This is the CodeSystem that contains codes in both US Public Health CodeSystem - Usage Context (http://hl7.org/fhir/us/ph-library/CodeSystem/us-ph-codesystem-usage-context) and US Public Health CodeSystem - Usage Context (http://hl7.org/fhir/us/ph-library/CodeSystem/us-ph-codesystem-usage-context).
Generated Narrative: CodeSystem b2445509-e923-4866-94cd-833e1378d96b-30
This code system http://hl7.org/fhir/comparison/CodeSystem/b2445509-e923-4866-94cd-833e1378d96b-30 defines codes, but no codes are represented here