Information checked: 2026-09-10 · Maintenance label: Annual and policy variable
Mental-health claim denials often use terms such as medical necessity, prior authorization, network, residential level of care, or treatment limits. Those words determine what evidence the appeal needs.
Federal parity rights help compare mental-health restrictions with medical and surgical restrictions, while the ordinary claims-and-appeals process is still the route for reversing the specific denial.
Key takeaway
A mental-health denial is not automatically a parity violation, but many plans must apply financial requirements and treatment limits no more restrictively than comparable medical and surgical benefits. Request the denial reason and criteria, gather the EOB and plan documents, file the plan's written internal appeal—often within 180 days—and preserve the right to external review.
Table of contents
- Start with the written reason
- What parity means
- Build the appeal packet
- Internal and external review
- Where to get help
- Frequently asked questions
- Summary
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Start with the written reason
Collect the explanation of benefits, denial letter, bill, relevant clinical records, plan Summary Plan Description, and Summary of Benefits and Coverage. Ask the plan to identify the precise reason, provision, medical-necessity guideline, and documents used.
The Department of Labor provides a model information request for limitations affecting mental-health and substance-use benefits. It does not itself start an appeal, so submit the plan's appeal separately.
What parity means
The Mental Health Parity and Addiction Equity Act generally prevents covered mental-health and substance-use benefits from facing financial requirements or treatment limitations that are more restrictive than comparable medical and surgical benefits.
Parity can involve copays, visit limits, prior authorization, network design, provider reimbursement, step requirements, or standards for admission and continued stay. A denial can still be valid for a reason applied comparably; do not claim a violation without the comparison.
Build the appeal packet
Include the member and claim numbers, service dates, requested remedy, denial reason, clinician letter, treatment history, medical records relevant to the criteria, and the plan language supporting coverage. Ask the clinician to address the actual denial standard rather than send a generic note.
The Department of Labor says a claimant usually has 180 days from the plan determination to submit an internal appeal, but the denial notice controls. Request relevant claim documents free of charge where federal rules apply.
Internal and external review
Submit through the required portal, mail, or fax and retain confirmation. For most plans, a response to a post-service internal appeal is generally due within 60 days. Urgent-care timeframes can be much shorter.
If internal appeals uphold the denial, many non-grandfathered plans allow external review for decisions involving medical judgment or parity application. Follow the final denial's instructions and deadline.
Where to get help
Employer-plan participants can contact the Department of Labor's Employee Benefits Security Administration. Marketplace and fully insured plan oversight may involve a state insurance department or consumer assistance program. Government and church plans can follow different channels.
If delay could seriously jeopardize health, ask the plan and clinician about expedited review and seek appropriate care; do not wait for a blog checklist in an emergency.
Frequently asked questions
Is every mental-health denial illegal?
No. A denial may be appealable without violating parity. The comparison with medical and surgical benefits matters.
What should I request from the plan?
The reason, plan provision, medical-necessity criteria, relevant records, and information about treatment limitations.
How long do I have?
Many plans allow 180 days for an internal appeal, but use the deadline on your denial notice.
Can my therapist help?
Yes. A clinician can supply records and a letter addressing the specific coverage criterion, subject to authorization rules.
Summary
A mental-health denial is not automatically a parity violation, but many plans must apply financial requirements and treatment limits no more restrictively than comparable medical and surgical benefits. Request the denial reason and criteria, gather the EOB and plan documents, file the plan's written internal appeal—often within 180 days—and preserve the right to external review.