<status value="active"/> <experimental value="false"/> <publisher value="HL7, International"/> <description value="Types used with Subscriptions"/> <immutable value="true"/> <compose> <include> <system value="http://hl7.org/fhir/fhir-types"/> <concept> <code value="Reference"/> </concept> </include> <include> <valueSet value="http://hl7.org/fhir/ValueSet/version-independent-resource-types"/> </include> </compose> </ValueSet>

This value set includes codes based on the following rules:

Include these codes as defined in http://hl7.org/fhir/fhir-types

Code	Display	Definition
Reference	Reference	Reference Type: A reference from one resource to another.