Metadata Hierarchy
As the release file formats contain a number of concept enumerations, it is necessary to define sets of concepts that represent the allowed values. As well as the enumerated values, other metadata supporting the extensibility mechanism and the concept model is required.
The concept 900000000000441003 | SNOMED CT Model Component (metadata)| is a subtype of the root concept (138875005 |SNOMED CT Concept|), and contains the metadata, supporting the release.
The subtypes of |SNOMED CT Model Component (metadata)| are described in the following table and the top three levels of the hierarchy are shown in the figure below this.
SNOMED CT Model Component (metadata)
106237007
|Linkage concept (linkage concept)|
Concepts that specify
Semantic Relationships between concepts (246061005 |Attribute|); and
Asserted associations between statements in a record (416698001 |Link assertion|).
370136006
|Namespace concept (namespace concept)|
Concepts that specify the Extension Namespaces allocated by the SNOMED International.
900000000000442005
|Core metadata concept (core metadata concept)|
Concepts that are referenced from enumerated fields within the International Release files (the Concept, Description, Relationship, Identifier).
900000000000454005
|Foundation metadata concept (foundation metadata concept)|
The metadata that supports the extensibility mechanism, and is discussed in more detail in the Reference Sets Guide.
762947003
|OWL metadata concept (OWL metadata concept)|
The OWL metadata concept has subtypes that are used in the OWL reference sets to provide a referencedComponent for some of the definitions or axioms that are required.
SNOMED CT Metadata Hierarchy (2018-01-31) - Core metadata concepts (top 3 levels only)
900000000000441003 |SNOMED CT Model Component| 900000000000442005 |Core metadata concept| 900000000000447004 |Case significance| 900000000000448009 |Case insensitive| 900000000000017005 |Case sensitive| 900000000000020002 |Initial character case insensitive| 900000000000449001 |Characteristic type| 900000000000227009 |Additional relationship| 900000000000006009 |Defining relationship| 900000000000225001 |Qualifying relationship| 900000000000444006 |Definition status| 900000000000073002 |Defined| 900000000000074008 |Primitive| 900000000000446008 |Description type| 900000000000550004 |Definition| 900000000000003001 |Fully specified name| 900000000000013009 |Synonym| 900000000000453004 |Identifier scheme| 900000000000294009 |SNOMED CT integer ID| 900000000000002006 |SNOMED CT UUID| 900000000000450001 |Modifier| 900000000000452009 |All| 900000000000451002 |Some| 900000000000443000 |Module| 900000000000445007 |IHTSDO maintained module| 466707005 |SNOMED CT Medical Devices module| 900000000000454005 |Foundation metadata concept| ... (see next table)
SNOMED CT Metadata Hierarchy (2018-01-31) - Foundation metadata concepts (top 3 levels only - some long lists replaced by ...)
900000000000441003 |SNOMED CT Model Component| 900000000000442005 |Core metadata concept| ... (see previous table) 900000000000454005 |Foundation metadata concept| 900000000000455006 |Reference set| 900000000000516008 |Annotation type| 900000000000521006 |Association type| 900000000000480006 |Attribute value type| 705109006 |Code to expression type reference set| 447250001 |Complex map type reference set| 609430003 |Concept model reference set| 900000000000538005 |Description format| 733614007 |Expansion history reference set| 609331003 |Extended map type reference set| 733613001 |Intensional definition reference set| 900000000000506000 |Language type| 705111002 |Map correlation and origin type reference set| 900000000000534007 |Module dependency| 723564002 |MRCM reference set| 733618005 |Ordered association type reference set| 733619002 |Ordered component type reference set| 447258008 |Ordered type reference set| 900000000000512005 |Query specification type| 900000000000456007 |Reference set descriptor| 900000000000496009 |Simple map| 446609009 |Simple type reference set| 900000000000457003 |Reference set attribute| 447257003 |"Linked to" reference set attribute| 900000000000511003 |Acceptability| ... 723569007 |Template| 106237007 |Linkage concept| 246061005 |Attribute| 410663007 |Concept history attribute| 410662002 |Concept model attribute| 116680003 |Is a| 408739003 |Unapproved attribute| 416698001 |Link assertion| 417151001 |Has explanation| ... 416872009 |Is etiology for| 417318003 |Is manifestation of| 370136006 |Namespace concept| 373872000 |Core Namespace| 370137002 |Extension Namespace 1000000| ... 713754005 |Extension Namespace 1000999|
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