Union of http://terminology.hl7.org/CodeSystem/time-period-ranges and http://terminology.hl7.org/CodeSystem/time-period-ranges

This is the CodeSystem that contains all the codes in Time Period Ranges (http://terminology.hl7.org/CodeSystem/time-period-ranges) and Time Period Ranges (http://terminology.hl7.org/CodeSystem/time-period-ranges). E.g. what you have to deal with if you get resources containing codes in either of them

CodeSystem

Generated Narrative: CodeSystem 92b1373f-8aa2-4cd6-a494-1d9ca4d268db-851

This code system http://hl7.org/fhir/comparison/CodeSystem/92b1373f-8aa2-4cd6-a494-1d9ca4d268db-851 defines codes, but no codes are represented here

Code