Can I File a Medicare Claim Myself If My Dentist Will Not? Yes, With One Form and a 12-Month Clock.

Short answer: yes. Medicare has a form built for exactly this, the Patient Request for Medical Payment, form CMS-1490S. You fill it out, attach an itemized bill from your dentist and any supporting notes, and mail it to the Medicare Administrative Contractor for your state. The clock matters more than most people realize: the claim has to be filed within 12 months of the date of service, under 42 CFR 424.44, or Medicare will not pay its share no matter how clearly the work qualified.

This situation comes up more than it should. A dentist does the work, does not bill Medicare, and either does not explain why or simply says Medicare does not cover it. Sometimes that is true. Often, if the dental work was tied to a transplant, cancer treatment, dialysis, or heart valve surgery, it was covered and the office either was not enrolled in Medicare or did not know how to bill the exception at 42 CFR 411.15(i)(3). Either way, the form exists so the patient is not stuck.

Step	What to do
1. Get the itemized bill	Ask the dental office for an itemized bill. Medicare requires this attached to the form, it will not process the claim without it.
2. Fill out CMS-1490S	Complete the Patient Request for Medical Payment form, available from CMS in English and Spanish.
3. Add a short explanation	CMS recommends a brief letter stating why you are filing yourself, for example the provider would not file or is not enrolled in Medicare.
4. Attach supporting notes	Include any referral or exam notes that connect the dental work to a covered medical treatment, if that applies to your situation.
5. Mail it to the right contractor	Send everything to the Medicare Administrative Contractor address for your state, listed in the form's own instructions.
6. Watch the 12-month clock	File within 12 months of the date of service. There is no routine extension for simply running late.

What is form CMS-1490S, exactly?

CMS-1490S is the Patient Request for Medical Payment, the standard form Medicare uses when a beneficiary needs to submit their own claim instead of the provider submitting it. It exists for the ordinary reasons a provider might not file: the provider refuses to file, cannot file because they are not enrolled in Medicare, or simply never got around to it. Medicare will pay you directly when the form is completed correctly and the required attachment is included. The bill does not have to be paid in full before you file, but the itemized bill itself must be attached.

What has to be attached, and what happens if it is missing?

An itemized bill from the dentist or provider is not optional. Without it, Medicare cannot process the claim, regardless of how complete the rest of the form is. Beyond the bill, CMS recommends including a short letter explaining the circumstances, that the provider would not file, is not enrolled, or another specific reason, plus any supporting documentation, especially notes tying the dental work to a covered medical treatment if the claim depends on the exception at 42 CFR 411.15(i)(3). A claim for dental work linked to a transplant or cancer treatment is much stronger with the referral or exam note attached than with the bill alone.

How much time do I actually have?

Twelve months, or one full calendar year, from the date the service was provided, under 42 CFR 424.44. Medicare's own example makes the math plain: a service from March 22, 2019 needed its claim filed by March 22, 2020. There is no grace period for simply forgetting, and the deadline runs from the date of service, not from when you decided to file the claim yourself. The regulation does carve out narrow exceptions, most tied to Medicare contractor error, misrepresentation by a Medicare employee or agent, or retroactive Medicare entitlement or disenrollment situations, not ordinary delay or a provider dragging its feet.

Does the dentist still have to be enrolled in Medicare for this to work?

Generally, yes. Medicare requires a provider to be enrolled to bill and be paid for covered dental services, and filing the claim yourself does not remove that requirement. If your dentist is not enrolled in Medicare, a claim you file on CMS-1490S is unlikely to be paid, because Medicare is not paying a provider it does not recognize as enrolled. This is worth asking before the dental work happens, if the timing allows it: "Are you enrolled in Medicare?" If the answer is no, an enrolled oral surgeon or a hospital dental service may be able to do the same work in a way Medicare can actually pay for.

Where does the form actually go?

The completed form, itemized bill, and any supporting documents go to the Medicare Administrative Contractor responsible for your state, not to a single national Medicare address. The correct mailing address is printed on the Medicare Administrative Contractor Address Table included in the form's own instructions. Using the wrong regional address is a common, avoidable delay, so match the address to where you live before mailing.

What if the claim is denied after I file it myself?

If Medicare processes the claim and denies it, you still have appeal rights the same as any other Medicare claim. Under Original Medicare, the deadline to request a redetermination is 120 days from the date on the Medicare Summary Notice reporting the denial. Check that notice for the specific instructions and address, they are printed on the back of the notice itself. If the dental work was tied to a covered medical treatment under 42 CFR 411.15(i)(3), name that connection directly in the appeal.

A note on who we are

CheckMyDenial helps patients read and appeal insurance denials. We are related to a company that does medical-dental billing and reimbursement for patients and practices, and if you ever move from reading to having someone handle a claim for you, that relationship and any fee are disclosed before anything is paid. This page is free, it does not require anything from you, and it will stay that way.

Where this comes from

The form, required attachments, and mailing instructions come from Medicare.gov's page on filing a claim yourself and from the CMS page hosting form CMS-1490S directly. The 12-month filing deadline and its exceptions are quoted from 42 CFR 424.44, as published on the Cornell Legal Information Institute's mirror of the current eCFR text. The underlying dental coverage rule referenced for context is 42 CFR 411.15(i)(3). Links are listed at the end of this page. If you find something here that is out of date, tell us and we will fix it and change the date at the top.