Yes. You have the right to an appeal. You can appeal if you disagree with a coverage or payment decision by Medicare or your Medicare plan. For example, you can appeal if Medicare or your plan denies: A request for a health care service, supply, item, or drug you think Medicare should cover. A request for payment of a health care service, supply, item, or drug you already received. A request to change the amount you must pay for a health care service, supplies, item or drug. You can also appeal if: Medicare or your plan no longer pays for or provides a service, item or drug you think you still need.