SNOMED CT® Release Format 1 (RF1) Guide - ihtsdo

114 | SNOMED CT Release Format 1 (RF1) Guide July 2012
The Subset Definition File allows multiple tests to be used to define a subset, and to use true/false conditions
to be specified to determine which tests, and in which sequence, the tests should be used.The tests determine
the membership of the subset and the value of the Member Status field.
The Subset Definition File also contains metadata about the subset, such as the Subset Identifier, the Subset
Version, the LanguageCode, and Realm Identifier.
The Subset Definition File can be used to represent concept and description subsets. It cannot be used for
navigation subsets, or for duplicate terms subsets.
Future specifications for the Subset Definition Filemay enable multiple subsets to be specified in one file, and
for one subset to be used as the basis for another subset so that only the differences between the subsets
need to be specified.
3.2.4.3. Released Subsets
The following subsets are maintained and licensed by the IHTSDO. The date of first issue and, where
appropriate, retirement are noted.
Table 40: Released Subsets
Subset
US English Dialect Subset
UK English Dialect Subset
Spanish Subset
German Subset
Type of Subset
Language / Dialect
Language / Dialect
Language
Language
Subset Contents
Identifies Descriptions that are appropriate for the US
dialect of the English Language. This subset applies
to the English Language Descriptions Table. This
Subset was first available with the First Release US
Edition.
Identifies Descriptions that are appropriate for the
British dialect of the English Language. This subset
applies to the English Language Descriptions Table.
This Subset was first available with the First Release
UK Edition.
Identifies Descriptions that comprise the Spanish
Edition of SNOMED CT. This Subset is required to
determine the contents of the Spanish release, which
includes descriptions both in English and Spanish.
This subset applies to the Spanish Edition
Descriptions Table. This Subset was first available
with the SNOMED CT Spanish Edition April 2002
Release.
Identifies Descriptions that comprise the German
Edition of SNOMED CT. This Subset is required to
determine the contents of the German release, which
includes descriptions both in English and German.
This subset applies to the German Edition
Descriptions Table. This Subset was first available
with the SNOMED CT German Edition April 2003
Release. It is not currently maintained or distributed.
© 2002-2012 International Health Terminology Standards Development Organisation CVR #: 30363434