# extended versioned edition

## extended versioned edition

A versioned edition to which specified versions of additional modules have been added.

#### Notes

* An *extended versioned edition* provides a way to add a set of modules containing maps, subsets and other derivatives to a versioned edition.
* An *extended versioned edition* is only valid if the module dependencies of all the additional *modules* are satisfied by other *modules* in that *extended versioned edition*.
* Additional *modules* included in an *extended versioned edition* may include additional reference sets and reference set members and metadata concepts (with descriptions and a subtype relationship linking them to the appropriate branch of the | SNOMED CT Model Component| hierarchy). However, they should **not** include other concepts, descriptions, relationships or OWL reference set members.

#### Examples

* The 2019-07-31 version of the SNOMED CT International Edition with the 2019-10-30 versions of both the [| International Health Terminology Standards Development Organisation general dentistry diagnostic module|](http://snomed.info/id/718292005) and the [| International Health Terminology Standards Development Organisation odontogram module|](http://snomed.info/id/721230008) .
* The 2019-10-31 version of the SNOMED CT Spanish Edition with the 2019-10-30 version of the [| SNOMED CT to ICD-10 rule-based mapping module|](http://snomed.info/id/449080006) .

## References

* **Terminology Service Guide**
  * 5.2.2 Enabling Access to Extended Editions

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