# snomed ct edition

## SNOMED CT edition

A complete set of SNOMED CT components and reference set members that either belong to an identified SNOMED CT module or belong to one of the modules on which that *module* depends.

#### Notes

* The module used to define the scope of an *edition* is referred as the focus module of that *edition*.
* All *SNOMED CT editions* (except the International Edition) are a combination of one or more extension modules, together with the modules from the SNOMED CT International Edition.
* A complete *SNOMED CT edition* may be prepared and released by SNOMED International or by the provider of a SNOMED CT Extension. Alternatively, a *SNOMED CT edition* may be derived from one or more release packages, by combining the contents of an identified *focus module* with the contents of the relevant version of all modules on which the *focus module* depends.
* The dependencies between modules are represented using the [| Module dependency reference set (foundation metadata concept)|](http://snomed.info/id/900000000000534007) .
* A SNOMED CT edition can be identified using a Uniform Resource Identifier (URI) as specified by the URI Standard (2.1 URIs for Editions and Versions).

#### Examples

* The SNOMED CT International Edition consists of the *focus module* , [| SNOMED CT core module|](http://snomed.info/id/900000000000207008) , and the module on which it depends, [| SNOMED CT model component module|](http://snomed.info/id/900000000000012004) .
* The US National Edition (including the US SNOMED to ICD-10-CM maps) consists of the *focus module* , [| SNOMED CT to ICD-10-CM rule-based mapping module|](http://snomed.info/id/5991000124107) , and the three modules on which this depends, [| US National Library of Medicine maintained module|](http://snomed.info/id/731000124108) , [| SNOMED CT core module|](http://snomed.info/id/900000000000207008) and [| SNOMED CT model component module|](http://snomed.info/id/900000000000012004) .

## Alternatives

* **Edition**

##

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