If SNOMED CT is to serve as a biomedical reference terminology, then steps must be taken to ensure comparability of information formulated using successive versions. New releases are therefore shipped with a history mechanism. We assessed the adequacy of this mechanism for its treatment of the distinction between changes occurring on the side of entities in reality and changes in our understanding thereof. We found that these two types are only partially distinguished and that a more detailed study is required to propose clear recommendations for enhancement along at least the following lines: (1) explicit representation of the provenance of a class; (2) separation of the time-period during which a component is stated valid in SNOMED CT from the period it is (or has been) valid in reality, and (3) redesign of the historical relationships table to give users better assistance for recovery in case of introduced mistakes.
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Article Synopsis
- The text discusses the importance of both structural and semantic standards for medical data interoperability, focusing on FHIR for structure and SNOMED CT for semantic meaning.
- It introduces a solution for storing postcoordinated expressions (PCEs) by integrating them with the FHIR data model, allowing effective medical data interchange.
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