90834 CPT Code: Individual Psychotherapy, 38–52 Minutes

What 90834 Covers

90834 covers individual psychotherapy sessions lasting 38 to 52 minutes. Only actual face-to-face time with the patient counts toward the clock. Documentation, travel, care coordination, and other non-contact activities do not apply. The 38-52-minute range is a strict boundary. Sessions under 38 minutes should be billed as 90832, while those reaching 53+ minutes qualify for 90837.

During a 90834 session, the focus remains on treating psychiatric conditions using appropriate approaches, such as cognitive-behavioural therapy, supportive counselling, interpersonal psychotherapy, or other evidence-based methods.

Note that 90834 is reserved for ongoing treatment, not initial diagnostic evaluations. Use 90791 or 90792 for initial diagnostic evaluations.

When to use 90834

Use 90834 when face-to-face psychotherapy time falls between 38 and 52 minutes, and you’re not billing an E/M service during the same encounter.

Choose the right code to steer clear of common billing pitfalls:

• 90834 vs. 90832: 90832 covers 16–37 minutes. Do not round up a 35-minute session to 90834.

• 90834 vs. 90837: 90837 is reserved for 53+ minutes. Even if you scheduled a 60-minute slot, if the actual documented session ran only 50 minutes, bill 90834, not 90837. 

• 90834 vs. 90836: 90836 is the 38-52-minute psychotherapy add-on used when prescribers are also billing an E/M service. If medication management is part of the encounter, apply 90836 instead of 90834.

Documentation that Keeps 90834 Paid

While 90834 is a moderate-risk code, it remains vulnerable to time-based audits. To secure payment, focus on these four essential elements:

• Session time: Record the exact start and end times to confirm the session fell within the 38–52-minute range. 

• Therapeutic process: Describing the modality used, the primary clinical focus, and the patient’s level of engagement shows that the session was purposeful and thoughtfully structured.

• Medical necessity: Connect the session content to the patient’s DSM-5 or ICD-10 diagnosis and current treatment plan. Explain why this level of care was necessary and how it addresses their specific needs at this point in treatment.

• Progress notes: Highlight the patient’s response to the interventions, any observable shifts in symptoms and outline clear next steps. This demonstrates that the therapy is effective and moves the patient forward with intention.

Common Denial and Audit Triggers

• Inaccurate time. Recording time outside the 38–52-minute range results in automatic denials.

• Upcoding patterns: Consistently documenting exactly 52 minutes across multiple sessions raises suspicion that the provider is deliberately avoiding the longer 90837 code, suggesting upcoding.

• Vague or generic descriptions: These make it difficult for reviewers to see the clinical necessity and medical relevance of the service.

• Duplicate same-day billing: Billing two units of 90834 combined with 90832 for the same patient and provider conflicts with payer rules on time aggregation.

Telehealth Billing

90834 is covered via telehealth by Medicare and most commercial payers. Use modifier 95 for real-time audio-video sessions and modifier 93 for audio-only delivery where covered. POS 02 applies when the patient is outside their home, whereas POS 10 applies to home-based telehealth. Audio-only coverage under Medicare (90834) requires verification against current MAC guidance. 

How 90834 Pairs with Other Codes

90834 cannot be billed alongside an E/M service in the same encounter. If you’re providing psychotherapy in addition to medical management, use add-on code +90836. 

Additionally, 90834 can be billed on the same date as a psychiatric diagnostic evaluation (90791) only where payer policy permits same-day pairing, with modifier 59 to indicate a distinct service.

Frequently Asked Questions

What is the difference between 90834 and 90837?

90834 covers individual psychotherapy of 38 to 52 minutes, whereas 90837 covers sessions of 53 minutes or more. 

Can I bill 90834 for a standard 45-minute session?

Yes. A 45-minute face-to-face psychotherapy session falls within the 90834 range and is correctly billed at this code.

What is the difference between 90834 and 90836?

90834 is used when no E/M service is billed in the same encounter. 90836 is an add-on code for 38–52 minutes of psychotherapy delivered by a prescribing provider, administered alongside an E/M service during the same visit.