CPT 90834 is the code for 45 minutes of individual psychotherapy, reported when the session lasts 38 to 52 minutes. It is the right code for the classic 45 to 50-minute therapy session, which is why it is billed more often than any other psychotherapy code.
CPT 90834 description
90834 is psychotherapy, 45 minutes, with the patient (family members may take part). Under CPT time rules it covers 38 to 52 minutes of psychotherapy time. Below 38 minutes the session is a 90832; at 53 minutes or more it is a 90837. See the American Psychiatric Association CPT overview (opens in a new tab) for the full set of psychotherapy codes.
Psychotherapy time bands at a glance
| Code | Time with the patient | Billed when |
|---|---|---|
| 90832 | 16 to 37 minutes | Psychotherapy only |
| 90834 | 38 to 52 minutes | Psychotherapy only |
| 90837 | 53 minutes or more | Psychotherapy only |
| +90833 / +90836 / +90838 | Same time bands (16–37, 38–52, 53+) | Add-ons when psychotherapy is done with an E/M visit on the same day |
When 90834 is the right code
- A standard 45 or 50-minute session: both fall inside 38 to 52 minutes.
- A planned hour that ran short, ending before 53 minutes.
- Telehealth sessions of the same length, billed with the payer’s telehealth place of service and modifiers.
Common 90834 billing mistakes
- Billing by the schedule, not the session: a 50-minute appointment slot that ran 35 minutes is a 90832.
- Missing time: no start and stop times or total time in the note.
- Wrong code with an E/M visit: prescribers who also bill an E/M visit use add-on +90836 instead.
- Credentialing gaps: the clinician is not enrolled with the plan or the behavioral health carve-out that manages the benefit.
Frequently asked questions
Is a 50-minute session 90834 or 90837?
90834. The 90837 code starts at 53 minutes. Our 90837 vs. 90834 guide compares the two.
Can 90834 be billed with 90791 on the same day?
Not by the same provider. The evaluation and psychotherapy are generally billed on separate dates.
Does 90834 need prior authorization?
It depends on the plan. Some require authorization after a set number of visits, so check benefits before treatment continues.
Related mental health billing guides
- CPT 90791: psychiatric diagnostic evaluation
- CPT 90832: 30-minute psychotherapy
- CPT 90837: 60-minute psychotherapy
- 90837 vs. 90834: which code to bill
- CPT 90785: interactive complexity add-on
- Mental health billing services
CPT is a registered trademark of the American Medical Association. Code rules change every year, and payer policies differ. This guide reflects general guidance at the time of writing; your payer contracts and documentation decide what is billable.
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