What to Keep: A Simple Filing System for Medical Bills and Medicare Notices

Keep every medical bill, receipt, Medicare Summary Notice (MSN) or Explanation of Benefits (EOB), and insurance letter until the bill is paid and any appeal is finished. Medicare.gov suggests keeping receipts and bills and comparing them to your MSN, and keeping a calendar of your appointments helps you spot charges for care you didn't get. If you deduct medical expenses on your taxes, the Internal Revenue Service (IRS) generally says to keep supporting records for 3 years after you file.

What papers should I keep?

Medicare and your plans send several kinds of mail. Keep these:

Medicare Summary Notices (MSNs) for Original Medicare. Medicare sends them every 6 months if you had services.
Explanations of Benefits (EOBs) from a Medicare Advantage plan, drug plan, Medigap plan, or other insurance.
Bills and statements from doctors, hospitals, labs, ambulance companies, and equipment suppliers.
Receipts for copays and anything you paid at the front desk or pharmacy.
Letters about denials, appeals, and decisions.
Any Advance Beneficiary Notice of Noncoverage (ABN) you signed.
Plan documents you'll need for the year, like your plan's Evidence of Coverage or annual notice of changes.
Records of calls about bills, with the date, name, and what was said.

What's the simplest filing system that works?

You don't need anything fancy. One accordion file or one binder per year is enough. Use five sections:

To check. New bills and notices that you haven't matched up yet.
Waiting. Bills you've questioned, appeals in progress, and anything you're waiting on (a corrected bill, a refund, a plan decision). Clip your call notes to each one.
Paid / settled. Bills you've paid or confirmed you don't owe, stapled to the matching MSN or EOB page and your receipt.
Medicare and plan notices. MSNs and EOBs, newest on top.
Reference. Your plan's Evidence of Coverage, your Medigap policy summary, any ABNs, and your appointment calendar.

Each month, empty the mailbox into "To check," then work through it.

How do I match a bill to my Medicare notice?

For each bill:

Find the date of service and the provider name.
Find the same date and provider on your MSN or EOB.
Compare the bill's amount due with the "Maximum You May Be Billed" (MSN) or "your share" (EOB).
If they match and any supplement has paid, pay and file under "Paid / settled."
If they don't match, move it to "Waiting" and call the provider.

Medicare.gov suggests that if you paid a bill before you got your MSN, you compare the two to make sure you paid the right amount.

Why keep an appointment calendar?

Medicare's "Protecting Yourself From Fraud" booklet suggests recording the dates of your care on a calendar and saving receipts and statements, then comparing them with the claims Medicare processed. It's the easiest way to notice a charge for a day you weren't seen, or equipment you never got.

A paper wall calendar works fine. Write the provider's name on each appointment day.

Can I keep these records online instead?

Yes, partly. Medicare.gov says you can create a secure Medicare.gov account to see your Original Medicare claims as soon as they're processed. You can also sign up for electronic MSNs, which send you an email with a link for any month you have a processed claim.

Many plans and providers also have online portals. If you go paperless:

Make one folder on your computer for each year, with the same five sections.
Name files with the date and provider, like "2026-03-14 Hospital bill."
Back up the folder.

A photo of a paper bill saved in the right folder works too.

How long should I keep medical bills and notices?

There's no single Medicare rule for this. Some practical guidelines:

Until it's settled. Keep every bill and notice until the bill is paid and any appeal or dispute is finished. Medicare appeals have deadlines measured in days and months, and later levels can take longer, so keep everything tied to an appeal until you get the final decision.
For taxes. If you deduct medical expenses, IRS Publication 502 explains which expenses count. The IRS says to generally keep records that support a deduction for 3 years from when you filed the return, with longer periods in some situations.
For a fuller record. Some families keep a full year of MSNs, EOBs, and paid bills together, then move them to a "past years" box.

When you throw old records away, shred anything with your Medicare Number, Social Security Number, or account numbers. Medicare.gov advises protecting your Medicare card and number from anyone who shouldn't have them.

What if I'm managing a parent's paperwork?

Keep a separate file for each person. Add a cover sheet with their Medicare Number, plan names and phone numbers, Medigap company, doctors' names, and pharmacy. If Medicare has your parent's written permission to talk with you, keep a copy of that form in the "Reference" section too.

Frequently asked questions

Do I need to keep every Medicare Summary Notice?

Keep each MSN until the bills for those services are paid and any appeals are done. Many people keep a full year together.

Should I throw away a bill after I pay it?

Keep it with the matching MSN or EOB and your receipt, at least until the year's records are settled and longer if you use it for taxes.

Can I see my Medicare claims without the paper notice?

Yes. Medicare.gov says you can view Original Medicare claims in your secure Medicare.gov account as soon as they're processed.

What's the most important thing to keep with a bill?

The matching MSN or EOB page. It shows what Medicare or your plan paid and the most you can owe.

Want help keeping up with the pile?

Bill Review Coach is a monthly medical bill review service for seniors and their families. Each month, snap photos of the new bills and notices, and you'll get a plain-English summary of what matches, what doesn't, and what to say on the phone. You make the calls and write the emails; we help you know what to say.