Here is the new topic for the FHIR contest:

CDA to FHIR data transformation 

iPhone can export health data to CDA, see the details. Transform this data into FHIR format using IRIS for Health and submit to the FHIR server.

Here is an example of how you can transform CDA to FHIR data using IRIS for HEalth. Tagging @Guillaume Rongier for more details. 

The main announcement is updated too.

A very helpful repository to generate synthetic FHIR compatible data shared by @Phillip Booth 
 

E.g. to generate data for 5 patients in an /output subfolder of a current folder call:

docker run --rm -v $PWD/output:/output --name synthea-docker intersystemsdc/irisdemo-base-synthea:version-1.3.4 -p 5

Which you can load then into IRIS for Health with:

zw ##class(HS.FHIRServer.Tools.DataLoader).SubmitResourceFiles("path/output", "FHIRNamespace", "/restapi/endpoint/fhir/r4")