Network Adequacy: Your Rights When Your Insurer's Network Is Insufficient

One of the most frustrating — and often unlawful — insurance situations is when your plan technically covers a type of service but has no qualified in-network provider available to deliver it. The insurer's network exists on paper; the care you need is effectively out of reach. This is a network adequacy problem, and you have legal rights to address it.

What Is Network Adequacy?

Network adequacy refers to whether an insurance plan's provider network has sufficient numbers and types of providers to give enrollees timely access to covered services without having to travel unreasonable distances or wait unreasonable amounts of time.

Federal and state law set minimum network adequacy standards. When a plan's network falls short of those standards, insurers must allow members to access out-of-network care — typically at in-network cost-sharing levels. This is called an out-of-network exception or a network inadequacy exception.

Federal Network Adequacy Standards (ACA)

For plans sold through the ACA Marketplace, CMS has established network adequacy requirements. These include requirements that networks include:

• Sufficient numbers of primary care providers
• Sufficient specialists across key specialties
• Adequate hospital and facility access
• Providers within reasonable time and distance standards

CMS updates network adequacy standards for Marketplace plans through annual guidance and enhanced requirements, particularly following the 2022 and 2024 updates to Marketplace network adequacy rules.

For Medicare Advantage plans, CMS has specific network adequacy requirements by specialty and geography, with detailed time and distance standards. If a Medicare Advantage plan lacks an in-network provider for your needed specialty, the plan must cover out-of-network care at the in-network cost-sharing rate.

State Network Adequacy Laws

Every state has enacted its own network adequacy standards. Most state laws include:

• Time and distance standards: Maximum travel time or mileage to reach an in-network primary care provider, specialist, hospital, or other service. These vary but common standards include 30-minute or 30-mile access for primary care and 60-minute or 60-mile access for specialists in urban areas (longer for rural areas).
• Appointment wait time standards: Maximum time to wait for a routine appointment, urgent appointment, or specialty consultation.
• Adequacy reviews: State insurance departments review network adequacy when plans are submitted for certification and upon complaint.

Some states — including California, New York, Texas, Illinois, and Virginia — have particularly strong network adequacy laws with enforceable standards and clear exception processes.

When Do You Have an Inadequacy Claim?

You may have a network inadequacy situation when:

• No in-network provider of the required specialty exists in your plan's network within the state or service area
• Wait time for the in-network provider is unreasonably long — for example, a 6-month wait for a neurologist when your condition requires prompt evaluation
• Geographic distance to the nearest in-network provider requires unreasonable travel
• No in-network provider has the expertise for your specific condition (e.g., a rare cancer, a complex procedure requiring a specialized surgeon)
• Your in-network provider stopped accepting your insurance mid-treatment and the plan has no comparable replacement

How to Request an Out-of-Network Exception Due to Network Inadequacy

Step 1: Establish that the network is inadequate for your situation. Document your attempts to find in-network care:

• Use the insurer's provider directory to search for in-network specialists
• Call 3–5 of the listed providers to verify they are accepting new patients and are truly in-network
• Document the wait times offered
• Note the distance to each provider

Many provider directories contain errors — providers listed as in-network who are not actually accepting new patients or who have left the network. This documentation is essential.

Step 2: Obtain a physician referral. Your primary care physician or treating physician should provide a letter stating:

• The specialty or type of provider required for your treatment
• That the specific in-network providers are unavailable, too distant, or have inadequate wait times for your medical situation
• The specific out-of-network provider recommended and why

Step 3: Submit a written exception request. Send a written request to the insurer's member services department citing:

• The specific in-network providers you contacted and their inadequacy (unavailability, wait times, distance)
• Your physician's referral and statement of need
• The applicable federal or state network adequacy standard
• Request that the out-of-network provider be covered at in-network rates

Template language:

"I am requesting an out-of-network exception based on network inadequacy. I have been unable to locate an in-network [specialty] within a reasonable distance/wait time for my condition. I contacted [provider 1, provider 2, provider 3] and was unable to obtain timely access. My treating physician, Dr. [Name], has referred me to [out-of-network provider] and has documented that in-network alternatives are clinically inadequate for my specific condition. Per [state law / CMS network adequacy standards / ACA 45 CFR Part 156], I request that [out-of-network provider] be covered at in-network cost-sharing levels."

Step 4: Escalate to your state insurance department. If the insurer denies your network adequacy exception, file a complaint with your state insurance department. Most departments have network adequacy divisions that take these complaints seriously because they reflect on whether the plan should be certified in the state.

Step 5: Request an External Independent Review: Complete Guide" class="auto-link">external review. For ACA-regulated plans, a denial of a network inadequacy exception may be eligible for external review, particularly if the denial is based on a medical judgment about the appropriateness of the out-of-network provider.

For Emergencies: The No Surprises Act Provides Immediate Protection

For emergency care, the federal No Surprises Act eliminates out-of-network cost-sharing entirely. You cannot be required to pay more than in-network cost-sharing for emergency services, regardless of which hospital or ER provider you see. This is a separate protection from network adequacy, but it's relevant in the same situations.

Documenting the Provider Directory

Many network adequacy problems originate from inaccurate provider directories. If you find that a provider listed in the directory is not actually in-network (called a "ghost network"), report this to:

• The insurer's provider relations department in writing
• Your state insurance department
• The No Surprises Act complaint process at cms.gov

Ghost networks — directories listing providers who are not actually available — are a recognized problem that regulators are actively addressing.

Fight Back With ClaimBack

If your insurer denied a service because you needed to see an out-of-network provider when no in-network option existed, ClaimBack can help you draft a network inadequacy exception request or appeal that cites your specific rights under state and federal law.

Start your appeal at ClaimBack

Related Reading

• Common Reasons Insurance Claims Are Denied
• Internal vs. External Insurance Appeal
• Insurance Ombudsman Guide