What Is a Certificate of Coverage (and Summary Plan Description)?

Most people never read their health insurance documents — until they get a claim denied. When that happens, the first document you need is your Certificate of Coverage (COC) or, for employer plans, the Summary Plan Description (SPD). These are the official rulebooks that govern your coverage.

What Is a Certificate of Coverage?

A Certificate of Coverage (also called a Certificate of Insurance, Evidence of Coverage, or Member Certificate depending on the insurer and plan type) is the comprehensive legal document that describes all the terms, conditions, benefits, exclusions, and limitations of your health insurance plan.

It is different from the Summary of Benefits and Coverage (SBC) — a standardized, shorter 4-8 page document required by the ACA that highlights key features. The COC is the full, legally binding contract.

For employer-sponsored plans governed by ERISA, the equivalent document is the Summary Plan Description (SPD). For fully insured employer plans, you may receive both an SPD (from the employer) and a COC (from the insurer).

What's in a Certificate of Coverage?

A typical COC includes:

• Definitions: How terms like "medical necessity," "emergency," "experimental," and "dependent" are defined for your plan
• Covered benefits: Detailed description of each covered service category (preventive care, inpatient, outpatient, mental health, prescription drugs, etc.)
• Exclusions and limitations: Services the plan does not cover, or covers only under specific conditions
• Cost-sharing: Deductibles, copays, coinsurance, and out-of-pocket maximums for various service categories
• Prior Authorization Denied: How to Appeal" class="auto-link">Prior authorization requirements: Which services require advance approval and the process for requesting it
• Network requirements: In-network vs. out-of-network coverage rules
• Appeals and grievances: How to challenge a denial, file a complaint, or request External Independent Review: Complete Guide" class="auto-link">external review
• Coordination of benefits: How the plan works with other coverage
• Termination and continuation: When and how coverage ends, COBRA rights, etc.

Why Your COC Is Critical for Appeals

When your claim is denied, the insurer must cite a specific policy provision or clinical criterion. Your COC (or SPD) tells you:

1. Exactly what the policy says about the denied service
2. Whether the exclusion is being applied correctly — insurers sometimes misinterpret or misapply their own language
3. What your rights are under the plan's appeals process
4. Definitions that govern the dispute — for example, how "medical necessity" is defined in your plan may be more favorable than how the reviewer applied it

How to Get Your COC

• Employer plans: Contact your HR department or benefits administrator. You are entitled to receive a copy of the SPD free of charge upon request.
• Individual/marketplace plans: Log in to your insurer's member portal. The COC is usually available under "Plan Documents" or "Policy Documents."
• Medicare Advantage: Request the Evidence of Coverage from your plan or download it from Medicare.gov.
• Medicaid: Contact your state Medicaid agency or managed care plan.

Under ERISA, plan administrators must provide SPD documents within 30 days of a written request. Failure to provide them can result in penalties.

COC vs. SBC vs. SPD: What's the Difference?

Fight Back With ClaimBack

Your certificate of coverage is your most powerful appeal tool. ClaimBack helps you locate the right policy language, identify when it's being misapplied, and build an appeal grounded in your actual plan terms.

Start your appeal at ClaimBack

Related Reading

• What Is Medical Necessity?
• Common Reasons Insurance Claims Are Denied
• How to Write an Insurance Appeal Letter