Reference Sets Practical Guide

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As part of developing a new reference set it should be created and identified as part of the Edition that the Edition that it belongs to.

When creating a new reference set, the organization developing the reference set will need access to a namespace in order to generate SCTIds. Within their namespace, a moduleId concept (with an FSN and Preferred Term) should be added, placed in the the 

Concept
t900000000000443000 | Module (core metadata concept) |
ShowFormatinline
subhierarchy within the metadata, for each authoring organization.

To specify any reference set it is necessary to identify the reference set by creating a concept and name the reference set by associated descriptions. The concepts should be a subtype of the relevant reference set type concept in the foundation metadata hierarchy. This could for example be as a descendant of the the 

Concept
t446609009 | Simple type reference set (foundation metadata concept) |
, or the the 
Concept
t900000000000512005 | Query specification type reference set (foundation metadata concept)|
. The latter is used for intensional reference set definitions. Following table shows the steps to follow when creating a new reference set.

...

1. Define the reference set in the metadata hierarchy

...

  1. Create a

    Gloss
    Spacetrue
    tconcept
    for the reference set

  2. Add up to three

    Gloss
    Spacetrue
    tDescriptions
    for the reference set concept. I.e. the FSN, the
    Gloss
    Spacetrue
    tPreferred Term
    and optionally the purpose, see 4.1.3. Naming Conventions for Reference Sets

  3. Specify the acceptability of the descriptions in the applied Language Reference Set 

  4. Add an | is a | 

    Gloss
    Spacetrue
    tRelationship
    to link the reference set to the appropriate pattern

...

2. Define the reference set Attributes within the metadata hierarchy

Add new

Gloss
Spacetrue
tconcepts
for each of the reference set member attributes, if necessary. If the reference set attributes describing the pattern are adequate to describe the reference set's attributes, then these can be used instead. You may add new
Gloss
Spacetrue
tconcepts
for some of the attributes, and reuse existing
Gloss
Spacetrue
tconcepts
for other attributes, if you wish.

 Following steps should be taken for each attribute that you wish to create:

...

a

Gloss
Spacetrue
tconcept

...

Gloss
Spacetrue
tDescriptions

...

new

...

Link it with an | is a |

Gloss
Spacetrue
tRelationship
into the
Concept
t900000000000457003 | Reference set attribute (foundation metadata concept) |
ShowFormatinline
Gloss
thierarchy

If new attribute values need to be created these should also be added as SNOMED CT concepts and placed as subtypes of the concept

Concept
t900000000000457003 | Reference set attribute (foundation metadata concept) |

...

3. Create the Descriptor for the reference set

...

4. Add members to the reference set

...

reference set

...

.

...

 

For additional information, see:  13.1 How to create a new Reference Set using an existing pattern