NCHS survey data have been linked to the National Death Index data containing information on mortality status, date of death, and cause of death. These data can be accessed in the NCHS Research Data Center (RDC) or at a federal statistical RDC managed by the U.S. Census Bureau.
The restricted-use Linked Mortality File (LMF) has been updated with mortality follow-up data through December 31, 2015 https://go.usa.gov/xnMTW
NCHStats 