CPT 90834 is the code for individual psychotherapy, and the detail that matters most is the time window, not the “45 minutes” label. CMS places 90834 in the 38-52 minute range, with 90832 covering 16-37 minutes and 90837 covering 53 minutes or more. This guide covers when to use 90834, who can bill it, how to document and bill it, what drives reimbursement, and how telehealth fits in.
What Is CPT Code 90834?
CPT 90834 describes psychotherapy with the patient for 45 minutes. It represents an individual, one-on-one psychotherapy session in which the clinician uses therapeutic techniques to treat a mental health condition. It’s commonly called the “45-minute psychotherapy code” because 45 minutes is the midpoint of its time range.
It’s typically used by psychologists, psychiatrists, licensed clinical social workers, licensed professional counselors, marriage and family therapists, and other qualified mental health professionals. The code descriptor comes from the American Medical Association’s CPT code set.
How Long Is a CPT 90834 Session?
Does CPT 90834 mean exactly 45 minutes? No. Any documented psychotherapy session of 38 to 52 minutes falls under 90834. A 40-minute session and a 50-minute session are both billed as 90834.
When Should You Use CPT Code 90834?
Use 90834 when:
- The service is individual psychotherapy
- Psychotherapy is the primary service provided
- The patient and provider circumstances meet the payer’s requirements
- The documented face-to-face psychotherapy time is 38-52 minutes
When should you not use it? Avoid 90834 for:
- Shorter sessions (90832) or longer sessions (90837)
- Group therapy (90853)
- Family psychotherapy (90846, 90847)
- Psychiatric diagnostic evaluations (90791, 90792)
- Psychotherapy performed alongside an E/M service (see 90836 below)
Who Can Bill CPT Code 90834?
Several provider types commonly bill it, including psychiatrists, psychologists, clinical social workers, professional counselors, marriage and family therapists, and psychiatric nurse practitioners. This does not mean every provider can bill it in every situation. Eligibility depends on:
- Scope of practice and state licensure
- Payer rules and credentialing status
- Applicable regulations (Medicare and Medicaid differ from commercial plans)
Always confirm eligibility with each payer before billing. If you’re not yet enrolled, mental health provider credentialing is the first step.
CPT 90834 vs 90832 vs 90837
| Code | General Psychotherapy Time |
| 90832 | 16-37 minutes |
| 90834 | 38-52 minutes |
| 90837 | 53+ minutes |
CPT 90834 vs 90836
- 90834: psychotherapy without an E/M service
- 90836: psychotherapy performed with an E/M service, billed as an add-on code (also 38-52 minutes)
CMS identifies 90836 as the 45-minute psychotherapy add-on used with an appropriate E/M code. It’s typically used by prescribers such as psychiatrists and psychiatric NPs who do medication management and psychotherapy in the same visit. If you’re not billing an E/M, 90834 is the right code.
How to Bill CPT Code 90834
At a high level, a claim for 90834 includes:
- CPT code 90834
- Date of service
- Diagnosis code(s) linked to the service
- Rendering and billing provider information
- Place-of-service code
- Modifiers, when applicable (for example, telehealth or supervision-related modifiers)
- Any payer-specific requirements, such as prior authorization or session limits
Requirements vary by payer, so check each payer’s policy rather than assuming one set of rules applies everywhere. Behavioral health providers who bill other services, such as ABA therapy billing, face their own payer-specific rules.
Documentation Requirements for CPT 90834
CMS states that psychotherapy time must be documented and that the record must support the service. A strong note includes:
- Start and stop times, or total psychotherapy time
- The psychotherapy provided (interventions and techniques used)
- The patient’s response to treatment
- Treatment plan goals
- Progress toward those goals
- Diagnosis and medical necessity
- Provider signature and credentials (authentication)
If the time isn’t documented, the claim is hard to defend in an audit, even if the session was clinically sound.
CPT 90834 Reimbursement Rate
There is no single price for CPT 90834. Published figures differ from source to source because reimbursement depends on:
- Payer: Medicare, Medicaid, and each commercial insurer set their own rates
- Location: Rates are adjusted geographically
- Provider type and credentials: Some payers pay a percentage of the physician rate for non-physician providers
- Contract terms: Negotiated in-network rates differ from out-of-network payments
- Place of service: Facility and non-facility settings can pay differently
To find your actual rate, check the CMS Physician Fee Schedule for Medicare and the fee schedules in your payer contracts for everything else.
CPT 90834 and Telehealth
Yes, 90834 can generally be delivered via telehealth, but the rules depend on the payer and change over time. Key points:
- Requirements: Medicare telehealth rules for behavioral health, including in-person visit requirements and originating-site rules, have been updated repeatedly. Check current CMS guidance.
- Modifiers: Many payers require modifier 95 or GT; some Medicare situations use different modifiers.
- Place of service: POS 02 (telehealth outside the home) or POS 10 (telehealth in the home) is commonly used, but payers differ.
- Payer rules: Commercial plans and Medicaid vary by state and plan.
- Documentation: Note that the session was via telehealth, the patient’s and provider’s locations, and the technology used, in addition to the standard elements above.
CPT 90834 Billing Example
A licensed therapist provides individual psychotherapy to an established patient. The session runs from 2:00 to 2:47 p.m., so the documented psychotherapy time is 47 minutes. The note records the interventions used, the patient’s response, progress toward treatment goals, and the diagnosis.
Because 47 minutes falls within 38-52 minutes, CPT 90834 may apply, subject to payer and documentation requirements. It isn’t 90832 because the session exceeded 37 minutes, and it isn’t 90837 because it didn’t reach 53.
Frequently Asked Questions
Q: Is CPT 90834 exactly 45 minutes?
No. It covers sessions of 38-52 minutes.
Q: Is 90834 used for group or family therapy?
No. Group therapy uses 90853, and family therapy uses 90846 or 90847.
Q: Can 90834 be billed if the session is under 38 minutes?
No. Sessions of 16-37 minutes are billed as 90832.
Q: Does 90834 need prior authorization?
It depends on the payer and plan. Many don’t require it, but some do, or they limit sessions per year. If claim denials or underpayments are a recurring problem, a mental health billing company can help manage the process.
