<?xml version="1.0" encoding="UTF-8"?><CodeSystem xmlns="http://hl7.org/fhir"><id value="unknown-content-code"/><meta><lastUpdated value="2019-11-01T09:29:23.356+11:00"/></meta><text><status value="generated"/><div xmlns="http://www.w3.org/1999/xhtml"><h2>UnknownContentCode</h2><div><p>A code that indicates whether an application accepts unknown elements or extensions when reading resources.</p>
</div><p>This code system http://hl7.org/fhir/unknown-content-code 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">no<a name="unknown-content-code-no"> </a></td><td>Neither Elements or Extensions</td><td>The application does not accept either unknown elements or extensions.</td></tr><tr><td style="white-space:nowrap">extensions<a name="unknown-content-code-extensions"> </a></td><td>Unknown Extensions</td><td>The application accepts unknown extensions, but not unknown elements.</td></tr><tr><td style="white-space:nowrap">elements<a name="unknown-content-code-elements"> </a></td><td>Unknown Elements</td><td>The application accepts unknown elements, but not unknown extensions.</td></tr><tr><td style="white-space:nowrap">both<a name="unknown-content-code-both"> </a></td><td>Unknown Elements and Extensions</td><td>The application accepts unknown elements and extensions.</td></tr></table></div></text><url value="http://hl7.org/fhir/unknown-content-code"/><identifier><system value="urn:ietf:rfc:3986"/><value value="urn:oid:2.16.840.1.113883.4.642.4.197"/></identifier><version value="4.0.1"/><name value="UnknownContentCode"/><title value="UnknownContentCode"/><status value="draft"/><experimental value="false"/><date value="2019-11-01T09:29:23+11:00"/><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="A code that indicates whether an application accepts unknown elements or extensions when reading resources."/><caseSensitive value="true"/><valueSet value="http://hl7.org/fhir/ValueSet/unknown-content-code"/><content value="complete"/><concept><code value="no"/><display value="Neither Elements or Extensions"/><definition value="The application does not accept either unknown elements or extensions."/></concept><concept><code value="extensions"/><display value="Unknown Extensions"/><definition value="The application accepts unknown extensions, but not unknown elements."/></concept><concept><code value="elements"/><display value="Unknown Elements"/><definition value="The application accepts unknown elements, but not unknown extensions."/></concept><concept><code value="both"/><display value="Unknown Elements and Extensions"/><definition value="The application accepts unknown elements and extensions."/></concept></CodeSystem>