CPT Code 90834: A Complete Guide to the 45-Minute Psychotherapy Code

 If you work in outpatient behavioral health, you’ve billed 90834 more times than you can count. It’s the code for a 45-minute individual psychotherapy session, and it’s one of the most common line items on a therapy claim.

But common does not mean simple. The difference between 90834 and the codes around it can come down to a few minutes, and the documentation has to support whichever code reaches the claim. That makes session time, note quality, and payer-specific billing rules especially important.

Key Takeaways

• CPT code 90834 covers individual psychotherapy lasting 38–52 minutes, with 45 minutes serving as the reference point.
• The code may be billed by psychiatrists, psychologists, LCSWs, LPCs, LMFTs, and qualified nurse practitioners or physician assistants as specified by their license and scope of practice and by the rules of the payers.
• Session time should be clearly documented. Start and stop times make it easier to show why 90834 was selected if the claim is later reviewed.
• Eligible telehealth psychotherapy may be rendered using CPT 90834, but the modifiers, place-of-service codes and audio-only codes and rules may vary by payer.
• The selection of 90832, 90834 and 90837 should be based on the documented psychotherapy time, not the reimbursement amount.

What Is CPT Code 90834?

CPT code 90834 is used for an individual psychotherapy session that runs between 38 and 52 minutes. It’s a time-based code, which is the first thing to keep in mind before we get into anything else.

The psychotherapy itself can take different forms, including supportive therapy, behavioral interventions, and insight-oriented approaches. 

They all have the same purpose, which is to assist in coping with symptoms and the development of coping skills and to work toward any treatment goals on the chart.

The AMA, which owns the CPT code set, describes a fairly specific example patient for this code: an adult dealing with depression and agitation due to a lost job. 

That’s just one illustration, though, not a checklist. In practice, 90834 applies across a wide range of diagnoses, as long as psychotherapy is the primary reason for the visit.

If the appointment was really about medication management, that’s a different story. You’d bill an evaluation and management (E/M) code instead, and only add a psychotherapy add-on code if actual therapy happened in that same visit too.

CPT Code 90834 Time Requirements

Since 90834 is time-based, the range matters more than almost anything else on the claim. CMS places CPT 90834 in the 38-to-52-minute psychotherapy range.

It helps to see it next to the codes on either side of it.

Code	Session Length	Typical Use
90832	16 to 37 minutes	Brief check-ins, short structured interventions
90834	38 to 52 minutes	Standard outpatient psychotherapy session
90837	53 minutes or more	Longer individual psychotherapy session

Sessions under 16 minutes should not be billed as psychotherapy at all. The right code depends on how long the session actually ran and whether the note documents that time clearly.

Who Can Bill CPT Code 90834?

A range of licensed mental health providers may bill CPT code 90834 when permitted by their licensure, scope of practice, enrollment status, and payer rules.

• Psychiatrists (MD or DO)
• Clinical psychologists (PsyD or PhD)
• Licensed clinical social workers (LCSW)
• Licensed professional counselors (LPC)
• Licensed marriage and family therapists (LMFT)
• Nurse practitioners and physician assistants providing therapy within scope

The code applies across settings. CPT 90834 may be reported in different eligible care settings, but coverage and billing requirements can vary by payer, provider type, and setting.

Documentation Requirements for CPT Code 90834

Good documentation is what separates a clean claim from one that gets flagged in an audit. Every 90834 note should include five things.

• Psychotherapy time: Document the total psychotherapy time or the session’s start and stop times. Do not rely only on the scheduled appointment slot.
• Subjective section: What did the patient report about their mood, symptoms, and functioning since the last visit?
• Objective section: Your own clinical observations and any relevant mental status findings.
• Assessment: Where the patient stands now, and how that lines up with the treatment goals.
• Plan: What interventions you used, any homework you assigned, and what happens next.

Clear time documentation helps establish that the psychotherapy duration supports the code reported on the claim.

CPT Code 90834 Reimbursement

CPT 90834 generally reimburses more than 90832 and less than 90837, but there is no single payment amount or percentage that applies across payers.

Exact rates vary by payer, geographic locality, and provider type. Medicare rates are updated each year through the Physician Fee Schedule, so check the current year’s rate using the CMS Physician Fee Schedule Look-Up Tool rather than relying on a prior year’s number. Commercial payers often benchmark their own rates against Medicare’s published figures.

Add-On Codes Commonly Paired With CPT 90834

A handful of add-on codes show up next to 90834 depending on what happened during the session.

• +90785 (interactive complexity) – For sessions complicated by things like a third party in the room, communication barriers, or unusually high emotional intensity. It’s never billed by itself.

• +90836 (45-minute psychotherapy add-on) – For when psychotherapy happens alongside a separately identifiable E/M service, like medication management.

• +99050 / +99051 – For sessions held outside normal office hours, including evenings, weekends, or holidays.

None of these work as standalone codes. They’re there to flag extra complexity or unusual timing layered on top of a base code like 90834.

Billing CPT Code 90834 for Telehealth

CPT 90834 is included on Medicare’s CY 2026 Telehealth Services List. Commercial coverage varies by payer and plan.

A few details matter for a clean telehealth claim:

• Depending on the payer and setting, the claim may require a telehealth modifier. 
• For Medicare professional claims, use POS 10 when the patient is at home and POS 02 when the patient is elsewhere. Always verify the payer’s current modifier requirements.
• Note that telehealth consent was obtained, along with the modality used and where both provider and patient were located.
• Document the clinical content the same way you would for an in-person session; nothing changes there.

Audio-only visits sometimes carry their own modifier rules, and those vary more than video does. Don’t assume the same policy applies across every payer.

CPT Code 90834 vs. 90832 and 90837

CPT 90832, 90834, and 90837 represent different psychotherapy time ranges. Choosing between them starts with the actual psychotherapy time documented for the encounter.

90832 applies to 16–37 minutes, 90834 to 38–52 minutes, and 90837 to 53 minutes or more. Medical necessity still matters, but the code should not be selected simply because one reimburses more than another.

Common Mistakes That Trip Up CPT Code 90834 Claims

• Missing or vague psychotherapy time, especially when the only evidence of duration is the scheduled appointment slot rather than the clinical note.
• Reusing the same assessment language session after session instead of reflecting what the patient actually reported.
• Skipping telehealth modifiers, or using a place of service code that doesn’t match across a hybrid caseload.
• Billing 90834 for what was really medication management, instead of using the correct E/M code with a psychotherapy add-on.

None of these look like a big deal in isolation. But multiply any one of them across a full caseload over a full year, and that’s exactly the kind of pattern a payer audit is designed to catch.

Turn CPT Code 90834 Documentation Into a Repeatable Process

Most 90834 claim problems trace back to the same root cause: the scheduling app, the note, and the billing system don’t talk to each other. 

Vozo EHR closes that gap with one connected EHR, so session time, SOAP documentation, and the claim itself always match.

• Customizable behavioral health note templates capture start and stop time, interventions, and treatment goals in the same structured format every session, so nothing depends on memory.
• Voice-to-text charting cuts down on after-hours note writing and reduces the copy-paste habit that weakens documentation over a full caseload.
• Integrated RCM with auto-superbills turns a finished note directly into a claim, so 90834 coding stays consistent with what’s actually documented.
• Real-time insurance eligibility checks confirm coverage before the session, so time isn’t lost to denials after the fact.
• Denial management and claims tracking surface coding patterns, including a heavy 90837 mix, before a payer flags them.
• Built-in telehealth keeps virtual visits connected with the same documentation and billing workflow used for in-person care.

Inconsistent 90834 documentation is rarely one big mistake. It’s a hundred small gaps between the clock, the note, and the claim, and a connected system closes that gap by default.

Start your free trial and see how a connected charting and billing workflow keeps every 90834 claim audit-ready.

Frequently Asked Questions

1. What is the time range for CPT code 90834?

CPT code 90834 is used for single sessions of individual psychotherapy ranging from 38 – 52 minutes, with a midpoint of 45 minutes. If it is a session from 16 to 37 minutes, charge 90832, and if it’s 53 minutes or longer, charge 90837. Documenting the exact start and stop time supports the code choice during any later review.

2. Can CPT code 90834 be billed for telehealth sessions?

Yes. Medicare has included CPT code 90834 in its permanent telehealth list, and most commercial payers pay for a live audio-video session. 

For Medicare professional claims, POS 10 is used when the patient receives telehealth at home, while POS 02 applies when the patient is somewhere other than home. Modifier requirements vary by payer and setting, so verify the current billing policy before submitting the claim.

3. What is the difference between 90834 and 90837?

The codes differ by session length and clinical need. CPT code 90834 covers 38 to 52 minute sessions and is the baseline for most outpatient therapy. 

CPT 90837 applies when psychotherapy lasts 53 minutes or more. The clinical record should support both the documented duration and the medical necessity of the psychotherapy provided.

4. Who is allowed to bill CPT code 90834?

CPT code 90834 can be used by licensed mental health providers within their scope of practice. This can be psychiatrists, clinical psychologists, licensed clinical social workers, licensed professional counselors, licensed marriage and family therapists, and qualified nurse practitioners or physician assistants. This could be an office, outpatient clinic or inpatient facility.

5. What documentation does a CPT code 90834 session need?

Notes should document the psychotherapy time, the patient’s current symptoms and functioning, relevant clinical observations, assessment and progress toward treatment goals, interventions used, patient response, and the treatment plan. 

For time-based psychotherapy codes, clearly documenting total psychotherapy time or start and stop times helps support why 90834 was selected.

Sources

American Medical Association. CPT® code 90834: Psychotherapy, 45 minutes

Centers for Medicare & Medicaid Services. Billing and Coding: Psychiatry and Psychology Services (A57480)

Centers for Medicare & Medicaid Services. Billing and Coding: Psychiatric Diagnostic Evaluation and Psychotherapy Services (A57520)

Centers for Medicare & Medicaid Services. Physician Fee Schedule Look-Up Tool