This is the ValueSet that contains all the codes in AllergyIntolerance substance exposure risk valueset (http://hl7.org/fhir/ValueSet/allerg-intol-substance-exp-risk) and AllergyIntolerance substance exposure risk valueset (http://hl7.org/fhir/ValueSet/allerg-intol-substance-exp-risk). E.g. what you have to deal with if you get resources containing codes in either of them