Stream: implementers
Topic: Filters in a CodeSystem and ValueSets
Grigoreta Cojocar (Jul 24 2018 at 08:59):
Hello,
We are trying to implement the terminology part from FHIR, namely CodeSystems and ValueSets and we have a question related to the filters part.
In a CodeSystem we can define some filters (which have a code used for identification, at least one operator, a value and an optional description). When defining a ValueSet we may include/exclude concepts from a CodeSystem using filters, but in this case the filters are related to the properties of the concept from the CodeSystem (a filter from a valueset has a property code, an operator and a value). Where is the link between the filters defined in a CodeSystem and the filters used when defining a ValueSet? Is there a link/relation between them?
Thank you!
Grahame Grieve (Jul 24 2018 at 12:22):
yes. You can use the general filters that are defined for all code systems (only a very few) or you can use the filters defined by the code system itself
Grigoreta Cojocar (Jul 25 2018 at 09:09):
How do you specify that you want to use in a value set the filters defined by the code system?
Grahame Grieve (Jul 25 2018 at 12:46):
the value set uses the filters by code... I feel as though I haven't understood the question
Grigoreta Cojocar (Jul 25 2018 at 13:05):
Maybe...
In the ValueSet resource specification, when we use a filter, we have to give a property code, not a filter code. Or maybe I am the one who did not understand the specification.
Last updated: Apr 12 2022 at 19:14 UTC
