This is the ValueSet that contains all the codes in CDex Data Request Task Code Value Set (http://hl7.org/fhir/us/davinci-cdex/ValueSet/cdex-data-request-task-code) and CDex Data Request Task Code Value Set (http://hl7.org/fhir/us/davinci-cdex/ValueSet/cdex-data-request-task-code). E.g. what you have to deal with if you get resources containing codes in either of them