Medicare Summary Notice (MSN)
A Medicare Summary Notice (MSN) shows all the services or supplies that were billed to Medicare during each 3-month period, what Medicare paid, and what you may owe the provider.
How to File a Claim
If you're in Original Medicare, doctors and suppliers are required by law to file Medicare claims for covered services and supplies you get. In very rare cases, you may need to file a claim on your own. If you get your Medicare healthcare through a Medicare Advantage Plan, these plans don’t have to file claims because Medicare pays these private insurance companies a set amount every month.
Medicare Appeals & Grievances
You have the right to appeal any decision about your Medicare services. This is true whether you're in Original Medicare, a Medicare Advantage plan, or a Medicare Prescription Drug Plan. If Medicare doesn't pay for an item or service you got, or if you aren't given an item or service you think you should get, you can appeal.