What Is an Insurance Claim? (How It Works, Timelines, and Rights)

What Is an Insurance Claim?

An insurance claim is a formal request you submit to your insurance company asking it to pay for a covered loss or expense. When you receive medical care, experience property damage, or suffer another covered event, you file a claim to trigger your policy benefits. The insurer then reviews the claim, determines whether it is covered under your policy, and either pays the claim, partially pays it, or denies it.

For health insurance, a claim is typically filed when you receive medical services. Your provider usually submits the claim directly to your insurer on your behalf, though you can also file claims yourself for out-of-network care or reimbursement situations.

How Does the Insurance Claims Process Work?

The claims process generally follows these steps:

1. You receive services or incur a covered loss. A doctor visit, surgery, prescription fill, or other covered event triggers the claims process.

2. A claim is submitted. Your healthcare provider electronically submits a claim to your insurer using standardized billing codes (CPT, ICD-10, HCPCS). For self-filed claims, you complete a claim form and attach documentation.

3. The insurer receives and logs the claim. Your insurer assigns the claim a tracking number and begins the adjudication process — the formal review of whether and how much to pay.

4. Claims adjudication occurs. The insurer checks the claim against your policy terms, verifies coverage, applies your deductible and coinsurance, checks for coding errors, and determines the payment amount.

5. The insurer issues a determination. You receive an EOB)" class="auto-link">Explanation of Benefits (EOB) detailing what was billed, what was covered, what the insurer paid, and what you owe. If the claim is denied, the EOB states the denial reason.

6. Payment or denial is issued. If approved, the insurer pays your provider directly or reimburses you. If denied, you have the right to appeal.

What Are the Types of Insurance Claims?

• Clean claims: Claims submitted with no errors that are processed without additional information.
• Dirty claims: Claims with missing information, coding errors, or inconsistencies that require follow-up.
• Prior Authorization Denied: How to Appeal" class="auto-link">Prior authorization claims: Claims for services that required advance approval from the insurer.
• Retrospective claims: Claims for emergency services that could not wait for pre-approval.
• Reimbursement claims: Claims you file yourself after paying out of pocket.

What Are the Legal Timelines for Insurance Claims?

Federal and state laws establish timelines insurers must follow:

For health insurance (ACA-compliant plans):

• Urgent care claims: Decision within 72 hours
• Non-urgent pre-service claims: Decision within 15 days (extendable once by 15 days)
• Post-service claims: Decision within 30 days (extendable once by 15 days)
• Concurrent care claims: Decision no later than the end of the current treatment period

For Medicare Advantage:

• Routine claims: 30 days for payment after receipt
• Urgent claims: 72 hours

For ERISA employer-sponsored plans:

• Urgent claims: 72 hours
• Pre-service claims: 15 days
• Post-service claims: 30 days

If an insurer misses these deadlines, the claim may be deemed approved by default under some state laws, and you may have grounds for a bad faith complaint.

What Are Your Rights When a Claim Is Filed?

You have legally protected rights in the claims process:

• Right to receive an EOB: You must receive a written explanation of any claim decision, including denial reasons.
• Right to appeal: Under the ACA and ERISA, you have the right to internal and external appeal of any denied claim.
• Right to an independent review: If your internal appeal is denied, you can request review by an IROs) Explained" class="auto-link">Independent Review Organization (IRO).
• Right to request your claims file: You can request all documents related to your claim and the decision.
• Right to timely decisions: Insurers must meet federal and state deadlines or face penalties.
• Right to plain language explanations: Denial notices must state the reason for denial in plain language and include instructions for appealing.

What Happens If Your Claim Is Denied?

A denial is not final. You have the right to:

1. Request a written explanation of the denial reason
2. File an internal appeal with your insurer
3. Request an independent External Independent Review: Complete Guide" class="auto-link">external review
4. File a complaint with your state insurance commissioner
5. Pursue legal action for wrongful denial in some circumstances

Common denial reasons include: lack of medical necessity, services not covered under your plan, missing prior authorization, out-of-network provider, coding errors, and coordination of benefits issues.

What Should You Do After Filing a Claim?

• Keep copies of all paperwork, including the claim form, EOB, and any correspondence
• Track the claim number assigned by your insurer
• Follow up if you have not received a decision within the required timeframe
• Review your EOB carefully and compare it to your provider's bill
• Contact your provider's billing department if you spot discrepancies

Fight Back With ClaimBack

If your insurance claim was denied or underpaid, you do not have to accept that decision. ClaimBack helps you build a professional, evidence-backed appeal that gives you the best chance of getting the coverage you paid for.

Start your appeal at https://claimback.app/appeal.

Related Reading

• What Is a Claim Denial? Types, Reasons, and What to Do
• What Is the Insurance Claim Appeal Process? Step-by-Step
• Common Reasons Insurance Claims Are Denied