When the value set version becomes Active and is available for use
This is the first date-time when the value set version becomes active, so this value is present on Inactive value set versions as well. The start Date_time is expected to be as of 0001 UTC of the Effective Date.
Validate
API
Project FHIR API
The project FHIR API endpoint is not yet available for DSTU2 FHIR version.
Simplifier FHIR API
The global FHIR API endpoint is not yet available for DSTU2 FHIR version.
