Glossary

Claim number

The reference code an insurer assigns when it opens a file on your loss, used to track the adjuster's notes, estimates, payments and correspondence.

Also called: claim ID, claim reference number, claim file number

A claim number is the identifier an insurer assigns when it opens a file on your loss, usually within minutes of the first report. It appears on the confirmation email or text, on estimates and letters, and on payment checks and explanation-of-payment statements. The format varies by company.

Everything about the loss hangs on that number: the adjuster's inspection notes, photographs, the estimate, the payment history, and every call and email. Quote it each time you contact the insurer. Give it to your mortgage servicer, your contractor and any mitigation company as well, so their invoices, inspections and paperwork attach to the right file.

A new loss gets a new claim number. Additional damage from the same event normally stays under the original number as a supplemental claim. If a closed claim is revived, ask whether it keeps the old number or receives a new one, and write down the answer.

Keep the number somewhere safer than your email inbox alone. A simple claim log, with the date, the representative's name and what was said on each contact, makes it easy to follow up. The guides on how to file a homeowners claim and reopening a closed claim cover what happens next.

Last reviewed October 10, 2026

In the index now

Related terms

First notice of loss The first report you or your agent makes to the insurer that damage has occurred, which opens the file and starts the insurer's response deadlines. Adjuster The person who investigates a reported loss, decides what the policy covers and how much it will pay, and negotiates the settlement. Supplemental claim A request for more money on a loss you already reported, usually for damage found or costs incurred after the first estimate was written. Proof of loss A signed, sworn statement of what happened and what you are claiming, which most policies require within a set number of days.

Related guides

Claims staffing, outsourcing and layoffs Why insurers cut and outsource claims staff, what BLS data and recent reports show, how it can slow a claim, and what protects you when your adjuster changes. Disaster aid and insurance fraud schemes Fake FEMA inspectors, grant-fee callers, phony claim helpers and look-alike charities after a disaster, the rules that expose them, and where to report. The first 48 hours after damage to your home What to do in the first two days after a fire, leak, storm or break-in: safety, calling the insurer, stopping damage, documenting, and what to hold off on. How to file a homeowners insurance claim A step-by-step walk through a property claim, from the first call to the final check: what to document, what the insurer does next and which clocks are running. How to file a complaint with your state insurance department What a department of insurance complaint can and cannot do for a home claim, what to send, how long insurers have to answer, and what to do if the answer is no. Phishing scams that impersonate insurers How fake renewal notices, claim-payment texts and lender "insurance lapse" messages steal logins and money, how to spot them, and what to do if you clicked.

Related tools

Home insurance claim checklist Work through the steps of a homeowners claim in order, with extra steps for water, wind, fire or theft, and tick them off as you go.