This is the CodeSystem that contains codes in both ResearchSubjectMilestone (http://terminology.hl7.org/CodeSystem/research-subject-milestone) and ResearchSubjectMilestone (http://terminology.hl7.org/CodeSystem/research-subject-milestone).
Generated Narrative: CodeSystem 5b1132b8-51e9-46ac-8efa-9d1c907d9515-1449
This code system http://hl7.org/fhir/comparison/CodeSystem/5b1132b8-51e9-46ac-8efa-9d1c907d9515-1449
defines codes, but no codes are represented here