90834 CPT Code: 45-Minute Psychotherapy Billing Guide

CPT code 90834 is the code for individual psychotherapy of about 45 minutes. Under standard CPT time rules, you report it when psychotherapy time with the patient (with or without a family member present) is 38 to 52 minutes. That range includes the classic 50-minute therapy session, which is why 90834 is one of the most frequently billed psychotherapy codes.

This guide explains what 90834 covers in plain words, how it compares to 90832 and 90837, what to document, telehealth billing notes, and how to list 90834 on a superbill for out-of-network reimbursement.

What is the 90834 CPT code description?

The official descriptor for 90834 is part of the AMA’s copyrighted CPT code set. In plain words, 90834 describes a psychotherapy session of roughly 45 minutes with the patient, where a family member may also take part. It is one of three time-based individual psychotherapy codes that are reported on their own, without a medical evaluation and management (E/M) visit.

Clinicians who commonly bill 90834 include psychologists, licensed clinical social workers, licensed professional counselors, marriage and family therapists, psychiatric nurse practitioners and psychiatrists. Which license types a specific payer will reimburse depends on that payer’s credentialing rules and on state scope-of-practice law.

What is the time requirement for 90834?

The CPT time rule says a unit of time is reached once the midpoint is passed. Applied to the three individual psychotherapy codes, that produces these commonly used ranges:

So a session that runs 38 minutes is a 90834, and one that runs 52 minutes is still a 90834. The moment you document 53 minutes or more, 90837 becomes the correct code. Fewer than 16 minutes of psychotherapy generally is not reportable with these codes.

What time counts?

Only time spent providing psychotherapy to the patient, or to the patient and a family member, counts. Writing the progress note afterward, handling payment, scheduling the next appointment or waiting for a late client to join a video call does not.

When does a 45-minute session bill as 90834?

Almost always. Here is how common scheduling situations map to codes:

Two takeaways:

1. Bill what you delivered, not what you scheduled. A booked hour that ends at 48 minutes is a 90834.
2. Late arrivals can push you below 38 minutes. If a 45-minute slot shrinks to 35 minutes, the session drops to 90832.

90834 vs 90837: how do you choose?

The difference is purely time. 90834 covers 38–52 minutes; CPT code 90837 covers 53 minutes or more. Neither code is a better choice in the abstract; the right one is whichever matches the documented session.

A few practical points clinicians weigh:

• Scrutiny. 90837 tends to draw more payer review than 90834 because it is typically paid at a higher rate. If you bill 90837, your notes need to show why the longer session was needed.
• Authorization. Some plans require prior authorization or apply extra review for frequent 90837 use but not for 90834. Policies vary by payer.
• Client cost. For out-of-network clients, what they get back depends on their plan’s allowed amount for the code they were billed. Rates vary widely by plan and region, so direct clients to their insurer for specifics, or look up Medicare rates in the CMS Physician Fee Schedule lookup tool if you need a public reference point.
• Consistency. If your practice runs 50-minute sessions, you are billing 90834. Billing 90837 for those sessions is a coding error, not a judgment call.

What should a 90834 progress note include?

Payers that audit psychotherapy claims look for the same core elements regardless of code length. For 90834:

1. Start and stop times (for example, 2:05–2:52) or total psychotherapy time. Some payers require start and stop times specifically, so recording them covers you either way.
2. Interventions and modality, such as CBT, ACT, motivational interviewing or psychodynamic work, and the client’s response.
3. Progress toward treatment plan goals, tied to the diagnosis on the claim.
4. Who attended. If a family member joined, note it, along with confirmation that the patient was present for at least part of the session.
5. Risk assessment when clinically indicated.
6. Telehealth details when applicable: modality, client location and consent, as your payer and state require.

Which codes can (and can’t) be combined with 90834?

Can be added:

• 90785 (interactive complexity), when a qualifying factor makes communication during the session harder, such as managing disruptive communication between participants, a caregiver whose behavior interferes with treatment, a mandated report following a sentinel event, or using play equipment with a child who cannot communicate at an adult level. Interpretation alone does not qualify.

Should not be combined:

• 90832 or 90837 for the same session. They are alternatives, not add-ons.
• An E/M code. Prescribers who do a medical visit plus about 45 minutes of psychotherapy report the E/M code plus add-on 90836, not 90834.
• 90791 on the same day by the same provider, in general. Intake billing rules are covered in our CPT code 90791 guide.
• Family therapy codes (90846, 90847) for the same time. If the session is family psychotherapy, use a family code instead.

How do you bill 90834 for telehealth?

90834 is one of the codes most commonly delivered by telehealth. The claim usually needs two extra details:

• Place of service (POS). Many payers use POS 10 when the patient is at home and POS 02 when the patient is somewhere else. Some commercial payers instead want the in-person POS (often 11) plus a modifier. Our telehealth place of service codes guide explains the difference.
• Modifier. Modifier 95 is common for real-time audio-video. Some payers still use GT, and some use 93 for audio-only.

Telehealth billing rules for both Medicare and commercial payers have changed several times since 2020. Check each payer’s current policy and current CMS guidance before you finalize your superbill template, and update it when the rules change.

How does 90834 look on a superbill?

Out-of-network clients typically submit a superbill to their insurer with a claim form or through the insurer’s member portal. Each session is one service line. Here is an example (fictional data):

Diagnoses:

• A — F43.23 (adjustment disorder with mixed anxiety and depressed mood)
• B — F41.1 (generalized anxiety disorder)

The provider block includes your practice name, your name and credentials, address, phone (for example (555) 010-0147), NPI (for example 1234567893), Tax ID (for example 12-3456789) and license number. The client block includes name, date of birth, address, insurance carrier, member ID and group number.

Notice that the in-office line uses POS 11 with no modifier, while the video session uses POS 10 with modifier 95. Mixing in-person and telehealth sessions on one superbill is fine, as long as each line is coded correctly. For a full walkthrough of a finished document, see our superbill example.

Common 90834 billing mistakes

• Billing the scheduled length. A 45-minute slot that ended at 35 minutes is a 90832.
• No time in the note. Without documented time, a payer cannot verify the code.
• Billing 90834 with an E/M visit. Use E/M plus 90836 instead.
• Missing diagnosis pointer on the service line.
• Telehealth POS or modifier that doesn’t match the payer’s rules.
• Discounted fee on the superbill. List your full fee and show any payment separately. The insurer applies its own allowed amount.

Make a 90834 superbill for free

If your clients use out-of-network benefits, the free superbill generator builds a clean superbill in your browser with nothing uploaded. Start with the therapist superbill template, which preloads 90834 and other common psychotherapy codes, then add your client’s details, check the built-in list of missing fields, and print or save as PDF.