CPT Code 90834: 45-Minute Therapy Billing (2026)

• CPT Codes
• 90834

CPT Code 90834: 45-Minute Therapy Billing (2026)

90834 billing guide — time range, 2026 reimbursement rates, 90834 vs 90837 selection, documentation, and facility billing rules.

Quick Reference

Code

90834

Code System

CPT

Category

CPT Codes

Published

Mar 4, 2026

Updated

Jun 12, 2026

Reading Time

15 min

CPT® is a registered trademark of the American Medical Association. All CPT code descriptions on this page are paraphrased in original wording; consult the current CPT® codebook published by the AMA for authoritative descriptors.

Understanding CPT Code 90834: Individual Psychotherapy, 45 Minutes

CPT code 90834 represents individual psychotherapy lasting approximately 45 minutes, covering sessions with 38 to 52 minutes of face-to-face time. This is the most commonly billed psychotherapy code in behavioral health and serves as the standard billing code for typical individual therapy sessions across treatment centers, outpatient clinics, and private practices.

For behavioral health organizations, 90834 is often the highest-volume therapy code on the claims ledger. A treatment center with 50 patients in residential or PHP care might bill dozens of 90834 sessions per week. Because of this volume, even small billing errors or documentation gaps in 90834 claims can have a significant financial impact across the organization.

Definition and Purpose

CPT 90834 reports a one-on-one psychotherapy session in the 45-minute range — 38 to 52 minutes of face-to-face treatment time. The code applies to psychotherapy services using any recognized therapeutic modality — including cognitive behavioral therapy, dialectical behavior therapy, motivational interviewing, psychodynamic therapy, EMDR, and other evidence-based approaches — delivered in an individual format.

The purpose of 90834 is to capture the clinical work of a standard individual therapy session. The 45-minute session has been the anchor of psychotherapy practice for decades, providing sufficient time for meaningful therapeutic engagement while allowing clinicians to maintain a sustainable caseload. The 38-52 minute time window reflects the typical rhythm of clinical sessions: a few minutes for settling in and establishing rapport, 30-40 minutes of focused therapeutic work, and a brief closing period for summarizing and planning.

In behavioral health treatment settings, 90834 captures the individual therapy sessions that form the backbone of clinical programming, including individual sessions with primary therapists, individual trauma processing sessions, and one-on-one therapeutic work addressing specific treatment plan goals.

90834 Reimbursement Rates by Year

Rates reviewed: June 2026. Medicare national non-facility amounts below are the baseline; actual payment varies by geographic locality and facility setting. Pull current figures from the CMS Physician Fee Schedule lookup tool ↗ before relying on any table — including this one.

90834 pays meaningfully less than 90837 — in 2026 the 60-minute code runs $53.10 higher per session at Medicare national non-facility rates ($167.00 vs $113.90). That gap is the economic engine behind payer scrutiny of routine 90837 billing, and it is why the 90834-vs-90837 selection question matters at portfolio scale: across a facility roster billing hundreds of sessions a month, code selection discipline is a six-figure-a-year issue in both directions — upcoding risk one way, forfeited revenue the other.

Rates have been trending upward since the CY 2024 Physician Fee Schedule final rule adopted phased work-value increases for the timed psychotherapy codes, per the American Psychological Association’s summary ↗, with a further lift from the CY 2026 conversion-factor increase ↗. Medicaid rates vary significantly by state — historically as low as the mid-$50s and as high as $120 — and commercial rates depend on contracted fee schedules.

90832 vs 90834 vs 90837: Time Ranges

The three timed individual psychotherapy codes divide cleanly by documented face-to-face minutes:

Code selection is mechanical once the time is documented: under 38 minutes is 90832, 53 or more is 90837, everything between is 90834. The judgment calls live at the boundaries — which is why start and stop times, not session labels, drive the code.

When 90834 Is the Defensible Default

90834 is the flip side of the 90837 payer-scrutiny story: payers rarely question it. It matches the standard 45–50 minute clinical hour, it is the statistical norm in outpatient claims data, and it draws essentially no utilization profiling. Three practical rules follow:

• Sessions that end at 45–50 minutes code here. A “therapy hour” that includes scheduling, settling in, and wrap-up routinely yields 45–50 minutes of actual psychotherapy — that is a 90834 session, full stop.
• Rounding up is the audit risk; rounding down is the revenue leak. Billing 90837 without 53 documented minutes is the classic psychotherapy upcoding finding and invites recoupment. Billing 90834 when the note supports 55 minutes simply underpays the work. Both errors are solved by the same habit: exact start/stop times in every note.
• Roster-level selection policy beats per-session improvisation. Facilities should set an explicit policy — documented time drives the code, with defined clinical justifications for full-hour sessions — and monitor the 90834/90837 mix by clinician and program. A roster billing nearly all 90837 looks like an outlier at the group-NPI level; a roster billing accurate 90834 with justified exceptions does not.

When to Use 90834 in Behavioral Health

CPT 90834 is the appropriate code for the majority of standard individual therapy sessions. Common scenarios include:

Do not use 90834 when face-to-face therapy time is less than 38 minutes — use CPT 90832 instead. When sessions run 53 minutes or longer, bill CPT 90837. When psychotherapy is performed in the same encounter as an E&M service by the same provider, use the add-on code CPT 90836 instead of 90834.

• Weekly individual therapy sessions in residential treatment, PHP, IOP, or outpatient programs where the standard session length is 45-50 minutes
• Primary therapist sessions in treatment centers where each patient is assigned a primary therapist for regular individual therapy
• Trauma-focused therapy sessions using CBT, EMDR, or other approaches delivered in a standard 45-minute format
• Substance use disorder counseling sessions focused on relapse prevention, recovery skills, and addressing underlying psychological issues
• Individual sessions within structured programs where 90834 is part of a broader daily or weekly treatment schedule that may also include group therapy ( 90853 ) and family therapy ( 90846, 90847 )

Documentation Requirements

As the highest-volume psychotherapy code, 90834 documentation is frequently reviewed in audits. The clinical record for each 90834 session should include:

Avoid templated notes that read identically from session to session. Auditors look for individualized documentation that reflects the actual clinical work performed in each unique encounter. Notes that appear copy-pasted or that lack session-specific detail are a red flag for recoupment.

• Start and stop times — Document the exact start and stop time of the face-to-face psychotherapy session. This is the single most important documentation element for any time-based code — the 38-52 minute band is the entire basis of selecting 90834 over its neighbors, so the minutes are not supporting detail; they are the claim
• Diagnosis — Current DSM-5-TR diagnosis or diagnoses being addressed in the session
• Therapeutic modality — Identify the specific therapeutic approach used (e.g., CBT, DBT, motivational interviewing, trauma-focused CBT)
• Session content and interventions — Detailed description of the clinical issues discussed, therapeutic interventions employed, and specific techniques applied during the session
• Patient presentation — Clinical observations about the patient’s mental status, affect, engagement, and any notable changes from previous sessions
• Patient response to interventions — How the patient responded to therapeutic techniques, including breakthroughs, resistance, emotional processing, or skill acquisition
• Progress toward treatment plan goals — Explicit connection between session content and the goals identified in the patient’s individualized treatment plan. Note progress, barriers, and any adjustments needed
• Risk assessment — When clinically appropriate, document assessment of suicidality, homicidality, self-harm, and overall safety
• Plan — Next steps, homework or skills practice assigned, topics for future sessions, and any changes to the treatment approach

Billing and Reimbursement

Current Medicare amounts are in the rate table above. Key billing considerations:

• Volume impact — Because 90834 is the most frequently billed therapy code, optimizing claim accuracy for this code has a proportionally larger impact on organizational revenue than any other single psychotherapy code
• Facility versus non-facility rates — The differential between facility and non-facility rates is significant. Treatment centers operating under facility billing arrangements should understand how this affects per-session revenue
• Time boundary discipline — Sessions must genuinely fall within the 38-52 minute range. Audits frequently reveal patterns where documented times cluster at exactly 45 minutes regardless of actual session length. Varied, authentic time documentation is more defensible
• Payer-specific policies — Commercial payers reimburse 90834 below 90837, and some have policies that favor or discourage one code over the other. Review payer contracts to understand rate differentials
• Authorization requirements — Many payers require prior authorization for ongoing psychotherapy beyond a specified number of sessions. Track authorization status to avoid denials for sessions that exceed the authorized quantity
• Concurrent review — In residential and PHP settings, concurrent review by payers may affect the number of individual therapy sessions authorized per week. Align billing practices with the approved treatment plan

License-Level Requirements

90834 can be billed by qualified mental health professionals operating within state scope of practice: psychiatrists and other physicians, licensed psychologists, LCSWs, LMFTs, LPCs/LMHCs, and psychiatric nurse practitioners or clinical nurse specialists. Medicare also enrolls marriage and family therapists and mental health counselors as billable provider types.

The practical compliance work is at the edges: provisionally licensed clinicians usually must bill under a supervising clinician per payer rules (and some payers will not credential provisional licenses at all); state scope-of-practice rules differ on which license types may provide psychotherapy independently; and every rendering provider must be credentialed with the specific payer billed. Facilities with rotating clinical rosters should verify license, credentialing, and supervision status per provider, per payer — not once a year.

90834 in Facility Programs

In residential, PHP, and IOP billing, the threshold question for any individual session is whether it is separately billable or inside a bundle:

• Per-diem and bundled contracts. Where the payer reimburses the program through a per diem or case rate — H0015 for IOP, H0035 or revenue-code billing for PHP, negotiated residential day rates — scheduled individual therapy is typically inside the bundle, and a separate 90834 line on top of the per diem is double billing. Some contracts carve professional services out for fee-for-service billing alongside the program rate; the contract decides.
• Same-day pairing. A patient may receive individual therapy (90834), group therapy ( 90853 ), and family therapy ( 90846 or 90847 ) on the same date. Each service needs separate documentation, non-overlapping times, and modifier 59 or XE on the distinct service where NCCI procedure-to-procedure edits apply — check the current NCCI Policy Manual ↗ psychiatric chapter.
• Add-on interplay. 90785 (interactive complexity) may be reported with 90834 when communication barriers complicate the session — common in adolescent work with discordant caregivers. When the same provider delivers an E&M service plus psychotherapy in one encounter, the session bills as the E&M code with add-on 90836 (the 45-minute add-on twin), not as 90834.
• Medicaid H-code routing. Some state Medicaid programs pay individual therapy in program settings through state-defined HCPCS codes rather than 90834. Check the state behavioral health fee schedule before assuming the CPT code applies.

Common Modifiers

Modifiers applicable to CPT 90834 include:

When billing 90834 on the same date as other services (group therapy, family therapy, psychiatric evaluation), ensure each service has distinct documentation with non-overlapping time periods and separate clinical content.

• Modifier 95 — Synchronous telemedicine service rendered via real-time interactive audio and video. Pair with the right place of service: POS 10 when the patient is at home, POS 02 elsewhere. Medicare permits audio-only delivery of mental health services when the patient is at home and cannot or does not consent to use video — confirm 90834’s current status on the CMS telehealth services list ↗
• Modifier 59 or XE — Distinct procedural service or separate encounter. Used when 90834 is billed on the same date as another service that might otherwise appear bundled (e.g., a group therapy session with the same provider on the same day)
• Modifier 76 — Repeat procedure by the same physician on the same day. Used in rare clinical situations where two separate individual therapy sessions with the same provider are medically necessary on the same date
• Modifier 52 — Reduced services. Applicable when the session was interrupted or not completed as planned but still fell within the 38-52 minute time range for the therapy component that was delivered
• Modifier HE — Mental health program. Some Medicaid programs require this modifier to indicate the service was provided as part of a behavioral health program

Compliance Considerations

Given the high volume of 90834 claims in behavioral health, compliance monitoring for this code should be a priority:

Time accuracy is paramount. The most common audit finding for 90834 is inadequate time documentation. Every session note must include start and stop times that fall within the 38-52 minute window. Sessions that consistently end at exactly the same time (e.g., every session documented as 45 minutes) may trigger scrutiny. Document actual session times, which naturally vary from session to session.

Upcoding from 90834 to 90837 is an audit target. Some organizations have historically billed 90837 (53+ minutes) as the default code, even when actual session time fell in the 90834 range. This practice constitutes upcoding and can result in recoupment, penalties, and exclusion from payer networks. Bill the code that accurately reflects the documented face-to-face time.

Downcoding risk also exists. Conversely, billing 90834 when the actual session lasted 53 minutes or more results in lost revenue. Clinicians should be trained to accurately document time so that the correct code is selected for each session.

Treatment plan alignment is essential. Every 90834 session should connect to goals in the patient’s treatment plan. Auditors review whether psychotherapy sessions address the identified clinical needs or whether the sessions appear routine without clear therapeutic purpose. Treatment plans should be updated regularly to reflect current medical-necessity expectations.

Credentialing and scope of practice must be verified for each provider billing 90834 — see the license-level section above.

Same-day billing rules require attention in treatment center environments. A patient may receive individual therapy (90834), group therapy ( 90853 ), and family therapy ( 90846 or 90847 ) on the same day. Each service must have separate documentation with non-overlapping times and must be provided by an appropriately credentialed provider.

Related Billing Codes

• 90792
• 90832
• 90833
• 90836
• 90837
• 90838

Reference tables

Common questions

Official sources

• CMS Physician Fee Schedule lookup toolcms.gov
• CY 2026 conversion-factor increasecms.gov
• NCCI Policy Manualcms.gov
• CMS telehealth services listcms.gov