CPT 90832 vs 90834: Choosing the Right Session Code
Quick answer
The difference between 90832 and 90834 is time. Under CPT time rules, 90832 covers 16 to 37 minutes of face-to-face psychotherapy and 90834 covers 38 to 52 minutes. Sessions under 16 minutes are not reported as psychotherapy, and 53 minutes or more is 90837. Bill the code that matches the minutes you actually spent.
Psychotherapy time thresholds
| Psychotherapy time | Code | With a same-day E/M |
|---|---|---|
| Under 16 minutes | Not reported as psychotherapy | Not reported |
| 16 to 37 minutes | 90832 | 90833 |
| 38 to 52 minutes | 90834 | 90836 |
| 53 minutes or more | 90837 | 90838 |
Time is face-to-face psychotherapy with the client. Family members may take part if the client is present for all or part of the session. Documentation, scheduling, and billing time do not count.
CPT 90832 vs 90834 side by side
| Attribute | CPT 90832 | CPT 90834 |
|---|---|---|
| CPT descriptor | Psychotherapy, 30 minutes with patient | Psychotherapy, 45 minutes with patient |
| Time range (CPT time rules) | 16 to 37 minutes | 38 to 52 minutes |
| Add-on version with a same-day E/M | 90833 | 90836 |
| Typical use | Brief check-ins, focused interventions, sessions that end early | A standard weekly session |
| Documentation focus | Minutes, intervention, response, progress | Minutes, intervention, response, progress |
Documentation tips
- Record start and stop times (or total psychotherapy minutes). The difference between 37 and 38 minutes changes the code.
- If a session ends early, document why (for example client distress or an emergency) and bill the code the actual time supports.
- Count only psychotherapy time with the client, not documentation or scheduling time.
- Describe a psychotherapeutic intervention even in short sessions. Supportive conversation alone does not support a psychotherapy code.
- Never extend a session only to reach 38 minutes.
Payer notes
- Payer rules vary. Many payers expect start and stop times for time-based psychotherapy codes.
- Prescribers who provide an E/M service the same day use 90833 or 90836 instead.
Full code guides
Frequently Asked Questions
Is a 30-minute session 90832 or 90834?
90832. It covers 16 to 37 minutes of psychotherapy. 90834 starts at 38 minutes.
Which code do I use for a 38-minute session?
90834. Its range is 38 to 52 minutes. Document start and stop times so the time is clear.
What if the session lasted 15 minutes?
Psychotherapy under 16 minutes is not reported with 90832 or any other psychotherapy code. Document the contact in the record, but do not bill it as psychotherapy.
Should I schedule longer sessions to bill 90834?
Session length should follow clinical need, not the code. If a client needs more time, schedule longer sessions and document why. Never extend a session only to reach a higher code.
Do 90832 and 90834 have add-on versions?
Yes. When a clinician who bills E/M also provides psychotherapy the same day, 90833 (16 to 37 minutes) and 90836 (38 to 52 minutes) are used with the E/M code.
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.
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.