Union of http://hl7.org/fhir/ValueSet/substance-code and https://healthterminologies.gov.au/fhir/ValueSet/adverse-reaction-agent-1

This is the ValueSet that contains all the codes in Substance Code (http://hl7.org/fhir/ValueSet/substance-code) and Adverse Reaction Agent (https://healthterminologies.gov.au/fhir/ValueSet/adverse-reaction-agent-1). E.g. what you have to deal with if you get resources containing codes in either of them

CodeSystem

Generated Narrative: ValueSet d5179cf8-4e93-4360-8fd4-815edfd9222c-23

This value set includes codes based on the following rules: