Union of http://hl7.org/fhir/ValueSet/allergyintolerance-code and http://cts.nlm.nih.gov/fhir/ValueSet/2.16.840.1.113762.1.4.1267.43

This is the ValueSet that contains all the codes in AllergyIntolerance Substance/Product, Condition and Negation Codes (http://hl7.org/fhir/ValueSet/allergyintolerance-code) and Allergen Concepts (Medications, Foods, and Environmental Substances) including refutations. (http://cts.nlm.nih.gov/fhir/ValueSet/2.16.840.1.113762.1.4.1267.43). E.g. what you have to deal with if you get resources containing codes in either of them

CodeSystem

Generated Narrative: ValueSet 324e5835-15ff-4108-93f7-804778d9889c-68

This value set includes codes based on the following rules: