Stream: implementers
Topic: FHIRPath for extensions
Richard Kavanagh (Jun 29 2020 at 16:43):
If I define a new SearchParameter for an extension of type coding on resource MedicationStatement, my understanding is that the expressions within it should be along the lines of
base = MedicationStatement
expression = MedicationStatement.extension.where(url = 'http://acme.health.org/ext1').extension.value.code
Now supposing I wanted to also use this same extension MedicationRequest, does this now become as below?
base = DomainResource
expression = (MedicationStatement.extension.where(url = 'http://acme.health.org/ext1').extension.value.code | MedicationRequest.extension.where(url = 'http://acme.health.org/ext1').extension.value.code)
Then finally, what would an expression for a complex extension look like if I wanted to target one of the inner extensions?
Grahame Grieve (Jun 29 2020 at 20:41):
yes to your second expressoin
Grahame Grieve (Jun 29 2020 at 20:41):
MedicationStatement.extension('http://acme.health.org/ext1').extension.value.code") is the same
Grahame Grieve (Jun 29 2020 at 20:41):
MedicationStatement.extension('http://acme.health.org/ext1').extension('inner').value.code
Richard Kavanagh (Jun 29 2020 at 21:00):
Thanks @Grahame Grieve
Last updated: Apr 12 2022 at 19:14 UTC
