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Core Metadata Hierarchy

Core Metadata Concept

Hierarchy

Purpose

This concept is the supertype for metadata used directly by SNOMED CT components.

Concept Addition Rules

No new subtype children may be added in an extension.

See tables below for concept addition rules for each of the subtypes of .

Characteristic Type

Concept Addition Uses Cases

  • Different lengths of text for different purposes

  • Different formats for text including HTML

  • Specialized usage of text for a specific purpose

Concept Addition Uses Cases

The addition of at least one module concept is essential for all extensions. More than one module concept may be added to enable content to be organized into separate modules.

Hierarchy

900000000000449001 | Characteristic type|

Purpose

This subhierarchy provides the values for Relationship.characteristicTypeId.

Examples

  • 900000000000227009 | Additional relationship|

  • 900000000000006009 | Defining relationship|

  • 900000000000225001 | Qualifying relationship|

Concept Addition Rules

No new subtype descendants may be added in an extension.

Hierarchy

900000000000444006 | Definition status|

Purpose

This subhierarchy provides the values for Concept.definitionStatusId

Examples

  • 900000000000073002 | Defined|

  • 900000000000074008 | Primitive|

Concept Addition Rules

Hierarchy

900000000000446008 | Description type|

Purpose

This subhierarchy provides the values for Description.typeId

Examples

  • 900000000000550004 | Definition|

  • 900000000000003001 | Fully specified name|

  • 900000000000013009 | Synonym|

Concept Addition Rules

Hierarchy

900000000000450001 | Modifier|

Purpose

This subhierarchy provides the values for Relationship.modifierId

Examples

  • 900000000000452009 | All|

  • 900000000000451002 | Some|

Concept Addition Rules

Hierarchy

900000000000443000 | Module|

Purpose

This subhierarchy provides the concepts used to identify modules

Examples

  • 900000000000207008 | SNOMED CT core|

  • 900000000000012004 | SNOMED CT model component|

  • 449081005 | SNOMED CT Spanish edition module|

  • 449080006 | SNOMED CT to ICD-10 rule-based mapping module|

Concept Addition Rules

Definition Status

Description Type

Modifier

Module

Provide Feedback
900000000000442005 | Core metadata concept|
900000000000442005 | Core metadata concept|

No new subtype descendants may be added in an extension.

Additional types permitted provided these are additive and do not replace the synonym or fully specified name values

No new subtype descendants may be added in an extension.

The addition of modules that form part of the extension is required. These new module concepts must either be direct children of or descendants of a child of that is owned by the same extension provider. It is not permitted to add modules as subtypes of modules maintained by another extension provider.

Each module concept added within an extension must have an identifier that contains the extension's namespace identifier.

449079008 | SNOMED CT to ICD-9CM equivalency mapping module|
900000000000443000 | Module|
900000000000443000 | Module|