
Introduction
If you or a relative has pursued mental health treatment in the U.S., you’re familiar with the irritation when the insurance refuses to cover it. A denial of mental health treatment involves your health insurance declining or refusing to cover mental health treatment such as therapy, medications, inpatient or outpatient treatment, or substance abuse services. Denials may occur for a variety of reasons: the insurer may claim the treatment is not “medically necessary,” it’s experimental, out of network, or because of coverage exclusions.
This article will educate you regarding the way that denial appeals for psychiatric treatment proceed, your rights, your appeal process, and how you can improve your chances of success in overturning a denial.
What Is a Denial Claim for Mental Health Treatment
A mental health treatment denial claim occurs when:
- Your insurance policy denied your claim for services for a mental health condition (counseling, psychiatric medication, substance abuse treatment, inpatient service, or therapy).
- There is denial based on the reason such as “not medically necessary,” “experimental treatment,” “out of network provider,” preauthorization has not been provided, or because of benefit limitation.
- Your insurance will have no coverage for your treatment or your practitioner.
Prevalent Denial for Treatment Reasons

- Medical necessity: The insurance firm claims the provider cannot demonstrate that the treatment is “necessary” by their criteria.
- Pre-authorization problems: Pre-authorisation for the treatment was needed, but the application wasn’t filledout or wasn’t approved.
- Experimental/investigative treatment: The insurer deems the suggested treatment experimental.
- Limitazioni del network: Il fornitore non è presente nella rete appro.
- Limit of benefit or benefit coverage: The plan’s limit for substance use disorder counseling, inpatient utilization, or mental health sessions has been met.
Legal Rights & Regulations
Mental Health Parity and Addiction Equity Act (MHPAEA)
- The MHPAEA is a federal statute that obliges the health plans to have the same rules (financial requirements, exclusions for treatment) for their surgical and medical benefits and their mental health/substance use disorder (MH/SUD) benefits.
- This would also entail that if your insurance has no restriction for physical therapy visits, it shouldn’t have a restriction for psychiatric or mental health therapy.
State Laws & Regulations
- Some states have further requirements that are sometimes managed by state insurance departments or commissioners. Most states have requirements for plans to respond quickly to appeals of denials of behavioral health (mental health + substance use) treatment.
- State laws may also enforce external review options if internal appeals fail.
How the Insurance Denial Process Works
1. Filing of a Claim / Application
You or your carrier will request a treatment plan for psychotherapy sessions, or a request for prescription medication (occasionally a prior authorization) to the insurance carrier.
2. Insurer’s Prior or Pre-Treatment Authorization Review
The insurer examines the request for such issues as medical necessity, network status of the provider, or whether the treatment is plan criteria. This is a utilization review.
3. Denial Issued
If the review is denied, the insurance company issues a denial letter or Explanation of Benefits (EOB) describing why the claim was denied, what evidence the insurance company considered, and how you may appeal.
4. Internal Appeal
You submit the internal appeal within a time limitation (usually 180 days) by handing in further paperwork, such as the doctors’ letters, histories, etc.
5. External Review / External Appeal
If the appeal is denied internally, most states and the federal law (in the case of some plans) permit you to appeal to a third-party independent for a final ruling.
Timelines & Deadline
- Internal appeal deadline: Most plans mandate that internal appeals be submitted in writing within 180 days of denial.
- Response time from insurer:
- For pre-service denials (services not yet provided/pending), the responses are generally expected within 30 days.
- For post-service denial (services already provided), within 60 days.
- In the event that treatment is imminent, the time may be significantly shorter (e.g., 24–72 hours) for expedited assessments.
- Date for external review: Usually, you have to request an external review within 4 months of getting the final internal denial.
How to File an Appeal (Internal and External)
Internal Appeal Steps
To challenge a mental health treatment denial claim:

- Read the denial notice / EOB closely. Identify the reason given: medical necessity, experimental, network, etc.
- Present the psychiatric/therapist’s treatment plans, clinical notes, letters explaining why the proposed treatment is required, and the psychiatrist’s/therapist’s signed and dated statement.
- File your appeal in writing. Fill out any forms the insurance company provides. Explain the treatment in particular that you are asking for and why it meets the insurer’s criteria. Make a reference to relevant medical guidelines.
- Save all documents: doctor’s letters, dates/times of conversation, emails, letters.
External Review Process

- Once the internal appeal is rejected, you are entitled to the external review. This is a review done by a person who has no connection with the insurer.
- Adhere to your state’s or the plan’s guidelines for making the request for the external review. Submit any documents utilized in previous steps.
- The external review’s determination is often conclusive for the insurance firm.
What You Can Do to Enhance the Effectiveness of Claiming
- Read your policy’s definitions. If your policy defines “medically necessary” when it covers it, be certain that your appeal defines why your treatment does.
- Engage your carrier: ask the treating mental health expert to compose a letter of necessity for treatment.
- Written guidelines supporting the treatment. For instance, peer-reviewed journals, standard of treatment guidelines, or professional guidelines (APA, etc.).
- Verify that all required paperwork has been completed properly and the network of providers has been activated when necessary.
- Expedited review if delay in treatment results in harm or deterioration.
What to Do If You’re Denied Care: Steps You Can Follow
- Reach your health plan right away in writing and by phone. Request “appeals department,” “Behavioral Health Appeals,” or “Utilization Review” specifically.
- Request the insurer’s policy statement that applies to the insurance for mental health and the requirements for medical necessity.
- Appeal immediately in writing to the office of the insurer.
- If internal appeal is denied, seek external review.
- Sue your state insurance commissioner if you think your rights under MHPAEA or state parity legislation are being denied.
- Discuss with a lawyer or advocacy organizations (Mental Health America, NAMI) if the appeals are denied.
The Signs of Denial & What It Means for You
- Late treatment or cancellation, worsening of the symptoms, or risk to health.
- Payment obligation: You will be required to shoulder considerable out-of-pocket expenses if the treatment is not reimbursed.
- Emotional insecurity and stress.
Examples/ Case Studies (User Scenarios)
- A patient is denied outpatient therapy because the policy covers 20 sessions/year, but the doctor claims 30 are medically necessary. They appeal in writing and include a treatment plan and aprovider letter documenting the criteria for medical necessity; the appeal is successful.
- PLAN denies the member’s appeal for telehealth psychotherapy because the plan only covers office visits. They appeal, citing parity law and evidence that telehealth is an accepted standard of care; external review upholds their appeal.
Resources & Support

- National Alliance on Mental Illness (NAMI) Appeal of denials for psychiatric conditions and rights under health insurance.
- U.S. Department of Labor (DOL) for plans that are governed by ERISA. External review rights.
- State Insurance Commissioner Department of Insurance for your state regulation and filing of complaints.
- Employee Benefits Security Administration (EBSA) for employee benefit/retirement plans.
Conclusion
A denial of benefits for mental health services may be a significant hurdle to receiving the services that you deserve, but you have rights. Being aware of insurance denial, understanding your medically necessary needs, using your appeal process both in and out of policy, and accessing the mental health parity law are enormous aids to having a denial overturned. Act soon, document thoroughly, and perhaps seek help if you are in need.
Frequently Asked Questions (FAQs)
“Medically necessary” refers to whether the insurer believes the requested mental health treatment meets the internal criteria of the insurer for necessity. Insurers may deny claims if they believe that treatments are either not essential, excessive, or not supported with clinical documentation. This is one of the most common reasons for denying mental health treatment.
Yes. Even in situations when a psychiatrist or therapist recommends treatment, an insurance company may still deny coverage. Often, insurers rely on their own utilization review standards, rather than relying solely on a recommendation from the provider. That is why it will be important, if filing an appeal, to submit solid clinical notes with a letter of medical necessity.
Key documents will also include the denial letter or Explanation of Benefits, treatment plans, clinical notes, letters from your psychiatrist or therapist, and any medical guidelines supporting the treatment. Maintaining copies of everything sent and received between you and the insurance provider is also crucial in the process of appeal.
Yes, you can request an expedited review if delaying treatment would significantly harm your mental health or make your condition worse. Expedited appeals are considered to be far quicker than regular ones, sometimes within 24 to 72 hours, depending on the urgency and the insurance plan.
In general, if the external appeal is denied, the insurance company is not obliged to cover the service. You might then want to file a complaint with your state insurance commissioner or seek additional help from an attorney or mental health advocacy groups like NAMI or Mental Health America.