This is the ValueSet that contains all the codes in Da Vinci Notification Transfer Event ValueSet (http://hl7.org/fhir/us/davinci-alerts/ValueSet/notification-transfer-event) and Da Vinci Notification Transfer Event ValueSet (http://hl7.org/fhir/us/davinci-alerts/ValueSet/notification-transfer-event). E.g. what you have to deal with if you get resources containing codes in either of them