The
MSP Lookup tool will allow you to answer a series of electronic yes/no questions to determine whether Medicare should be primary or secondary for that beneficiary. A link to the MSP Lookup tool appears at the top of the home page in the
Self Service Tools and Top Links section. Along with the tool, we developed some language to explain what the tool is designed to do, what it is based on, and what you should do if Medicare records do not match the results from the tool.