A denied health claim: organize the next steps

A denied claim means the insurer or plan did not pay all or part of a request for benefits. It does not always mean the care is never covered or that you have no next step. The denial may involve eligibility, a coding or paperwork issue, network status, a plan exclusion, a missing prior authorization, or the plan’s view of medical necessity. Read the actual denial notice before deciding what to do.

If the service is upcoming, contact the treating provider promptly. If you already received care, compare the denial notice with the EOB and provider bill. Do not assume the amount shown on an EOB is a final bill; ask the provider whether it is waiting for an appeal or corrected claim.

Identify what was denied and why

Find the date of the decision, the service or medication, the claim number, and the reason code. A denial may apply to only one service line even when another part of the same visit was covered. Check whether the notice says:

• The service is excluded or not a covered benefit.
• Medical records or other documentation were missing.
• A referral or prior authorization was not obtained.
• The provider or facility was out-of-network.
• The service did not meet a plan definition or medical-necessity criterion.
• The claim was filed incorrectly or too late.
• The person was not enrolled or eligible on the date of service.

Ask the insurer for the specific plan provision, clinical guideline, or information used in its decision. If an internal clinical reviewer or expert was consulted, ask how to obtain the information allowed under your plan’s appeal process. The written notice should explain the reason and the steps and deadline for an appeal. Keep the envelope or electronic notice date so you can track the deadline.

Gather records that answer the stated reason

Build a file around the exact denial issue. Useful documents can include the order, chart notes, test results, prescription history, referral, authorization request, EOB, provider bill, and the plan’s coverage criteria. If the insurer says something is missing, ask the provider to send that specific item and confirm receipt. If the insurer used the wrong date, provider, code, or network, point to the document that corrects it.

For a medical-necessity denial, ask the treating clinician to explain why the service is needed, what alternatives were considered, and how the plan’s criteria apply. A general statement that treatment is “necessary” may not answer a specific criterion. For a drug denial, ask the prescriber to describe why the requested medicine is appropriate and whether covered alternatives were tried or are unsuitable.

File an internal appeal on time

Most health-plan denials include a process to ask the plan to reconsider. Follow the instructions in the notice, including where to send the appeal, what information to include, and the due date. Use the plan’s required form if it provides one. State clearly which decision you dispute, why you believe the plan applied the rule incorrectly, and what action you want the plan to take.

Submit copies, not original medical records. Include a short cover page listing the member name, ID, claim number, service date, and enclosed documents. Keep proof of delivery or portal submission and a complete copy of the appeal. If your provider will send clinical records separately, ask for the date sent and confirm that the plan received them.

If waiting for a standard review could seriously jeopardize health or the ability to regain maximum function, ask the plan and clinician whether an expedited appeal is available. Use the contact route in the denial notice. Do not postpone emergency care while you work through a coverage dispute.

Ask about external review if the denial remains

If the plan upholds its denial, you may have a right to an independent external review, depending on the type of plan and issue. An external reviewer is separate from the insurer. The notice should explain how to request review and any deadline. Some cases may qualify for an expedited external review or allow internal and external steps to proceed at the same time. Ask the state insurance department or consumer assistance program listed in the notice if you cannot tell which process applies.

CMS explains that consumers can appeal plan decisions and may have external review after an internal appeal. See CMS’s Appeals Denials guide and external appeals overview. These are general federal resources; the plan’s denial notice and applicable state rules control your specific process.

Separate the claim dispute from the provider bill

While an appeal is pending, ask the provider whether it can pause billing or collections. A provider’s billing policy may differ from the insurer’s appeal timeline. Request an itemized bill and compare it with the EOB. If the claim is later approved, the insurer may reprocess it and change the amount assigned to you; obtain an updated statement rather than relying on an older balance.

If the denial involves a possible surprise bill, do not assume an ordinary medical-necessity appeal is the only route. Check whether the No Surprises Act applies to the service and whether the bill is protected. CMS’s patient medical-bill rights page describes consumer resources. The protections are limited to defined situations and do not settle every out-of-network dispute.

Make a one-page appeal record

If you disagree with a denial, act on the notice rather than assuming it is final. A well-organized appeal addresses the reason the insurer gave, supports the request with relevant records, and follows the applicable deadline. This guide is general information, not a promise of coverage or legal advice.