Mental health billing doesn’t have to feel like a guessing game. When CPT codes like 90791 and 90834 appear on your claims, knowing exactly how and when to use them makes a real difference. 

These codes sit at the center of mental health evaluations and therapy sessions, yet small mistakes can lead to payment delays or denials. 

With the right approach, you can protect your revenue, reduce administrative stress, and maintain a steady workflow. 

In this article, Aspen Ridge Medical breaks down how 90791 and 90834 work, where each one applies, and how accurate coding supports both your practice operations and patient care.

What Are Mental Health CPT Codes and Why Do They Matter for Mental Health Billing?

Mental health CPT codes are standardized codes used to describe services provided by behavioral health professionals. 

CPT stands for Current Procedural Terminology, a coding system developed by the American Medical Association to help insurance payers understand the healthcare services that were delivered. 

These codes convey the type of care provided, the duration of the service, and whether it adheres to coverage and payment guidelines.

Insurance companies rely on mental health CPT codes to process claims accurately and efficiently. 

When you submit claims with the correct codes, payers can review and pay them more efficiently, which helps reduce delays and follow-up requests. 

Incorrect or unclear coding often results in denials, payment reductions, or increased administrative work.

Accurate use of mental health CPT codes also supports compliance. Each payer sets specific documentation, time, and medical necessity requirements tied to each code. Using the wrong code can trigger audits or claim rejections, even when care was appropriate. 

CPT codes establish a shared language between your practice and insurance carriers, facilitating cleaner claims and more predictable reimbursement.

For many providers, coding challenges arise from changes in payer rules or inadequate guidance. Understanding how CPT codes work helps you protect your revenue, reduce rework for your billing team, and keep your focus on patient care.

What Do 90791 and 90834 Mean?

CPT codes 90791 and 90834 serve different purposes, even though they’re often confused.

The 90791 CPT Code Is Used For Psychiatric Evaluation. 

You use it for an initial diagnostic assessment that doesn’t include medical services. 

This code covers a comprehensive review of the patient’s mental health history, current symptoms, and treatment needs. It’s typically billed at the start of care, when you’re gathering information and forming a diagnosis. 

The 90791 CPT code doesn’t include psychotherapy, even if the session feels therapeutic in nature. Its purpose is evaluation and care planning.

The 90834 CPT Code Is Used For Psychotherapy. 

It represents a 45-minute psychotherapy session with a patient. 

You use this code for ongoing therapy after the initial evaluation has been completed. The 90834 CPT code requires documentation that supports the time spent and the therapeutic techniques used. 

Many payers have strict rules around time ranges, so accurate session tracking is essential.

Knowing when to use 90791 and 90834 helps reduce common billing issues. Billing a psychiatric evaluation code for a therapy session can result in a denial. 

Using a psychotherapy code without the right documentation can delay payment. Clear separation of these services supports smoother claims processing.

Other Mental Health CPT Codes You May Encounter

In addition to 90791 and 90834, several other mental health CPT codes may appear in behavioral health billing, depending on the type and length of service provided.

The 90837 CPT code is used for extended individual psychotherapy sessions that typically last about 60 minutes. 

This code is often applied in more complex treatment situations and usually requires strong medical necessity documentation due to higher reimbursement.

The 90832 CPT code covers shorter individual psychotherapy sessions, generally lasting 20 to 30 minutes. It’s commonly used for follow-up care or maintenance visits when a patient doesn’t need extended session time.

Group therapy services are billed using the CPT code 90853. This code applies to sessions with multiple patients and is often used in structured programs, such as substance use treatment or skills-based therapy groups.

In pediatric and integrated care settings, the 96110 CPT code may be used for developmental and behavioral screenings. These screenings help identify potential concerns early and support the provision of appropriate referrals or next steps in care.

FAQs

Q: Can you bill 90791 and 90834 for the same session?

A: In most cases, these codes aren’t billed together for the same patient visit or session. 

The 90791 CPT code is intended for evaluation purposes only and doesn’t include psychotherapy services. 

The 90834 CPT code is reserved for therapy sessions provided after the evaluation phase.

Q: Why are mental health CPT codes important for reimbursement?

A: Mental health CPT codes inform insurance payers about the specific service provided and whether it meets coverage requirements. 

Using the correct code helps reduce claim denials, shortens payment timelines, and limits requests for additional information.

Q: How can practices reduce CPT coding errors?

A: Practices can reduce errors by staying informed about payer guidelines, maintaining clear and accurate documentation, and thoroughly reviewing claims before submission to ensure accuracy. 

Working with a billing partner like Aspen Ridge Medical can also help support accuracy and consistency.

How Aspen Ridge Medical Helps Reduce Coding Errors and Denials

Accurate use of CPT codes supports both reliable reimbursement and quality patient care. 

At Aspen Ridge Medical, we closely follow these CPT coding standards because we understand the significant impact that accurate billing has on the health of your practice. 

We also recognize that there are many options when it comes to outsourcing billing services. That is why we focus on providing dependable software, proven processes, and a knowledgeable billing team that understands behavioral and mental health care. 

Our approach is built around responsive support and practical solutions that reduce administrative strain. 

Contact us today to learn how we can help keep your billing on track and your practice financially strong.
Disclaimer: The content provided by Aspen Ridge Medical is intended for informational purposes only and does not constitute legal, financial, or medical advice. While we strive to ensure the accuracy and reliability of the information, Aspen Ridge Medical does not guarantee its completeness, timeliness, or applicability to specific circumstances. Users should consult directly with qualified professionals for specific concerns.

In 2025, therapy covered by insurance is shaping how you care for patients and manage your practice. 

The demand for mental health services continues to grow, and both public and private insurers are expanding their coverage to keep pace. 

Even so, payer rules, benefit limits, and billing requirements continue to change. Staying current can take time and attention away from the work that matters most.

Aspen Ridge Medical collaborates with behavioral health providers to streamline insurance billing and alleviate administrative burdens. 

Our blog post explains what therapy coverage looks like in 2025 as we transition into 2026, and we review the top insurance providers you’re likely to work with. 

What to Look for When Choosing a Health Insurance Plan for Therapy

When reviewing health insurance plans that include therapy services, the details matter. 

Even when therapy is listed as a benefit, coverage rules can vary widely. 

As a provider, knowing what to watch for helps you set expectations and submit cleaner claims.

Key factors to review include:

• Network participation requirements: Many plans only reimburse therapy when in-network clinicians provide services. Out-of-network care often results in reduced payment or denied claims.
  
• Prior authorization rules: Some plans require approval before therapy begins or after a set number of sessions. Missing authorizations are a common cause of denied claims.
  
• Session limits and medical necessity reviews: Plans may review ongoing therapy after a certain number of visits. Strong clinical documentation supports continued coverage.
  
• Cost-sharing structure: Copays, coinsurance, and deductibles affect patient responsibility and collection workflows. Clear communication reduces confusion and delayed payments.
  
• Claims submission and appeal timelines: Filing limits, reconsideration processes, and electronic billing options differ by payer. A consistent approach helps manage these differences.

Understanding these elements helps you reduce billing issues and protect reimbursement across payer types.

Top Health Insurance Companies Offering Therapy Coverage

Several payers stand out in 2025 for offering therapy covered by insurance. Each comes with its own structure, rules, and billing considerations.

These include: 

Medicaid

As a major public payer, Medicaid plays a crucial role in mental health coverage. It covers individual and group therapy, psychological testing, and case management. 

Benefits are often managed through contracted plans, which means billing rules vary by region. Accurate credentialing and compliance with state-specific guidelines are critical for timely payment.

Medicare

Medicare covers medication management, depression screening, and other outpatient services through Part B, as well as inpatient services through Part A. 

Mental health services are reimbursed at parity with medical services, but documentation standards are strict. Follow their guidelines closely to avoid audits and denials.

Aetna CVS Health

Across individual, employer, and marketplace plans, Aetna CVS Health continues to expand its behavioral health benefits. 

These plans cover therapy services when you use in-network providers, which helps reduce patient costs and limit billing issues. 

Depending on the service, the plan may require prior authorization before care begins. When you verify eligibility and submit accurate claims, you reduce payment delays and support steady reimbursement.

BridgeSpan Health Company

BridgeSpan Health Company offers marketplace plans that include therapy coverage as part of essential health benefits. 

These plans offer a range of options, including virtual therapy and personalized care management. 

BridgeSpan plans often operate within defined networks, so using in-network providers and following referral rules helps maintain strong claim approval rates and reduces billing issues.

Imperial Health Plan

As part of its ACA (Affordable Care Act) compliant offerings, Imperial Health Plan includes mental health coverage insurance. 

These plans cover therapy services when medical necessity criteria are met. Proper provider enrollment and accurate plan identification are crucial for successful billing and timely reimbursement.

Regence Blue Cross Blue Shield of Utah

Regence Blue Cross Blue Shield of Utah provides comprehensive mental health benefits across multiple plan types. 

Therapy, virtual care, counseling, psychiatric care, and more are covered when delivered by participating providers. 

Regence plans often include clear behavioral health guidelines, which support consistent claims processing when followed correctly.

FAQs

Q: What does therapy covered by insurance usually include in 2025?

A: Therapy covered by insurance in 2025 often includes individual, group, and family therapy, along with psychiatric evaluations, telehealth visits, and medication management. 

Coverage depends on the plan, provider network, and medical necessity guidelines. 

Reviewing plan details helps you understand session limits, authorization rules, and reimbursement expectations.

Q: How does health insurance affect therapy billing for providers?

A: Health insurance plans place greater focus on documentation, medical necessity, and clean claims. 

Providers may see expanded benefits for therapy, but they also face stricter review processes. Staying aligned with payer guidelines helps reduce denials and payment delays.

Q: Why do therapy claims get denied even when coverage exists?

A: Claims may be denied due to missing authorizations, incorrect coding, provider credentialing issues, or the use of out-of-network providers. 

Even when mental health coverage is in place, billing errors can still prevent payment. Strong front-end verification and accurate claim submission reduce these risks.

Improve Reimbursement by Working With a Team Experienced With Leading Insurers

Aspen Ridge Medical brings deep experience in working with top insurance companies and behavioral health providers nationwide. 

You benefit from processes designed to reduce claim denials and low reimbursement rates before a patient is even admitted. That preparation helps protect your revenue and limits unnecessary follow-up.

When you work with us, you’re not passed from one contact to another. You work with the same dedicated professional who understands your practice, your payers, and your goals. 

You also gain access to modern billing software that provides real-time visibility into claims, payments, and performance data, paired with responsive customer service that values your time. 

If you need support that enhances your billing operations and allows you to focus on patient care, contact us to start the conversation today.

Disclaimer: The content provided by Aspen Ridge Medical is intended for informational purposes only and does not constitute legal, financial, or medical advice. While we strive to ensure the accuracy and reliability of the information, Aspen Ridge Medical does not guarantee its completeness, timeliness, or applicability to specific circumstances. Users should consult directly with qualified professionals for specific concerns.