Standardizing Health-Care Data Across an Enterprise

Abstract Interoperability is achieved when two computing systems exchange information and the receiving system can meaningfully use the information exchanged. A key to achieving interoperability is data standardization, which is the translation of data into its canonical form in which there is a unique representation for each concept. By normalizing data into reference terminologies, data from various sources in the heath care ecosystem can be queried, aggregated, analyzed, and reused for a variety of purposes. However, conversion from locally used terminologies into normalized, reference terminologies can be a complex and resource-intensive process. Data standardization therefore requires substantial advance planning, focused implementation, and robust support services, as well as ongoing evaluation and improvement. Terminology Services is a collection of hardware and software components that can be used to facilitate data standardization across enterprise health information exchange. This chapter describes the process of and challenges inherent in data standardization, and it provides guidance for the design and implementation of Terminology Services.

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