"No alteplase" is an intended exposure concept that may be used in expressing what an Evidence is about.

<membership value="conceptual"/> <characteristic> <code> <text value="Defined by CodeableConcept"/> </code> <valueCodeableConcept> <coding> <system value="http://www.nlm.nih.gov/research/umls/rxnorm"/> <code value="8410"/> <display value="alteplase"/> </coding> </valueCodeableConcept> <exclude value="true"/> <description value="No alteplase"/> </characteristic> </Group> </contained> <extension url="http://hl7.org/fhir/StructureDefinition/structuredefinition-wg"> <valueCode value="cds"/> </extension> <name value="NoAlteplase"/> <title value="No Alteplase"/> <status value="draft"/> <publisher value="HL7 International / Clinical Decision Support"/> <contact> <telecom> <system value="url"/> <value value="http://www.hl7.org/Special/committees/dss"/> </telecom> </contact> <description value="no alteplase"/> <actual value="false"/> <definition> <reference> <reference value="#Definition-Group"/> </reference> </definition> <handling/> </EvidenceVariable>