CNA: Fax Numbers for Reporting a Claim

CNA runs two claim-reporting fax lines, one for small business policies and one for everything else. Neither appears on the Claims Center page, which is why most people never find them.

Sarah Mitchell

Published on

September 17, 2026

Last updated on

September 22, 2026

CNA accepts a new claim report by fax on 800-953-7389, alongside phone and email options.
Small business policies use a separate intake: fax 877-291-2019.
Both lines run 24 hours a day, 7 days a week.
Neither number is printed on CNA's Claims Center page; they live in CNA's own claim kit and wallet card documents.
In California workers' comp, injured employees have a separate Medical Access Assistant fax, 312-260-2101.

Who This Page Is For

Businesses and employers reporting a claim to CNA, not individual consumers. CNA is a commercial carrier, so the person faxing is usually an office manager or risk contact filing a first notice of loss. The California workers' comp line is aimed at injured employees needing help getting to a network doctor.

What fax number does CNA use for reporting a claim?

CNA operates two separate claim-reporting intakes, depending on the size of the policy. Standard lines report to 800-953-7389, part of the CNA ASAP intake. Small business policies report to 877-291-2019, a separate intake under FNOL CNA. Both are staffed around the clock. Neither appears on CNA's public Claims Center page, which lists only phone and online reporting, the fax numbers are published in CNA's own claim kit and wallet card documents instead.

Report a claim (standard lines, incl. workers' comp) (Insured business or its representative, Nationwide, 24/7): fax 800-953-7389 (CNA ASAP). Source: Workers' Compensation Claim Kit.
Report a claim (small business policies) (Insured business or its representative, Nationwide, 24/7): fax 877-291-2019 (FNOL CNA). Source: Small Business Claim Wallet Card.
Medical Access Assistant, network provider help (Injured employee, California workers' comp only): fax 312-260-2101. Source: California Medical Provider Network.

Fax number verified 2026-09-17.

Which route should I use?

Check whether the policy is written on CNA's small business book. If it is, use 877-291-2019.
If unsure, the wallet card issued with the policy tells you: 833-FNOL-CNA is a small business policy, 877-CNA-ASAP is not.
Report fast rather than perfectly. CNA's own guidance is that reporting within 24 hours materially reduces the cost of a claim.

What CNA needs on a workers' comp report

Employer name, policy number, claim type, date, time and location of the accident. Then the employee's details, employment information, and the accident narrative. It runs to several pages once filled in, so faxing straight from the computer where the form was typed up avoids printing and rescanning.

Dealing with more than one insurer on the same incident is common. Our directory also covers Chubb's fax numbers, how to fax Travelers, the Selective Insurance fax page, Sentry Insurance's claims fax, and sending a fax to State Farm, each with its own destination and audience notes.

CNA's claim-kit fax numbers are provider-facing. Fax.Plus stores documents with 256-bit AES encryption at rest.

FAQs

Why is the fax number not on CNA's Claims Center page?

CNA's Claims Services page names fax as one of its reporting channels but the number itself is only printed in CNA's claim collateral: the wallet cards issued with a policy and the claim kits published for download. The Claims Center page offers phone and an online form.

Is there a fax number for CNA long-term care claims?

Not one published on CNA's own website. Long-term care policies are serviced through a separate policyholder portal rather than the commercial claims intake, so any number found on an aggregator site is unverified. Use the contact details printed on your own policy documents.

How fast does CNA want a workers' comp claim reported?

Within 24 hours of the incident, according to CNA's own claim kit. Its argument is financial: the indirect costs of a delayed report, overtime cover and time spent investigating after the fact, can run to several times the direct cost of the claim itself.

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