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A representation of a SNOMED CT component at a particular point in time.

Notes

  • In SNOMED CT release files each component version is represented as a single row with a unique combination of component.id and component.effectivetime.
  • The component.id uniquely identifies the component and is shared by other versions of that component.
  • The component.effectiveTime distinguishes different versions of the same component. It indicates the point in time at which that version became the authoritative version of that component.  The effectiveTime of the first version of a component represents the time when it first became available for use. The effectiveTime of each subsequent version of a component represents the time when that version superseded the previous version.

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