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 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 900000000000443000 |Module (core metadata concept)| 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 446609009 |Simple type reference set (foundation metadata concept)| , or the 900000000000512005 |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.

StepDescription

1. Define the reference set in the metadata hierarchy

  1. Create afor the reference set

  2. Add up to threefor the FSN, theand optionally the purpose, see 4.1.3. Naming Conventions for Reference Sets

  3.  Add an | is a | to link the reference set to the appropriate pattern

2. Define the reference set Attributes within the metadata hierarchy

Add newfor 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 newfor some of the attributes, and reuse existingfor other attributes, if you wish.

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

  1. Add afor the attribute

  2. Link it with an | is a |into the 900000000000457003 |Reference set attribute (foundation metadata concept)|

  3. Addfor each of the new attribute.

    If new attribute values need to be created these should also be added as SNOMED CT concepts and placed as subtypes of the concept 900000000000457003 |Reference set attribute (foundation metadata concept)|  

3. Create the Descriptor for the reference set

If the reference set does not follow an existing reference set pattern, the additional attributes specific for this customized reference set should be included in the Descriptor reference set.

4. Add members to the reference set

Reference set members are added to the reference set, which includes specifying the attribute values for each reference set member.

 

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

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