{description: HL7-defined code system of conceptss that allow the specification of certain types of values within the date/time range. Used in HL7 Vesion 2 messaging in the QRF segment., package_name: hl7.terminology.r4b, name: DateTimeSelectionQualifier, type: null, package_version: 4.0.0, class: unknown, kind: null, url: 'http://terminology.hl7.org/CodeSystem/v2-0158', version: 2.1.0}