Document that the patient receives after the physician files an insurance claim for Part A services in the Original Medicare Plan. It lists the services the provider billed, the Medicare-approved amount, the Medicare payment, and the amount the patient must pay. The patient may also receive a Medicare Summary Notice (MSN) (formerly known as an Explanation of Medicare Benefits [EOMB] ). See also Medicare Summary Notice (MSN), remittance advice (RA) , and Explanation of Medicare Benefits (EOMB) .