicare's edits treat them as mutually exclusive on the same date at indicator 0.

The deciding question is whether a separately identifiable E/M happened. If it did, the therapy goes on the claim as an add-on whose code depends on the therapy minutes: 90833, 90836 or 90838. If it did not, the session is a standalone psychotherapy code, and a prescriber who only provided therapy that day bills it exactly as a therapist would.

Documentation requirements

• The E/M, documented on its own terms: the problems addressed, data reviewed and the risk of the management decisions, sufficient to support the level billed.
• Psychotherapy minutes, stated separately from the E/M work, falling inside 16 to 37.
• The psychotherapy itself: the technique used, what was worked on, and how the patient responded.
• Why therapy was needed at this visit, tied to a diagnosis and to treatment goals rather than recorded as routine.
• Medication decisions, including continuing a regimen unchanged, since that is part of the decision making that supports the E/M.
• Telehealth facts where the visit was remote: the technology used and where the patient was.

Common denials and the exact fix

Modifier rules

• 25: CPT does not require modifier 25 on the E/M when the only other service is a psychotherapy add-on, because the add-on structure already says the two belong together. A minority of commercial payers ask for it anyway, so treat it as a per-payer setting.
• 95 and 93: telehealth by audio and video, or by audio only. Both lines of the visit, the E/M and the add-on, should describe the same technology.
• 59 and the X modifiers: rarely relevant to 90833. They cannot release any of its indicator 0 pairs.

Interactive complexity, 90785, may be reported with 90833 where a qualifying factor is documented; the Medicare edit file has no pair between the two.

NCCI bundling edits for 90833

Medicare practitioner procedure-to-procedure edits, file effective October 1, 2026. Indicator 0 is absolute; indicator 1 can be released by a modifier for genuinely separate services.

• 90833 with 90832: indicator 0, mutually exclusive, with 90833 in column one.
• 90834, 90836, 90837 and 90838 over 90833: indicator 0. Only one psychotherapy code, standalone or add-on, per encounter.
• 90791 and 90792 over 90833: indicator 0. A diagnostic evaluation day is not a psychotherapy add-on day.
• 90833 with the emergency department codes 99281 to 99285, critical care 99291 and 99292, and the preventive medicine codes 99381 to 99397: indicator 0.
• 90833 over crisis psychotherapy 90839 and 90840: indicator 0.
• 90833 over 96127: indicator 0.
• Family and group psychotherapy over 90833 (90846, 90847, 90849, 90853): indicator 1, with a separate time interval documented.
• 90833 over 96116, the TMS codes 90867 to 90869, and G0444: indicator 1.

Local coverage: is there an LCD for this code?

There is no national coverage determination for psychotherapy or psychiatric evaluation, so coverage is set locally and it differs by jurisdiction. Several Medicare Administrative Contractors publish a local coverage determination for psychiatric services together with a billing and coding article that carries the actual code list. Novitas Solutions, for example, maintains LCD L35101 (Psychiatric Codes, effective January 1, 2024) with billing and coding article A57130, which is where the covered CPT and HCPCS codes and the covered diagnoses actually live.

Two practical consequences. First, the diagnosis list that supports CPT 90833 in one jurisdiction may not support it in another, so the article to read is the one from the contractor that processes your claims. Second, LCDs and their articles are revised without much notice, which is why a claim that paid last quarter can deny this quarter with nothing changed on your side. Search the CMS Medicare Coverage Database by code and by your contractor, and re-check it when a denial pattern appears.

CPT 90833 reimbursement

As an add-on, 90833 is paid in addition to the E/M, not instead of part of it, so what the visit earns is the sum of two lines. That is the reason a correctly leveled E/M matters as much as the therapy minutes. Medicare publishes relative values for the add-on rather than a price; your locality's geographic adjustment and the conversion factor below turn them into a payment, and commercial contracts set their own figures.

2026 Medicare RVUs for CPT 90833

Source: CMS CY 2026 PFS Relative Value File, RVU26D (October release, published 08/26/2026). RVUs are national and unadjusted; commercial and Medicaid payers set their own rates and their own coverage.

In the 2026 CMS relative value file, CPT 90833 carries 1.71 work RVUs, with 2.44 total RVUs in a non-facility setting and 1.97 in a facility. The gap is practice expense: in an office the practice carries it, in a facility the facility does. Its PC/TC indicator is 0: CMS treats it as a physician service, so modifiers 26 and TC do not apply to it in any setting. Its global indicator is ZZZ: it is an add-on code, always reported alongside its primary service and never on its own. Across the psychotherapy add-on codes billed with E/M, work RVUs run from 1.71 (90833) to 2.86 (90838), so 90833 carries the lowest physician work in its group.

Units per day. Medicare's medically unlikely edit allows up to 2 units of CPT 90833 per patient per day (a date of service edit set on clinical grounds, rationale: clinical: CMS workgroup). MUE values are published quarterly in the Medicare NCCI practitioner services MUE table; the value above is from the table effective October 1, 2026.

To turn RVUs into payment, each component is multiplied by your locality's geographic practice cost index, the three are added, and the sum is multiplied by the 2026 conversion factor: $33.4009, or $33.5675 for qualifying APM participants (CMS-1832-F; CMS fact sheet). The CMS Physician Fee Schedule Look-Up Tool runs that calculation for your own locality.

Frequently asked questions

Sources

American Medical Association, CPT 2026 Professional Edition.
Centers for Medicare & Medicaid Services, CY 2026 PFS Relative Value File RVU26D (October release, published 08/26/2026): RVUs, PFS status indicator, PC/TC indicator and global indicator for 90833.
Centers for Medicare & Medicaid Services, CY 2026 Physician Fee Schedule final rule, CMS-1832-F: conversion factors.
Centers for Medicare & Medicaid Services, Medicare NCCI Practitioner Services medically unlikely edit table, effective October 1, 2026.
Centers for Medicare & Medicaid Services, Medicare NCCI procedure-to-procedure edits for practitioner services, 2026 Q4 file effective October 1, 2026.
Centers for Medicare & Medicaid Services, Medicare Coverage Database: Novitas Solutions local coverage determination L35101 (Psychiatric Codes, effective 01/01/2024) and billing and coding article A57130.
Centers for Medicare & Medicaid Services, National Correct Coding Initiative Policy Manual for Medicare Services, revision date 1/1/2026, Chapter XI (Medicine), Section C, Psychiatric Services.
American Psychiatric Association, Update on 2021 Office/Outpatient E/M Billing and Documentation: selecting the E/M level on medical decision making when a psychotherapy add-on code is reported.
Centers for Medicare & Medicaid Services, List of Telehealth Services for Calendar Year 2026 (CY 2026 PFS final list): codes maintained on and added to the Medicare telehealth list.

CPT® is a registered trademark of the American Medical Association. Payer policy, NCCI edits and MUE values change quarterly, so check your own contractor and your commercial contracts before submission. How we verify this guidance.

Related codes

• CPT 90834. Standalone 45-minute psychotherapy, mutually exclusive with 90833 on the same date.
• CPT 90792. The prescriber's diagnostic evaluation, which comes before add-on visits and cannot share their date.
• CPT 90837. 60-minute standalone psychotherapy for a session with no E/M.

Related reading

• Behavioral health & psychiatric billing. How we scrub session-based claims, track prior authorization and bill collaborative care.
• Psychotherapy add-on coding. How the add-on psychotherapy codes pair with an E/M visit and where the time rules bite.
• Behavioral health telehealth billing guide. Place of service 02 and 10, modifiers 95, 93 and FQ, audio-only and the 2028 in-person rule.
• Behavioral health prior authorization in 2026. Why authorizations lapse mid-episode and what catching them early is worth.
• Free credentialing for new billing clients. Credentialing with 3 insurance payers at no cost when you start billing with us.