CPT code 90834: Individual psychotherapy billing guide (45 min)

Key takeaways

CPT code 90834 covers individual psychotherapy of 38 to 52 minutes, billed as a 45-minute session.

The Medicare national non-facility rate is about $104.16 for 2025 and about $113.90 for 2026, before GPCI locality adjustment.

Upcoding to CPT 90837 below 53 minutes is the most common billing error, so document exact start and stop times.

Practice management software like Pabau ties CPT code submission, session notes, and electronic claims into one workflow.

CPT code 90834 is the billing code for individual psychotherapy, 45 minutes. It covers any session where the psychotherapy itself runs 38 to 52 minutes.

It is the most commonly billed psychotherapy code in outpatient behavioral health. That 15-minute window is what makes it awkward. Two minutes either side of it moves the claim onto a different code at a different rate.

This guide covers the descriptor, the time rules, and 2025 and 2026 Medicare rates. It also covers code comparisons, add-on codes, telehealth billing, and the documentation payers ask to see.

CPT codes are maintained by the American Medical Association (AMA), which updates the full code set every year. Every rate below comes from the CMS Physician Fee Schedule. Treat the figures as national averages, not as what your own payer will pay.

What CPT code 90834 covers

CPT code 90834 describes individual psychotherapy lasting approximately 45 minutes. The AMA’s official descriptor reads: Psychotherapy, 45 minutes with patient.

It applies to interactive, face-to-face psychotherapy with one patient, including the telehealth equivalent. The work being billed is evaluating and treating a mental health condition through verbal therapeutic technique.

The code is for licensed mental health professionals billing standalone psychotherapy. It carries no evaluation and management (E&M) component. When a psychiatric E&M service happens in the same session, an add-on code applies instead.

Time requirements: The 38 to 52 minute rule

Time is the most audited element of a 90834 claim. The AMA specifies 90834 when the psychotherapy portion of the session lasts 38 to 52 minutes. Below 38 minutes the claim belongs to CPT 90832. At 53 minutes or more it belongs to CPT 90837.

• Below 38 minutes: Bill CPT 90832 (30-minute individual psychotherapy)
• 38-52 minutes: Bill CPT 90834 (45-minute individual psychotherapy)
• 53 minutes or more: Bill CPT 90837 (60-minute individual psychotherapy)

Those boundaries carry more money than a session note usually suggests. Mapped against the 2026 fee schedule, the 90834 band is the narrowest of the three and sits directly below the biggest jump in rate.

Session notes have to record the clock start and stop time of the psychotherapy contact, not a duration estimate. Payers request records for time-based codes as a matter of routine. A note reading only “45 minutes” with no timestamps is the easiest claim on your list for a reviewer to pull.

Who can bill 90834?

Any licensed mental health professional credentialed to provide individual psychotherapy can bill 90834. The provider types below are the usual ones. Payer contracts and state licensure laws still govern who qualifies, so confirm your credentials with each payer before you bill.

• Psychiatrists (MD, DO)
• Psychologists (PhD, PsyD)
• Licensed clinical social workers (LCSW)
• Licensed professional counselors (LPC)
• Licensed marriage and family therapists (LMFT)
• Advanced practice registered nurses with a psychiatric specialty (APRN/PMHNP)
• Physician assistants with psychiatry credentialing, where state law and payer contracts permit

Residents and trainees billing under a supervising provider’s NPI follow the incident-to or supervision rules written into their payer agreements. Medicare sets its own conditions for behavioral health providers billing under Part B, and those are published in CMS guidance for outpatient mental health services.

Medicare and commercial reimbursement rates

Medicare’s national non-facility rate for CPT code 90834 is about $104.16 for 2025 and about $113.90 for 2026. Rates are adjusted by the CMS Geographic Practice Cost Index (GPCI).

A therapist in San Francisco is paid differently from one in rural Mississippi for the same code. Check your own figure with the CMS Physician Fee Schedule lookup tool for your locality and fee schedule year.

Tracking reimbursement per CPT code is how a practice catches an underpayment before it compounds across a year of sessions.

For out-of-network patients, a superbill carrying 90834 and the matching diagnosis code lets the patient claim from their insurer directly. Verify any figure against the current fee schedule before you build a budget on it.

90834 vs 90837: Choosing the right code

Upcoding 90834 to 90837 is the most frequently cited billing error in individual psychotherapy. The rule itself is simple. A session of 38 to 52 minutes is 90834, and 53 minutes or more is 90837. The failure comes from skipping the stop time and defaulting to the code that pays more.

90834 vs 90832: 45-minute vs 30-minute sessions

CPT 90832 covers sessions of 16 to 37 minutes. It suits brief check-ins, medication management follow-ups with a short therapy component, and cases where clinical necessity supports a shorter contact.

Many practices use 90832 for follow-ups and keep 90834 for primary treatment contacts. Under the 2026 fee schedule the difference between the two is about $38 a session, which is what makes the timestamp worth writing down.

The psychotherapy code family at a glance

Those are the 2026 CMS national non-facility figures, and each one shifts with your GPCI locality. The 2025 equivalents were roughly $75 to $80 for 90832, $104.16 for 90834, and $154.29 for 90837.

The psychotherapy family is one small corner of a much larger set. Our library of CPT codes covers the other procedure codes a behavioral health practice bills through the year.

Add-on codes you can pair with 90834

Some sessions include both a psychiatric E&M service and psychotherapy. In that case the psychotherapy is billed with an add-on code rather than standalone 90834. Add-on codes cannot be billed on their own. Each one has to accompany a primary E&M code.

A psychiatrist running a medication management visit alongside 45 minutes of psychotherapy bills the E&M code plus add-on 90836. Billing 90834 next to an E&M code without that add-on structure usually comes back denied. AAPC’s CPT code reference and the AMA add-on code guidelines both confirm the correct pairing.

Telehealth billing for 90834

CPT code 90834 sits on the Medicare list of telehealth services. The mental health telehealth flexibility that started with the COVID-19 public health emergency has been extended by later legislation. Those provisions still depend on renewal, so check current CMS policy before you bill a remote session.

• Place of service code: POS 02 for telehealth delivered somewhere other than the patient’s home, POS 10 for a patient at home
• Modifier 95: Required by most commercial payers for synchronous telehealth; confirm it with each payer
• Audio-only: Medicare has allowed audio-only psychotherapy under certain conditions, and this policy keeps moving
• Platform requirements: The session needs a real-time, interactive audiovisual platform. Pre-recorded content does not qualify
• State licensure: Providers normally need a license in the state where the patient is physically located during the session

Practices running teletherapy alongside in-person sessions should audit their note templates. The place of service, the modifier, and the session start and stop time have to be captured in both modes.

Documentation that survives a payer audit

A 90834 note needs seven elements, and the start and stop time is the one a reviewer checks first. CMS requires outpatient mental health services to meet medical necessity criteria and to be supported by adequate documentation.

A structured intake note, carried through in the same format at every progress note, is what builds that record over a course of treatment.

• Session start and stop time (not a duration): document the clock times, for example “Session: 2:05 PM to 2:51 PM”
• Type of service: state that the service was individual psychotherapy
• Clinical content: the intervention used, the patient’s response, and progress toward treatment goals
• Medical necessity: link the service to an active DSM-5 diagnosis and say why psychotherapy is still clinically indicated
• Mental status observations: a brief note on presentation, affect, and functioning
• Treatment plan alignment: a reference to the plan goals the session addressed
• Provider signature and credentials: the treating clinician’s full signature with licensure designation

What matters is that every required element appears in every note, every time. Practices that formalize this find audits faster and denial rates lower. Behavioral health has less room for error than most specialties on medical billing compliance, because so much of its revenue rides on time-based codes.

Common billing mistakes with 90834

Denials for 90834 cluster around a short list of repeating errors. Each one is cheaper to prevent at the point of documentation than to appeal after the fact.

• Upcoding to 90837: billing the 60-minute code for a session that reached 45 to 51 minutes. This is a denial risk and an OIG fraud indicator
• Missing start and stop times: writing “45-minute session” with no clock times. Time-based codes need timestamps, not estimates
• Billing standalone 90834 with an E&M: when a psychiatrist provides medication management and psychotherapy, the pairing is E&M plus add-on 90836
• Wrong POS code for telehealth: using the office code (POS 11) for a remote session instead of POS 02 or POS 10
• Missing modifier 95: leaving off the telehealth modifier where a commercial payer requires it
• Diagnosis code mismatch: pairing 90834 with a diagnosis the payer does not accept for psychotherapy
• Billing non-face-to-face time: only psychotherapy contact time counts, not note-writing, phone follow-up, or case coordination

How claims management software keeps 90834 claims clean

Most behavioral health practices keep the session note in one system and the claim in another. The code itself often lives in a spreadsheet, or in a biller’s head. Every hand-off is another chance for the timestamp to go missing. The 38 to 52 minute window is narrow enough that three extra minutes change the billable code.

Practice management software like Pabau puts the three in one place. Session note templates can prompt for the start time, the stop time, and the diagnosis code while the clinician is still writing.

The code then travels with the note, so the claim is built from what was documented rather than from what someone remembers.

Claims go out electronically through an integrated clearinghouse, and claim status comes back on the same screen. Pabau’s claims management software also reports denial rates by payer and by code.

That tells you which insurer is creating friction on your 90834 claims. You can then fix the note template instead of appealing one claim at a time.

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Conclusion

The 90834 window is narrow and the code above it pays about $53 more. That combination is why payers audit this code so hard. A practice that writes a clock time on every note has already won the argument before a reviewer starts it.

So the change worth making is a small one. Make the timestamp automatic, and the coding decision stops being a judgment call at the end of a long day.

There is a trade-off to remember. Honest time documentation will occasionally push a session down to 90832 and cost you about $38. That is far cheaper than an extrapolated overpayment finding across a year of upcoded claims. Book a demo to see how Pabau prompts for session start and stop times and files the 90834 claim from the same note.

Continue your research

Need the intake visit coded too? CPT code 90791 covers the psychiatric diagnostic evaluation that usually opens a course of 90834 sessions.

Session turned into a crisis? CPT code 90839 sets out the crisis psychotherapy code and the time rules that separate it from 90834.

Billing a state Medicaid program? HCPCS code H0032 covers a mental health service code that many state programs use alongside CPT.

Want the claim to pass first time? What makes a clean claim lists the fields a payer checks before it accepts a claim for processing.

Already sitting on 90834 denials? Denial management in healthcare walks through triaging, appealing, and preventing repeat rejections.

Frequently asked questions