"Dead or functionally dependent at 90 days" is an outcome used in expressing what an Evidence is about.

<type value="person"/><membership value="definitional"/><combinationMethod value="any-of"/><characteristic><code><coding><system value="http://snomed.info/sct"/><code value="260905004"/><display value="Condition"/></coding></code><valueCodeableConcept><coding><system value="http://snomed.info/sct"/><code value="419099009"/><display value="Dead (finding)"/></coding></valueCodeableConcept><exclude value="false"/><description value="dead at 90 days"/><timing><contextCode><coding><system value="http://hl7.org/fhir/evidence-variable-event"/><code value="study-start"/><display value="Study Start"/></coding></contextCode><offsetDuration><value value="90"/><unit value="days"/><system value="http://unitsofmeasure.org"/><code value="d"/></offsetDuration></timing></characteristic><characteristic><code><coding><system value="http://snomed.info/sct"/><code value="260905004"/><display value="Condition"/></coding></code><valueCodeableConcept><coding><system value="http://snomed.info/sct"/><code value="718705001"/><display value="Functionally dependent (finding)"/></coding></valueCodeableConcept><exclude value="false"/><description value="functionally dependent at 90 days"/><timing><contextCode><coding><system value="http://hl7.org/fhir/evidence-variable-event"/><code value="study-start"/><display value="Study Start"/></coding></contextCode><offsetDuration><value value="90"/><unit value="days"/><system value="http://unitsofmeasure.org"/><code value="d"/></offsetDuration></timing></characteristic></Group></contained><extension url="http://hl7.org/fhir/StructureDefinition/structuredefinition-wg"><valueCode value="cds"/></extension><name value="DeadOrFunctionallyDependentAt90Days"/><title value="Dead or functionally dependent at 90 days"/><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="Dead or functionally dependent at 90 days"/><actual value="false"/><definition><reference><reference value="#Definition-Group"/></reference></definition><handling/></EvidenceVariable>