How Do Medicare and Medigap Pay My Medical Bills?

Updated on April 21st, 2021

Reviewed by Diane Omdahl

We aim to help you make informed healthcare decisions. While this post may contain links to lead generation forms, this won’t influence our writing. We follow strict editorial standards to give you the most accurate and unbiased information.

Medigap pays for some of the bills left over by Medicare’s coverage gaps – and it all happens automatically.

Medicare and Medigap work together smoothly to pay for your medical bills. It’s done automatically and usually without any input from you; that’s how Medigap policies work. That ease-of-use is a big appeal of owning a Medigap policy.

Your doctors are in charge of your medical care. They know that Medicare’s rules require that any procedure or treatment, such as surgery, a blood test or MRI, that the order is medically necessary. That means it is necessary to diagnose and treat a medical condition. After you’ve had your procedure, surgery, or tests, your doctors or the hospital electronically bill Medicare.  Medicare will pay its portion of the bills directly to your doctors and hospital.

Considering a Medicare Advantage or Medicare Supplement Plan?

Review options now.

How Do Medigap Insurers Know When to Pay Bills?

After that, Medicare uses a system called “crossover” to electronically notify your Medigap insurance company that they have to pay the part of the remainder (the gaps) that your Medigap policy covers. All you have to remember is this: always show your Medigap policy identification card, along with your Medicare card, to your medical providers. The rest is done automatically for you. 

Should You Doublecheck Your Medigap Coverage?

If you’ve had problems with insurance companies not approving your medical treatments (like surgery), then you’ve probably noticed a very important point here. A Medigap insurer’s only role is to pay bills, bills that Medicare has already approved. This means, however, that it’s up to you to check what treatments and services will be covered. If a doctor suggests a certain treatment or surgery, make sure that it’ll be covered by Original Medicare or your Medigap policy.

What If You Have a Billing Issue?

In rare cases, if a bill does get lost in the system or is left unpaid, it’s possible for you to file a claim with Medicare yourself. To help you monitor that, every three months Medicare will mail you an Explanation of Benefits (EOB) that summarizes all the bills they approved and paid on your behalf. You can also create an online Medicare account and view your bills there.

Considering a Medicare Advantage or Medicare Supplement Plan?

Review options now.

Considering a Medicare Advantage or Medicare Supplement Plan?

Review options now.

Share this article