Will provide guidance on the use of provenance when it sent along with the R/E observation.  Does provenance override the elements in the resource (e.g., source of the observation). Does US Core have any guidance – if so, include it in the IG. Examples of expected use of provenance – resource was received by a payer or provider from a provider on date resource was changed from FHIR version x.xx to y.yy on a date by  Source in observation is the original entity that reported the result Source in provenance is the organization that reported the resource Verify that this is consistent with FHIR provenance resource and US Core use of provenance