> For the complete documentation index, see [llms.txt](https://docs.snomed.org/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.snomed.org/snomed-international-documents/snomed-ct-glossary/r/reference-set-member-version.md).

# reference set member version

## reference set member version

A reference set member as created or modified at a particular point in time.

#### Notes

* A *reference set member version* is represented in release files as a single row with an identifier, unique to that reference set member.
* The identifier is shared by other versions of that *reference set member* as indicated by the *effectiveTime* and *active* fields.
  * The *effectiveTime* field indicates the point in time at which this version of the *reference set member* was created or superseded the previous version of the same *reference set member.*
  * The *active* field indicates if the *reference set member* is active or inactive.

## Related 

* Reference set
* Reference set member
* Reference Sets Practical Guide
* Release FIle Specification - Reference Set Types

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