What to do after a health insurance claim denial

Find the notice that says the claim or service was denied. An explanation of benefits (EOB) describes how a claim was processed; it is usually not a bill. Keep both documents, since the EOB, bill, and denial letter may each contain useful details.

Write down or mark the parts that identify:

• the reason for the denial and any denial or service codes;
• the claim number, service date, provider, and amount in question;
• the plan rule, policy section, or records the notice refers to; and
• the appeal instructions, contact details, and dates shown in the notice.

If the reason is unclear, call the member-services number on your insurance card. Ask the representative to explain the reason in plain language, identify the plan provision used, and tell you where to get the current appeal instructions. Keep a note of the date, department, and what you were told.

Look at the denial notice, your current plan documents, and the plan or government website named in the notice. Check the last day to appeal, the form to use, where to send it, and whether the plan accepts an online, mail, or fax submission.

Appeal steps and timelines can differ based on the coverage and the type of denial. Employer coverage, individual or Marketplace coverage, public programs, and other plans may use different processes. Do not use a deadline from a general article in place of the one that applies to your situation.

If a deadline is close or the situation is urgent, contact the plan promptly and ask what options are available, including whether an expedited review or a different sequence applies. Ask for the answer and submission method in writing when possible.

A focused appeal is easier to review. Gather the records that help explain the issue the plan identified. Depending on the denial, that might include:

• the denial notice, EOB, and related bill or claim information;
• relevant medical records or a provider’s explanation of the service;
• a referral or prior-authorization record, if it relates to the denial;
• corrected billing information, if the issue may be a coding or billing error;
• the plan policy or coverage document cited in the notice; and
• copies of earlier messages, forms, and proof of when you sent them.

Ask the provider’s office for records or a supporting statement that responds to the plan’s reason. Only send information requested by the applicable instructions or information that helps explain your appeal. Keep a complete copy of what you submit.

For a focused record-by-record checklist, see CairnClaim’s guide to gathering records for an appeal.

An internal appeal asks the health plan to review its decision through its own process. Follow the plan’s form and submission instructions. In your explanation, identify the claim, say what you are asking the plan to reconsider, and connect the denial reason to the records you are including.

Before sending, check that the packet includes the required form, your explanation, and the supporting documents. Save a copy and proof of submission, then note when the plan says it expects to respond. If the decision remains a denial, read the next-step notice carefully; it may explain whether another review route is available.

The free CairnClaim three-question orientation can offer an educational path and document prompts. It does not submit an appeal or contact the plan for you.

External review is a review outside the health plan. In some processes, an independent reviewer looks at a plan’s denial. It may be a next step after an internal appeal, but the order is not the same for every situation. Some urgent cases or other exceptions may allow a different sequence.

Eligibility, deadlines, forms, and review rules vary by plan and state. External review is not available for every plan or denial, and it does not promise that a claim will be covered or that the decision will change. Check the rights notice attached to the denial and your current plan documents. Ask the plan administrator or insurer which review process applies to your coverage and where to find the current official instructions.

For state-regulated coverage, your state insurance department may explain the state process. Employer plans may have a different regulator or process; the Department of Labor’s Employee Benefits Security Administration (EBSA) can provide information about many employer health plans. Medicare, Medicaid, and other public coverage can have separate appeal instructions, so use the official agency or program named in your notice.

For a closer overview, read CairnClaim’s guide to external review. It is general education; your notice, plan materials, and current official sources determine what applies to you.