US Patent 8355923 Systems and methods for de-identification of personal data

According to some embodiments, supplemental data may be retrieved from a supplemental data source. It may be automatically detected that a first personal insurance information value in the supplemental data source is correlated with a first personal insurance information value in the original insurance claim records source. A second personal insurance information value that was previously used to replace the first personal insurance information value in the original insurance claim records source may then be retrieved, and the first personal insurance information value in the supplemental data source may be automatically replaced with that same second personal insurance information value to provide referential integrity.