2026 CPT Code 90837 Billing Guide for Behavioral Health Compliance

Properly billing psychotherapy is essential to the functioning of behavioral health practices in order to ensure a consistent revenue stream. One of the codes that is commonly reported for psychotherapy is the CPT Code 90837 Billing Guide  which is time based, requires documentation, has medical necessity requirements, and has specific payer requirements.

Incomplete documentation, authorization issues, improper diagnosis coding, and claim edits can cause payment timeliness issues or unnecessary claim denials. This 2026 90837 CPT Code Billing Guide covers the coding guidelines, documentation guidelines, RVU factors, reimbursement factors, and denial prevention strategies practices should be aware of.

What Is the 90837 CPT Code?

The 90837 CPT Code is for one hour of individual psychotherapy with the patient. It's part of the psychotherapy code family that's used when psychotherapy is used without another separately reported E/M service. CMS provides codes 90832, 90834 and 90837 for psychotherapy without E/M codes.

The code should correspond with the psychotherapy service listed on the medical record. Providers are thus advised not to use 90837 solely due to the one hour appointment.

The medical necessity and length of the service need to be supported by the surrounding clinical documentation. These factors can be relevant when payers review your claims, request your medical records or conduct post payment audits.

90837 CPT Code Time Requirements in 2026

Time is one of the most important considerations when reporting 90837. Medicare identifies psychotherapy codes as time-based services and instructs providers to document start and stop times or total time. Its current billing guidance places 90837 CPT Code at 53 minutes or more.

Medicare's psychotherapy timing guidance is structured as follows:

These ranges should not be treated as universal rules for every payer. Commercial plans and Medicaid programs have their own coverage and billing policies.

Your billing team should verify the applicable payer policy before applying Medicare timing rules to another plan. The time of the scheduled appointment also does not constitute billable psychotherapy time. Sixty-minute sessions may involve activities or interruptions that impact the documented psychotherapy session time.

Documentation Requirements for 90837 CPT Code Claims

Strong documentation connects the service delivered with the code submitted. CMS requires medical records to support the selected diagnosis and CPT code, while time-based psychotherapy services require appropriate documentation of time.

A complete psychotherapy record should establish what happened during the session. It should also demonstrate why the service was medically necessary for the patient.

Depending on payer requirements, documentation should address:

• Patient identification
• Date of service
• Psychotherapy duration
• Start and stop times or total time
• Diagnosis
• Medical necessity
• Clinical interventions
• Patient response
• Treatment goals
• Progress toward goals
• Provider identity and credentials
• Treatment plan relevance

Documentation should remain consistent across the claim, treatment plan, and clinical note. Conflicting information creates additional questions during claim review.

For example, the claim might report 90837 CPT Code while the note documents only 45 minutes. That discrepancy gives the payer a clear reason to question the submitted code.

When Should Providers Bill 90837 CPT Code?

Providers should report 90837 CPT Code when the documented psychotherapy service satisfies the applicable coding and payer requirements. The decision should follow the service actually delivered rather than the appointment template used by the practice.

Medical necessity also needs to support the treatment provided. A longer session does not independently establish medical necessity for every patient or diagnosis.

Before submitting the claim, your billing workflow should confirm:

1. Individual psychotherapy was provided.
2. The documented time supports the selected code.
3. The diagnosis supports medical necessity.
4. The treatment relates to the patient's clinical needs.
5. The provider meets applicable payer requirements.
6. Authorization requirements were satisfied.
7. The record supports the billed service.

This approach helps prevent both unsupported upcoding and unnecessary undercoding.

90837 vs 90834 vs 90832

The main distinction between these psychotherapy codes involves documented service time. CMS instructs providers to select the code closest to the actual psychotherapy time within its applicable time ranges.

The difference matters financially because selecting the wrong code affects the claim's expected reimbursement. It also creates compliance exposure when the submitted code does not match the clinical record.

Your practice should therefore build coding edits around documented psychotherapy time. These edits should occur before claims reach the payer.

Can 90837 CPT Code Be Billed With E/M?

90837 CPT Code represents psychotherapy without an E/M service. When qualifying psychotherapy is performed with an E/M service, CMS identifies 90838 as the psychotherapy add-on code for 60-minute psychotherapy.

The E/M service and psychotherapy service must be separately identifiable. CMS also requires psychotherapy time to be documented separately from E/M time when the services are combined.

This distinction prevents practices from reporting 90837 alongside an E/M code simply because both services occurred during one encounter. The record needs to support the specific services reported.

Modifier 25 also should not be added automatically to bypass an edit. It should be used when the applicable E/M requirements are satisfied.

How 90837 CPT Code RVUs Affect Payment?

Medicare payment is based on the relative values assigned to the service, geographic adjustments, and the applicable conversion factor. CMS explains that each Medicare locality has GPCIs for work, practice expense, and malpractice.

The simplified concept is:

Adjusted work RVU + adjusted practice expense RVU + adjusted malpractice RVU × conversion factor = payment

The actual calculation contains additional Medicare payment rules and adjustments. Practices should therefore use the CMS Physician Fee Schedule Look-Up Tool or applicable official files when calculating locality-specific reimbursement.

Commercial payer reimbursement follows the contracted rate rather than automatically following Medicare's RVU-based amount.

90837 CPT Code RVU and Medicare Reimbursement

The reimbursement for CPT 90837 is dependent on RVU values, geographic adjustments and the Medicare conversion factor. The national figure is a good base for financial planning, but financial practices should check their local rates

The $167.00 amount is a national baseline, not a universal payment rate. Geographic practice cost adjustments can change the final Medicare allowed amount for individual practices.

Commercial payer reimbursement can also differ from Medicare rates. Contract terms, payer policies, provider participation, and applicable claim adjustments can affect the final payment.

For CFOs and practice administrators, the more useful metric is actual reimbursement per completed 90837 encounter. Comparing contracted payments against expected Medicare rates can help identify unfavorable payer contracts and reimbursement gaps.

90837 CPT Code Place of Service Billing Rules

Place of service reporting tells the payer where the psychotherapy service occurred. For 90837, the correct POS code depends on the actual setting and whether the session occurred in person or through telehealth.

Behavioral health practices should not select POS 11 simply because office-based psychotherapy is common. The billing team should verify the patient's location, provider location, service setting, and payer requirements before submitting the claim.

The most relevant POS codes include:

The most important to review for most behavioral health practices are POS 11, POS 10, and POS 02. The settings deal with typical office-based and teletherapy psychotherapy workflows.

90837 CPT Code Telehealth Billing in 2026

Telehealth adds another layer to psychotherapy billing because the practice must validate both the clinical service and the remote-service requirements. CMS continues to publish specific Medicare telehealth policies and updates.

Your team should verify the current requirements before submitting each telehealth claim.

Key checks include:

• Patient location
• Provider location
• Eligible service
• POS requirements
• Modifier requirements
• Provider licensure
• Authorization
• Documentation
• Payer-specific coverage

Do not assume one telehealth billing configuration works across every payer. A payer-specific billing matrix helps your team maintain consistent claim rules without applying Medicare requirements incorrectly to commercial plans.

Why 90837 CPT Code Claims Get Denied

A 90837 denial can usually be traced back to one of the areas of the revenue cycle where it is occurring. A quick check of the denial code doesn't necessarily tell you the reason for the denial in operation.

The financial response should match the root cause. For instance, issues with repeated authorizations should be reviewed for eligibility and authorization processes. The need for more coordination between clinical and billing staff for repeated documentation denials. Filing the same claim again is not a solution to a systemic billing issue.

How to Prevent 90837 CPT Code Denials

Denial prevention works best before claim submission. Your billing team should build validation checkpoints into the normal workflow. Start with eligibility and authorization verification. Then validate the clinical documentation, psychotherapy duration, diagnosis, provider information, and service location.

A practical workflow includes:

1. Verify patient eligibility.
2. Check authorization requirements.
3. Confirm provider enrollment.
4. Capture psychotherapy duration.
5. Complete clinical documentation.
6. Validate diagnosis coding.
7. Confirm medical necessity.
8. Review place of service.
9. Validate applicable modifiers.
10. Run claim edits.
11. Submit the clean claim.
12. Analyze payer responses.

The final step matters because denial data should improve the upstream process. If the same error appears every month, management should investigate why the error continues.

Financial Impact of 90837 CPT Code Billing Errors

Even modest claim problems become financially significant when they occur across large psychotherapy volumes. The impact depends on payer mix, contracted rates, claim volume, denial frequency, staff rework, and successful collections.

Consider an illustrative example.

A behavioral health practice submits 500 90837 CPT Code claims each month. If 8% require denial follow-up or correction, 40 claims become affected each month.

Assume an average allowed amount of $120 per affected claim. The associated monthly reimbursement exposure would equal $4,800.

Annualized, the same pattern represents $57,600 in affected reimbursement.

This is an illustrative calculation, not an industry benchmark. Actual financial exposure should come from your own claims, allowed amounts, denial data, and A/R reports.

The more useful question for leadership is why those claims failed. Fixing the recurring cause produces greater value than repeatedly working the same denials.

How Behavioral Health RCM Services Improve 90837 Billing

Behavioral health RCM services should connect coding accuracy with the broader revenue cycle. The objective is to identify billing problems before they become denials, aging A/R, or write-offs.

A specialized workflow can support:

• Eligibility verification
• Authorization management
• CPT coding review
• Documentation checks
• Claim scrubbing
• Payer rule validation
• Denial management
• A/R follow-up
• Underpayment review
• Payer trend analysis
• Revenue reporting

The financial value comes from controlling the entire claim lifecycle. A clean claim still needs timely payment posting, denial monitoring, and A/R follow-up.

Leadership should also review performance by payer and provider. This helps identify whether reimbursement problems come from clinical documentation, payer behavior, coding workflows, or collection processes.

90837 CPT Code Billing Compliance Checklist

Use the following checklist before submitting claims:

This checklist should operate as part of the billing workflow. It should not become a tool used only after a payer rejects the claim.

Key 90837 CPT Code Takeaways for 2026

There needs to be alignment between the clinical record and the submitted claim for accurate billing of 90837. Claim accuracy is determined by a number of factors, such as time, medical necessity, diagnosis coding, provider requirements, and payer policies.

Medicare considers 90837 CPT Code to be a 60-minute psychotherapy code and applies 53 minutes or more to psychotherapy coding guidance in the Medicare Coverage Support. Providers should capture the psychotherapy time accurately, and choose the code that is most similar to the actual time spent recorded.

While RVUs give a financial view, they are not necessarily the same as an actual reimbursement. The geographic adjustment to Medicare payment is based on the Physician Fee Schedule methodology and geographic factors.

The best strategy for behavioral health CFOs and practice administrators is to be accurate in coding and to report on those codes. Track provider productivity, A/R, payment variance, denial rates and monitor reimbursement simultaneously.

Frequently Asked Questions