Psychotherapy billing depends on more than selecting a code that appears to match the scheduled appointment length. Providers must consider the actual psychotherapy time, documentation, medical necessity, payer requirements, telehealth rules, and whether another service was performed during the same encounter.
CPT code 90837 is commonly associated with a longer individual psychotherapy session. Under current CMS billing guidance, the code applies when psychotherapy time reaches at least 53 minutes. Accurate use of the code requires documentation that supports both the service performed and the time reported.
For psychologists, therapists, behavioral health practices, billing teams, and medical coders, understanding these requirements can help support cleaner claims and reduce avoidable coding errors.
What Is CPT 90837?
90837 is a psychotherapy procedure code used for an individual psychotherapy service generally described as a 60-minute session. However, the scheduled duration of an appointment does not determine the code by itself.
CMS guidance places psychotherapy services into defined time ranges:
| Psychotherapy Code | Actual Psychotherapy Time |
| 90832 | 16–37 minutes |
| 90834 | 38–52 minutes |
| 90837 | 53 minutes or longer |
Therefore, a 60-minute appointment does not automatically qualify as CPT code 90837 if the documented psychotherapy portion lasted only 50 minutes. In that situation, the documented time falls within the range associated with 90834
Practices that need help translating clinical documentation into appropriate procedure and diagnosis codes can use professional 90837 description guidance within a broader medical coding workflow. Revline’s coding service reviews clinical documentation, CPT and HCPCS coding, ICD-10-CM codes, and modifiers before encounters move toward billing.
What Is the 90837 CPT Code Time Range?
One of the most important billing requirements is the 90837 CPT code time range.
CMS states that 90837 is used when psychotherapy lasts 53 minutes or longer. The time documented in the medical record should support the code submitted on the claim. CMS also notes that, when time matters for coding or payment, documentation can include either total time or start-and-stop times.
This makes the distinction between the appointment slot and actual psychotherapy time important.
For example:
A patient may have a 60-minute appointment on the provider’s calendar, but if only 48 minutes constitute the psychotherapy encounter, the documentation does not support the 53-minute threshold for 90837.
Conversely, when at least 53 minutes of qualifying psychotherapy is documented, 90837 may be appropriate when the remaining coding and payer requirements are also satisfied.
Does 90837 Session Length Have to Be Exactly 60 Minutes?
No. The commonly used “60-minute psychotherapy” description should not be interpreted as requiring exactly 60 minutes.
The CMS time range begins at 53 minutes. This means the 90837 session length can exceed 60 minutes as well. However, longer encounters may involve additional coding considerations, so providers should follow current CPT, CMS, and payer-specific guidance instead of assuming that extra time can automatically be billed separately.
Documentation Requirements for 90837
Good documentation is important because the claim must show that the reported service was actually provided.
CMS guidance requires medical records to support the selected diagnosis and procedure codes. Records should also contain appropriate patient identification and the signature of the practitioner responsible for the service. When time affects coding and payment, the record should document the relevant time.
For CPT code 90837, documentation should therefore clearly support the psychotherapy encounter rather than simply state that the patient had an appointment.
Depending on the clinical circumstances and payer requirements, a psychotherapy note may appropriately document:
- the patient’s condition and reason for the encounter;
- psychotherapy intervention or therapeutic approach provided;
- relevant clinical response or progress;
- continued treatment considerations;
- documented psychotherapy time;
- appropriate diagnosis information; and
- provider authentication.
The exact documentation format can vary among organizations and payers. The goal is not to add unnecessary wording simply to support a higher-level code. The record should accurately reflect the service that occurred.
Medical Necessity and Billing Accuracy
Time alone should not be treated as the only consideration.
The documentation should support why the psychotherapy service was provided and appropriately represent the patient’s treatment. Billing a longer psychotherapy service simply because a longer appointment was reserved can create coding and compliance concerns.
For Medicare claims, the documentation submitted should support the diagnosis code and the psychotherapy service being reported.
This is where accurate coding and billing workflows become connected. A coding team may validate the procedure code against the note, while the billing team checks claim details, payer information, place of service, modifiers, and other submission requirements.
Revline’s CPT code 90837 reimbursement workflow fits within its broader medical billing process, which includes coding review, claim submission, payment posting, and A/R follow-up.
90837 vs 90834: What Is the Difference?
The most important distinction between 90837 vs 90834 is psychotherapy time.
According to CMS guidance:
- 90834 covers 38–52 minutes.
- 90837 begins at 53 minutes.
Consider two examples.
Example 1: A psychotherapy encounter lasts 50 minutes. Based on the CMS time ranges, that falls within 90834.
Example 2: The qualifying psychotherapy service lasts 57 minutes. The time threshold falls within the range for CPT code 90837.
The provider should not round a 50-minute psychotherapy encounter up to 53 minutes merely because the appointment was booked for one hour. Actual documented psychotherapy time matters.
Accurate differentiation between related codes can help support claim consistency and reduce the risk of avoidable coding corrections.
How Does 90837 Reimbursement Work?
There is no single universal 90837 reimbursement rate that applies to every provider or every claim.
Payment can vary according to factors such as:
- payer;
- Medicare versus commercial insurance;
- geographic locality;
- provider contract;
- place of service;
- participating-provider status;
- applicable fee schedule;
- telehealth rules; and
- claim-specific circumstances.
For Medicare, reimbursement is influenced by the Physician Fee Schedule methodology and geographic adjustments. Commercial insurers may use their own contracted rates and policies.
Therefore, practices should verify the applicable payer’s current fee schedule rather than relying on a reimbursement figure found in a general blog or online calculator.
A broader 90837 reimbursement rate review also belongs within revenue cycle management because payment posting, underpayment identification, claim follow-up, denials, and A/R performance can affect what a practice ultimately collects. Revline’s RCM service monitors these areas across the claim lifecycle.
Billing 90837 With Telehealth Services
Behavioral health services are frequently delivered through telehealth, but telehealth billing rules require special care.
Terms such as 90837 95 and 90837 GT appear frequently in billing searches because modifiers may be required to identify how a service was delivered.
However, practices should not assume that every payer uses the same telehealth modifier.
Modifier 95 is commonly associated with synchronous telehealth services, while GT continues to appear in certain payer or institutional billing contexts. The exact modifier, place-of-service code, and coverage requirements can depend on the payer and current policy.
For this reason, billing staff should verify:
- whether the payer covers the psychotherapy service through telehealth;
- which modifier is required;
- which place-of-service code should be reported;
- whether audio-only or video requirements apply; and
- whether additional payer-specific behavioral health rules exist.
Never copy a modifier from a previous claim simply because that claim was paid. Payer policies and claim circumstances can differ.
Can 90837 Be Billed With an E/M Service?
This is an area where code selection becomes especially important.
CMS distinguishes standalone psychotherapy codes from psychotherapy add-on codes used when psychotherapy is performed with an Evaluation and Management service.
For psychotherapy provided alongside an E/M service, CMS guidance identifies add-on codes such as 90833, 90836, and 90838 depending on psychotherapy time. It also requires the E/M and psychotherapy portions to be separately identifiable in the documentation.
Therefore, a provider should not automatically submit standalone 90837 plus an E/M code without determining whether the applicable coding rules instead require an appropriate psychotherapy add-on code.
Common 90837 Billing Errors
Even when the psychotherapy service itself is appropriate, billing errors can occur elsewhere in the claim workflow.
One common problem is selecting the code according to the appointment schedule rather than documented psychotherapy time. Another is failing to document sufficient time information. Recent Medicare contractor guidance specifically highlighted missing face-to-face time documentation as an area of concern for psychotherapy claims.
Other potential issues include using an incorrect diagnosis code, applying an inappropriate telehealth modifier, reporting the wrong place of service, submitting incomplete documentation, or failing to follow a payer’s specific billing policy.
A structured claim-review process can catch some of these issues before submission and help prevent avoidable rework.
Why Accurate Psychotherapy Coding Matters
Behavioral health billing involves several connected elements: diagnosis coding, procedure coding, psychotherapy time, modifiers, payer rules, documentation, claim submission, and payment processing.
If one element does not match the others, a technically valid service may still encounter a claim issue.
Practices should therefore think beyond individual CPT codes. Coding accuracy should connect with claim preparation, payer verification, denial analysis, and accounts receivable follow-up.
This is also why 90837 session length documentation is relevant to medical coding rather than just scheduling. Revline’s coding workflow reviews provider documentation and prepares coded encounters for billing and claim readiness.
Likewise, recurring payer issues should be evaluated as part of the larger revenue cycle instead of corrected one claim at a time.
Best Practices for Billing 90837
Practices can build a more reliable process by ensuring that the psychotherapy time documented in the clinical record supports the selected code.
The provider’s note, diagnosis, treatment information, procedure code, modifiers, place of service, and claim details should tell a consistent story.
Billing teams should also maintain payer-specific references rather than applying one insurer’s policy to every plan. This is especially important for telehealth and reimbursement rules.
Finally, providers and billing staff should review coding guidance periodically. CPT, Medicare, telehealth, and individual payer policies can change over time.
For practices managing large volumes of behavioral health claims, connecting coding validation with 90837 CPT code time range monitoring can help identify recurring workflow issues before they affect a larger number of claims.
Conclusion
Correct psychotherapy billing requires alignment between the service provided, documented time, clinical record, procedure code, modifiers, payer requirements, and claim submission process. The most important timing point for CPT code 90837 is that CMS guidance places the code at 53 minutes or more of psychotherapy—not simply any appointment scheduled for an hour.
Practices should also verify current telehealth and reimbursement policies for each payer rather than relying on one universal rule. Revline Medical Solutions supports medical coding, billing, and revenue cycle workflows that connect documentation review with cleaner claim preparation and ongoing reimbursement management. Its website positions coding, claim submission, payment posting, denial handling, and A/R follow-up as connected parts of the revenue cycle.-
Frequently Asked Questions
1. What is 90837 used for?
90837 is used to report a longer individual psychotherapy encounter. Under CMS time guidance, the psychotherapy portion must reach at least 53 minutes. The patient’s documentation and applicable payer requirements should also support the reported service.
2. What is the minimum time required for 90837?
The minimum threshold under CMS guidance is 53 minutes of psychotherapy. Sessions lasting 38–52 minutes fall within the time range associated with 90834.
3. Does a 60-minute appointment automatically qualify for 90837?
No. Billing is based on the qualifying psychotherapy service rather than simply the calendar appointment length. If only 50 minutes of psychotherapy occurred, for example, that does not meet the 53-minute threshold.
4. What is the difference between 90834 and 90837?
The main time distinction is that 90834 represents 38–52 minutes of psychotherapy under CMS guidance, while 90837 applies from 53 minutes onward. Documentation and payer requirements must still support whichever code is selected.
5. What should providers document for 90837?
Documentation should accurately support the psychotherapy service, relevant diagnosis, practitioner involvement, and required time. CMS allows time to be documented using total time or start-and-stop times when time is relevant to coding and payment.
6. Can 90837 be used for telehealth?
Psychotherapy may be covered through telehealth when applicable requirements are satisfied. However, modifier, place-of-service, technology, and coverage rules can differ by payer. Providers should check current Medicare or individual payer policies before submitting the claim.
7. What does modifier 95 mean with 90837?
Modifier 95 is commonly used to identify certain synchronous telemedicine services. Whether it should accompany a particular psychotherapy claim depends on the payer, place of service, delivery method, and current billing policy, so it should not be added automatically.
8. Is GT the same as modifier 95?
No. Both have been used in telehealth billing contexts, but they are not interchangeable in every circumstance. The payer’s current billing instructions should determine whether GT, 95, another modifier, or no telehealth modifier is appropriate.
9. What determines 90837 reimbursement?
The amount depends on the payer’s fee schedule or provider contract, geographic area, place of service, provider participation, claim details, and other reimbursement policies. There is no single payment amount that applies to every 90837 claim.
10. How can practices reduce 90837 billing errors?
Practices should document actual psychotherapy time, validate the diagnosis and procedure code, confirm payer-specific requirements, use appropriate telehealth information where applicable, and review claims before submission. A consistent coding-and-billing workflow can help reduce preventable errors and rework.