This is the CodeSystem that contains codes in both PHD Observation Categories Code System (http://hl7.org/fhir/uv/phd/CodeSystem/PhdObservationCategories) and PHD Observation Categories Code System (http://hl7.org/fhir/uv/phd/CodeSystem/PhdObservationCategories).
Generated Narrative: CodeSystem 5e7a8f24-fdc5-4dc2-9caf-8bb90d380e05-18
This code system http://hl7.org/fhir/comparison/CodeSystem/5e7a8f24-fdc5-4dc2-9caf-8bb90d380e05-18 defines codes, but no codes are represented here