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 f90bd0a2-fe48-4d1e-ba12-6375efeecd69-825
This code system http://hl7.org/fhir/comparison/CodeSystem/f90bd0a2-fe48-4d1e-ba12-6375efeecd69-825 defines codes, but no codes are represented here