Although HL7 v2.x has been in use for more than 25 years and is thus probably the most widely used data exchange standard in the healthcare domain, there are still ongoing discussions about technical terminology, i.e., how exactly individual specifications are to be interpreted. This has led to the idea of modernizing the specification/standard without requiring any change in implementations. In other words, formalize the standard using words that are easier to understand. In parallel, the coexistence with the upcoming FHIR standard triggers modifications within HL7 v2.x. This paper explores the interaction between the modernization of HL7 v2.x and the convergence with FHIR.
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