Stream: terminology
Topic: Null flavor extension
Jay Lyle (Jan 23 2020 at 23:17):
Extension http://hl7.org/fhir/StructureDefinition/iso21090-nullFlavor
Provides a list of V3 null flavors: NI | OTH | NINF | PINF | UNK | ASKU | NAV | NASK | TRC | MSK | NA | QS.
We want to support "Patient declined to answer" and "Unknown by patient." The standard "UNK" seems too broad, but "ASKU" is also ambiguous: asked but unknown by patient or asked and still unknown because not answered? "MSK" may be correct for the first one, but still lossy. It's possible we could stipulate more precise meanings in our context, but that seems arbitrary. So we plan to use our more precise values.
Does anyone else have interest in a null flavor extension with a more flexible binding?
Lloyd McKenzie (Jan 23 2020 at 23:38):
data-absent-reason is the extension you should focus on. 21090-nullFlavor is really just for porting v3 data
Last updated: Apr 12 2022 at 19:14 UTC
