Understanding and using your Medicare summary notice

The Medicare Summary Notice (MSN) is a document that Medicare sends to beneficiaries every three months if they've received services during that period. It's a record of all the services and supplies that healthcare providers and suppliers have billed to Medicare, along with how much Medicare approved, how much Medicare paid, and your potential responsibility.

Many people might glance at their MSN and then set it aside, assuming everything is correct. However, making a habit of reviewing this notice is one of the best ways to ensure your Medicare benefits are being used appropriately and to protect yourself from costly mistakes or even fraud.

What information does the MSN contain?

Each MSN lists several key pieces of information for every service or item billed to Medicare. You'll see the date of service, a description of the service or supply, the name of the provider, the amount the provider charged, the amount Medicare approved, the amount Medicare paid, and the amount you may owe (your deductible, coinsurance, or copayment). It also indicates if a service was denied and why. For those with Medigap or other supplemental insurance, the MSN will often state that information was forwarded to your other insurer.

Why is reviewing your MSN so important?

Regularly reviewing your Medicare Summary Notice serves several crucial purposes:

• Catching billing errors: Mistakes happen. A provider might accidentally bill for the wrong service, or for a service you didn't receive. For example, you might see a charge for a procedure that was canceled or for a doctor's visit on a day you weren't there. Catching these errors can prevent you from being wrongly billed.
• Spotting potential fraud: While less common, the MSN is an important defense against Medicare fraud. If you see services or equipment listed that you never received, or services performed by a provider you've never visited, this could be a sign of fraudulent activity. Reporting such discrepancies helps protect the Medicare system and all beneficiaries.
• Tracking your deductibles and out-of-pocket costs: The MSN clearly shows how much of your deductible has been met and your total cost for services. This helps you understand your financial responsibilities and can aid in budgeting for healthcare expenses, especially if you're approaching your deductible limit.
• Understanding denied claims: If Medicare denies a claim, the MSN will provide a reason. This allows you to follow up with your provider or Medicare if you believe the denial was an error or if you need to appeal the decision.

How to review your MSN effectively

When your MSN arrives, take a few minutes to go through it carefully. Compare the dates of service to your personal calendar or records. Make sure the services listed match what you actually received. Pay attention to the amounts billed versus the amounts Medicare approved and paid, and understand what you are expected to pay.

If anything looks incorrect, or if you have questions, start by contacting your healthcare provider's billing office. Many issues can be resolved directly with them. If you suspect fraud or if you can't resolve a billing issue with your provider, you can contact Medicare directly through the number on your MSN or by calling 1-800-MEDICARE. You can also view your MSNs online at any time by logging into your MyMedicare.gov account.

Making the review of your Medicare Summary Notice a routine habit is a simple yet powerful way to stay informed about your healthcare and safeguard your benefits.