This is the ValueSet that contains codes in both Allergies & Intolerances - IPS (http://hl7.org/fhir/uv/ips/ValueSet/allergies-intolerances-uv-ips) 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).