This is the ValueSet that contains all the codes in Excluded Symptom ValueSet (http://hl7.org/fhir/uv/symptoms/ValueSet/openEHR-EHR-CLUSTER.exclusion-symptom-sign.v0.at0002) and Excluded Symptom ValueSet (http://hl7.org/fhir/uv/symptoms/ValueSet/openEHR-EHR-CLUSTER.exclusion-symptom-sign.v0.at0002). E.g. what you have to deal with if you get resources containing codes in either of them