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 99737e40-ad3a-46a8-9eaa-048706a5e684-750
This code system http://hl7.org/fhir/comparison/CodeSystem/99737e40-ad3a-46a8-9eaa-048706a5e684-750 defines codes, but no codes are represented here