Your claim was denied for being filed too late. Here is what that means and what you can do.

What does timely filing mean on my denial letter?

It means the plan says your claim arrived after its deadline. Every plan sets its own window, and the letter or your plan documents should say what it is.

For Original Medicare the window is 12 months from the date of the service. If a claim is late, Medicare will not pay its share unless an exception applies.

You are not alone, and a late-filing denial is not always the final word.

Whose job was it to file the claim, mine or my doctor's?

In Original Medicare, the law requires your doctor, provider, or supplier to file the claim, not you. For Medicare drug plans the pharmacy files, and for Medicare Advantage in-network providers usually submit claims to your plan.

For other insurance, such as a job-based plan, a Marketplace plan, or Medicaid, the rules differ by plan. Many in-network providers file for you. Your plan's member handbook or a call to the number on your card will tell you who is expected to file.

Can I appeal a claim denied for being filed too late?

Yes, you can ask for a review. For private health insurance, HealthCare.gov says you must file an internal appeal within 180 days (6 months) of getting notice that your claim was denied.

Under those rules, the plan must finish the appeal within 30 days for a service you have not received yet and 60 days for care you already got. If the denial stands, you can ask for an outside review, called an external review. HealthCare.gov says to request it within 4 months of the final denial notice.

Medicare, Medicaid, and some job-based plans have their own appeal steps and deadlines. Always go by the deadline printed on your own denial letter, write down the day it arrived, and act soon.

• Step 1: Find the dates. Write down the date of the service, the date the claim was filed, and the date on your denial letter.
• Step 2: Ask who filed and when. Call the office or provider and ask for the date they sent the claim and any proof, such as a confirmation report.
• Step 3: Ask the plan for an exception or appeal. Send a written request to your plan within the appeal deadline in your letter, with your proof attached.
• Step 4: Keep copies and follow up. Keep everything, note each call with date and name, and ask for an outside review if the plan says no.

How do I prove the claim was sent on time?

Ask the provider's office for a copy of the confirmation or acceptance report from when the claim was sent, or a mailing receipt if it went by mail. Dates and your name or claim details should be visible.

Also gather any earlier denial or explanation of benefits, since a claim first sent to the wrong plan may help explain a delay. You can include a letter from your doctor or other supporting papers with your appeal.

Can I be billed if my provider filed late?

It depends on your plan, your provider's contract, and your state, and we cannot say for sure. Do not pay the bill or ignore it yet.

Ask the provider in writing to explain the delay, and contact your state insurance department if you are unsure about your rights. This is not legal advice.

What if the deadline to appeal is almost over?

Call your plan today and ask for the exact appeal deadline in writing. If the denial letter is hard to read, you can text a photo of it to (213) 606-6303 and we will read it and reply with where it breaks. It is free, with no account and no form.

If you have Original Medicare and the claim was never filed, ask the provider to file it, and call 1-800-MEDICARE to ask for the exact time limit. If the limit is close, Medicare.gov says you can file the claim yourself with Form CMS-1490S.

Your checklist

• Write down the service date, claim date, and the date on the letter
• Circle the appeal deadline in the denial letter
• Ask the provider for proof of the date they sent the claim
• Save every letter, explanation of benefits, and confirmation report
• Send your appeal or exception request in writing, keep a copy
• Log each call: date, name, what was said
• Ask for an outside review if the plan says no

A letter you can copy

[Date] [Your name] [Your address] [Member ID] [Claim number] To: [Plan name], Appeals Department [Plan address or fax from your denial letter] Re: Appeal of denial for late filing Date of service: [date] Provider: [provider name] Date on denial letter: [date] I am appealing the denial of this claim for being filed after the plan's deadline. The claim was sent to the plan on [date the claim was sent], and I have attached [confirmation report / mailing receipt / earlier explanation of benefits] as proof. I ask the plan to review this denial and, if the claim was late for any reason outside my control, to grant an exception and process the claim. Please send me your decision in writing and tell me how to request an outside review if you uphold the denial. Thank you, [Your name] [Phone]

Which rules apply to you?

The steps and deadlines on this page can differ by the kind of plan you have. Your own denial letter always comes first.

• Coverage through a job:ask your HR team whether the plan is “self-funded” or “fully insured.” It can change who you can ask for help. Most private-sector job plans fall under a federal law called ERISA, and the U.S. Department of Labor’s EBSA takes health plan questions at Ask EBSA or 1-866-444-3272.
• Marketplace plan: follow the appeal steps at HealthCare.gov.
• Medicare or Medicaid: each has its own appeal process, listed on your notice.
• Dental-only plan: your plan contract sets the appeal rights, so read it and your letter.

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Free tools for the next step

Keep your appeal papers in one place. Take a photo of your denial letter, EOBs and insurance cards with GetPreCare, so they are on your phone when the insurer or the office asks. Free. Open GetPreCare. Helping a parent or partner? Set it up for them.