System for providing de-identified mortality indicators in healthcare data

摘要

A method and system for identifying individuals in a healthcare dataset who are likely deceased without exposing protected health information to users. The present invention assembles mortality data from different sources, de-identifies this data by removing or modifying all elements regarded as protected health information, and adds a unique encrypted person token to each record. The tokenized mortality data is merged with other healthcare data sets that have likewise been de-identified and tokenized by matching the unique person tokens in data sets against each other. The resulting merged data sets include an indicator of mortality, a uniqueness score giving the likelihood that the person token is unique, and a death validity score giving a measure of confidence that the person is actually deceased.