Carl Leitner recently posed a question regarding hierarchies in ValueSets. Is it possible to create/define a ValueSet that includes hierarchical components or are hierarchical relationships only possible when defining a VS from a code system?
Jack
Hi jack
My response to this is that it depends what you mean by “hierarchies”. It’s not generally appropriate to assert subsumption relationships in a valueset. More generally, it’s not a good idea to make statements about meaning in valuesets - meaning should be in the code system.
On the other hand, there’s another use for hierarchy which is navigational assistance - you’re not making any claim about meaning, just presentation. It’s perfectly appropriate for value sets to do this.
The FHIR value set doesn’t provide out of the box support for this because our observation is that this is pretty unusual, but it can be done with extensions
Grahame
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On Wednesday, December 10, 2014, Jack Bowie jbowie@apelon.com wrote:
Carl Leitner recently posed a question regarding hierarchies in ValueSets. Is it possible to create/define a ValueSet that includes hierarchical components or are hierarchical relationships only possible when defining a VS from a code system?
Jack
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Grahame,
Agree completely. Thanks for the clarification.
Jack
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My response to this is that it depends what you mean by “hierarchies”. It’s not generally appropriate to assert subsumption relationships in a valueset. More generally, it’s not a good idea to make statements about meaning in valuesets
- meaning should be in the code system.
On the other hand, there’s another use for hierarchy which is navigational assistance - you’re not making any claim about meaning, just presentation. It’s perfectly appropriate for value sets to do this.
The FHIR value set doesn’t provide out of the box support for this because our observation is that this is pretty unusual, but it can be done with extensions
Grahame
On Wednesday, December 10, 2014, Jack Bowie jbowie@apelon.com wrote:
Carl Leitner recently posed a question regarding hierarchies in ValueSets. Is it possible to create/define a ValueSet that includes hierarchical components or are hierarchical relationships
only possible when defining a VS from a code system?
Jack
–
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http://www.healthintersections.com.au /
grahame@healthintersections.com.au / +61 411 867 065
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