This is the CodeSystem that contains codes in both US Public Health Usage Context Type (http://hl7.org/fhir/us/ecr/CodeSystem/us-ph-usage-context-type) and US Public Health Usage Context Type (http://hl7.org/fhir/us/ecr/CodeSystem/us-ph-usage-context-type).
Generated Narrative: CodeSystem 53cc55e8-dbef-45a8-8e72-fd29f2324ee1-21
This code system http://hl7.org/fhir/comparison/CodeSystem/53cc55e8-dbef-45a8-8e72-fd29f2324ee1-21
defines codes, but no codes are represented here