This is the ValueSet that contains codes in both SeverityObservationCode (https://smt.esante.gouv.fr/fhir/ValueSet/jdv-hl7-v3-SeverityObservationCode-cisis) and SeverityObservationCode (https://smt.esante.gouv.fr/fhir/ValueSet/jdv-hl7-v3-SeverityObservationCode-cisis).