Loukides G, Denny JC, Malin B. The disclosure of diagnosis codes can breach research participants' privacy. Journal of the American Medical Informatics Association : JAMIA. 17(17). 322-7. PMID: 20442151 [PubMed] PMCID: PMC2995712
De-identified clinical data in standardized form (eg, diagnosis codes), derived from electronic medical records, are increasingly combined with research data (eg, DNA sequences) and disseminated to enable scientific investigations. This study examines whether released data can be linked with identified clinical records that are accessible via various resources to jeopardize patients' anonymity, and the ability of popular privacy protection methodologies to prevent such an attack.