Purpose
A 900000000000506000 | Language type reference set| supports the representation of language and dialects preferences for the use of particular descriptions. The most common use case for this type of reference set is to specify the acceptable and preferred terms for use within a particular country or region. However, the same type of reference set can also be used to represent preferences for use of descriptions in a more specific context such as a clinical specialty, organization or department.
Data structure
A Language reference set is a Component reference set that is used to indicate which descriptions contain terms that are acceptable or preferred in a particular language or dialect. Its structure is shown in the following table.
Table 5.2.2.1-1: Language reference set - Data structure
Field | Data type | Purpose | Part of Primary Key | |
id | A 128 bit unsigned Integer, uniquely identifying this reference set member. Different versions of a reference set member share the same id but have different effectiveTime. This allows a reference set member to be modified or made inactive (i.e. removed from the active set) at a specified time.
| NO | YES (Full /Snapshot) | |
The inclusive date or time at which this version of the identified reference set member became the current version. Note: In distribution files the effectiveTime should follow the short ISO date format (YYYYMMDD) and should not include the hours, minutes, seconds or timezone indicator. The current version of this reference set member at time T is the version with the most recent effectiveTime prior to or equal to time T .
| YES | YES (Full) Optional (Snapshot) | ||
The state of the identified reference set member as at the specified effectiveTime . If active = 1 (true) the reference set member is part of the current version of the set, if active = 0 (false) the reference set member is not part of the current version of the set.
| YES | NO | ||
Identifies the SNOMED CT module that contains this reference set member as at the specified effectiveTime . The value must be a subtype of 900000000000443000 | Module (core metadata concept)| within the metadata hierarchy.
| YES | NO | ||
Identifies the reference set to which this reference set member belongs.
In this case, a subtype descendant of: 900000000000506000 | Language type|
| NO | NO | ||
A reference to the SNOMED CT component to be included in the reference set. Refers to the description to which the acceptability value is being applied.
| NO | NO | ||
A subtype of 900000000000511003 | Acceptability| indicating whether the description is acceptable or preferred for use in the specified language or dialect . | YES | NO |
Language Reference Rules and Guidance
In a Language reference set:
- No more than one description of a specific description type associated with a single concept may have the acceptabilityId value 900000000000548007 | Preferred| .
- Every active concept should have one preferred synonym in each language.
- This means that a language reference set should assign the acceptabilityId 900000000000548007 | Preferred| to one synonym (a description with typeId value 900000000000013009 | synonym| ) associated with each concept .
- This description is the preferred term for that concept in the specified language or dialect.
- Any description which is not referenced by an active row in the reference set is regarded as unacceptable (i.e. not a valid synonym in the language or dialect ).
- If a description becomes unacceptable, the relevant language reference set member is inactivated by adding a new row with the same id, the effectiveTime of the the change and the value active=0.
- For this reason there is no requirement for an "unacceptable" value.
Metadata
The following metadata supports this reference set :
Table 5.2.2.1-2: Language References Sets in the Metadata Hierarchy
The immediate children of
|
Language type|
will represent languages. This level may be used to represent the "formal approved" language, where a language authority is formally recognized. In most cases, this level will not identify a specific reference set. Subtype of the language level are used to represent different dialects, national or regional variants.
Notes on the tables used to show descriptors and examples The reference set example tables on this page have been revised as follows to aid clarity and understanding:Reference Set Descriptor and Example Data
Language Reference Descriptor
The table below shows an example of the descriptor for a specific reference sets that follows the 900000000000506000 | Language type reference set| pattern.
Table 5.2.2.1-3: Refset Descriptor rows for a language reference set
refsetId | referencedComponentId (Referenced component) | attributeDescription (Attribute description) | attributeType (Attribute type) | attributeOrder (Attribute order) |
0 | ||||
1 |
Language Reference Set Examples
Table 5.2.2.1-4: Sample content from the US English language reference set
refsetId | referencedComponentId (Description) | acceptabilityId (Acceptability in dialect) |
|---|---|---|
Table 5.2.2.1-5: Sample content from the GB English language reference set
refsetId | referencedComponentId (Description) | acceptabilityId (Acceptability in dialect) |
|---|---|---|
In the above examples, 80146002 | Excision of appendix| is acceptable in both US and GB English. However, 80146002 | Appendectomy| is preferred in US English and 80146002 | Appendicectomy| is preferred in GB English.
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