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SNOMED CT contains descriptions and each description contains both a human-readable term and some information about the term. A description is used to give meaning to a concept and provide well-understood and standard ways of referring to a concept. So, each description is associated with a specific concept, but each concept is associated to several descriptions. Additionally, the descriptions are specific to a language or dialect.
All Descriptions are of a specific type and the most common description types are theandThe Description file holds descriptions that describe SNOMED CT concepts. The description file is released with the international International Edition of SNOMED CT. National or Affiliate Editions may develop their own description file, e.g. to represent description in their own language and/or dialects.
The Language reference set is essential to enable the preferred terms to be identified for each concept. Language reference sets refers to Descriptions that is used in a particular language or dialect. For each Description referenced in the language reference set a value for the acceptability of the term associated with that Description is assigned. The values for the Acceptability attribute is represented by descendants of the concept

Scg expression
900000000000511003 \| Acceptability \|

, which is placed in the foundation metadata subhierarchy of SNOMED CT.

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Even though a concept has several descriptions of the type

Scg expression
900000000000013009 \| Synonym (core metadata concept) \|

related to it, the Language language reference set allows automatic identification of the Preferred term. The language reference set does not contain any terms, as these are represented in the description file. Hence, the language reference set refers it refers to descriptions by referencing the descriptionId, and the description release file is therefore a prerequisite for retrieving the actual term when applying the language reference set .

Field

Data type

Purpose

referencedComponentId

SCTID

The identifier of a included in the language reference set.

acceptabilityId

SCTID

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