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Purpose

An 900000000000516008 |Annotation type reference set| allows String to be associated with components for any specified purpose.

Data structure

An annotation reference setStringreference set used to apply text annotation to selected SNOMED CT components .

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 active (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 memberbecame the current version.

The current version of this reference set memberat time T is the version with the most recent effectiveTime prior to or equal to time T .

YES

YES (Full)

Optional (Snapshot) 

active

Boolean

The state of the identified reference set memberas at the specified effectiveTime .

If active = 1 (true) the reference set memberis part of the current version of the set, if active = 0 (false) the reference set memberis not part of the current version of the set.

YES

NO

moduleId

SCTID

Identifies the SNOMED CT modulethat contains this reference set memberas at the specified effectiveTime .

The value must be a subtypeof 900000000000443000 |Module (core metadata concept)|within the metadata hierarchy.

YES

NO

refsetId

SCTID

Identifies the reference setto which this reference set memberbelongs.

In this case, set to as subtype descendant of: ??

NONO

referencedComponentId

SCTID

A reference to the SNOMED CT componentto be included in the reference set.

NONO

annotation

String

The text annotation to attach to the component identified by referencedComponentId .

YESNO

Metadata

The following metadata in supports this reference set :


Reference Set Descriptor and Example Data

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:

  • The first four columns which are present in all release files are not shown. The omitted columns (ideffectiveTimeactivemoduleId) are used in the same way in all referenced sets to support identification, versioning and packaging. They do not directly affect the specific features of a particular reference set or reference set type.
  • Reference set columns that contain SNOMED CT identifiers are expanded to show details of the concept or description referenced by that identifier. In some cases, the term is shown in the same column using the expression syntax, in other cases an additional column with a name suffix '_term' has been added. In the standard reference set files only the identifier is present in the column and there is no added column for the term. When using reference sets, the term and other details of the component are looked up from the relevant component release files.

Descriptor Template

The tables below show the descriptors that define the structure of the 900000000000516008 |Annotation type reference set| pattern and examples of the descriptors for specific reference sets that follow this pattern.

The attributeType for the Annotation field can be any descendant of the " string " concept in the metadata hierarchy. This hierarchy is described in more detail under the " Reference set descriptor" section.

Note that in the table above, the 900000000000469006 |URL|concept is a descendant of | string | concept in the metadata.

Annotation Reference Set Example

As no annotation reference sets are included in the International Release, these sample rows are for illustration only.

refsetId

referencedComponentId

Annotation

900000000000517004 |Associated image|

80891009 |Heart structure|

http://en.wikipedia.org/wiki/Heart#mediaviewer/File:Wiki_Heart_Antomy_Ties_van_Brussel.jpg

900000000000517004 |Associated image|

86174004 |Laparoscope|

http://www.educationaldimensions.com/eLearn/endoscope/bigScope.html

In the above example, the two URLs have been used to annotate two SNOMED CT concepts with images on the web. It is not recommended that this mechanism be used to annotate concepts with text that may require translation to other languages. Instead, such text should be included under an appropriate description type within the Description.


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