Hi Bonnie FHIR team,

Can you please provide guidance on how Patient.extension can be tested in Bonnie FHIR v6.1.2? We are testing measure CMS249FHIR, which includes logic specification for patient race using Patient.extension. Thank you in advance!

//CMS249FHIR

define "Age Dependent Combination Risk Factors":

... union SDE."SDE Race" Race
where FHIRHelpers.ToCode ( Race ) ~ "White"

//SupplementalDataElementsFHIR4 v2.0 library

define "SDE Race":
(flatten (
Patient.extension Extension
where Extension.url = 'http://hl7.org/fhir/us/core/StructureDefinition/us-core-race'
return Extension.extension
)) E
where E.url = 'ombCategory'
or E.url = 'detailed'
return E.value as Coding

//Terminology

codesystem "CDCREC": 'http://cts.nlm.nih.gov/fhir/cs/cdcrec'

code "White": '2106-3' from "CDCREC" display 'White'