A 1119417006 |Postcoordinated expression type reference set (foundation metadata concept)| provides a standardized way to represent postcoordinated expressions. This representation is useful for the implementation of a postcoordinated expression repository.
A 1119460002 |Postcoordinated expression type component (foundation metadata concept)| is a type of |Reference set (foundation metadata concept)| .
Postcoordinated expression type reference set reference set - Data structure
The following metadata hierarchy supports this reference set:
Postcoordinated expression type reference set reference set in the Metadata Hierarchy
The tables below show the descriptor that defines the reference sets that follows the data structure of the .
Refset Descriptor rows for the postcoordinated expression type reference set.
The International Edition of SNOMED CT includes two different types of the . These are the and . Both of these reference sets provide a standardized way of representing different types of SNOMED CT expressions, and are useful for the implementation of a postcoordinated expression repository.
The provides a standardized way to represent postcoordinated expressions as they were captured by the users, but in a canonical form. The provides a standardized way to represent postcoordinated expressions in a classifiable form. The classifiable form is a syntactically valid and concept model compliant representation of the close-to-user form expression, and serves as the input to the classifier, enabling compositional expressions to be classified with SNOMED CT content.
Boolean
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
moduleId
SCTID
Identifies the SNOMED CT module that contains this reference set member as at the specified effectiveTime.
The value must be a subtype of within the metadata hierarchy.
YES
NO
refsetId
SCTID
Identifies the reference set to which this reference set member belongs.
In this case, a subtype descendant of:
NO
NO
referencedComponentId
SCTID
A reference to the SNOMED CT component to be included in the reference set.
NO
NO
expression
String
A SNOMED CT expression that conforms to the compositional grammar.
YES
NO
substrate
Uniform Resource Identifier
The SNOMED CT content by which the expression is authored.
YES
NO
1
2
id
UUID
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)
effectiveTime
Time
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)
active
0