<?xml version="1.0" encoding="UTF-8"?><CodeSystem xmlns="http://hl7.org/fhir"><id value="history-absent-reason"/><meta><lastUpdated value="2018-08-19T21:48:56.559+10:00"/></meta><text><status value="generated"/><div xmlns="http://www.w3.org/1999/xhtml"><h2>FamilyHistoryAbsentReason</h2><div><p>Codes describing the reason why a family member&#39;s history is not available.</p>
</div><p>This code system http://terminology.hl7.org/CodeSystem/history-absent-reason defines the following codes:</p><table class="codes"><tr><td style="white-space:nowrap"><b>Code</b></td><td><b>Display</b></td><td><b>Definition</b></td></tr><tr><td style="white-space:nowrap">subject-unknown<a name="history-absent-reason-subject-unknown"> </a></td><td>Subject Unknown</td><td>Patient does not know the subject, e.g. the biological parent of an adopted patient.</td></tr><tr><td style="white-space:nowrap">withheld<a name="history-absent-reason-withheld"> </a></td><td>Information Withheld</td><td>The patient withheld or refused to share the information.</td></tr><tr><td style="white-space:nowrap">unable-to-obtain<a name="history-absent-reason-unable-to-obtain"> </a></td><td>Unable To Obtain</td><td>Information cannot be obtained; e.g. unconscious patient.</td></tr><tr><td style="white-space:nowrap">deferred<a name="history-absent-reason-deferred"> </a></td><td>Deferred</td><td>Patient does not have the information now, but can provide the information at a later date.</td></tr></table></div></text><extension url="http://hl7.org/fhir/StructureDefinition/structuredefinition-wg"><valueCode value="pc"/></extension><extension url="http://hl7.org/fhir/StructureDefinition/structuredefinition-standards-status"><valueString value="Draft"/></extension><extension url="http://hl7.org/fhir/StructureDefinition/structuredefinition-fmm"><valueInteger value="1"/></extension><url value="http://terminology.hl7.org/CodeSystem/history-absent-reason"/><identifier><system value="urn:ietf:rfc:3986"/><value value="urn:oid:2.16.840.1.113883.4.642.1.1094"/></identifier><version value="3.5a.0"/><name value="FamilyHistoryAbsentReason"/><title value="FamilyHistoryAbsentReason"/><status value="draft"/><experimental value="false"/><date value="2018-08-19T21:48:56+10:00"/><publisher value="HL7 (FHIR Project)"/><contact><telecom><system value="url"/><value value="http://hl7.org/fhir"/></telecom><telecom><system value="email"/><value value="fhir@lists.hl7.org"/></telecom></contact><description value="Codes describing the reason why a family member&#39;s history is not available."/><caseSensitive value="true"/><valueSet value="http://hl7.org/fhir/ValueSet/history-absent-reason"/><content value="complete"/><concept><code value="subject-unknown"/><display value="Subject Unknown"/><definition value="Patient does not know the subject, e.g. the biological parent of an adopted patient."/></concept><concept><code value="withheld"/><display value="Information Withheld"/><definition value="The patient withheld or refused to share the information."/></concept><concept><code value="unable-to-obtain"/><display value="Unable To Obtain"/><definition value="Information cannot be obtained; e.g. unconscious patient."/></concept><concept><code value="deferred"/><display value="Deferred"/><definition value="Patient does not have the information now, but can provide the information at a later date."/></concept></CodeSystem>