This is the ValueSet that contains all the codes in Episodicity ValueSet (http://hl7.org/fhir/uv/symptoms/ValueSet/openEHR-EHR-CLUSTER.symptom-sign.v2.at0175) and Episodicity ValueSet (http://hl7.org/fhir/uv/symptoms/ValueSet/openEHR-EHR-CLUSTER.symptom-sign.v2.at0175). E.g. what you have to deal with if you get resources containing codes in either of them