DEFINITION of 'Death Master File (DMF)'

Also known as Social Security Death Index. A list of people whose deaths were reported to the Social Security Administration since 1962. By definition, the Death Master File only contains death data of people who had Social Security numbers. It's used in clinical studies, as well as by insurance and financial firms, and by government agencies. The data can be found here and here.

BREAKING DOWN 'Death Master File (DMF)'

The information on the list includes the person's name, death date, Social Security Number (SSN), and whether death was verified and a death certificate issued. Currently, there are over 80 million deaths recorded in the file.

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