This is the ValueSet that contains codes in both BeAllergyIntoleranceCode (https://www.ehealth.fgov.be/standards/fhir/allergy/ValueSet/be-allergyintolerancecode) and BeAllergyIntoleranceCode (https://www.ehealth.fgov.be/standards/fhir/allergy/ValueSet/be-allergyintolerancecode).