<?xml version="1.0" encoding="UTF-8"?><CodeSystem xmlns="http://hl7.org/fhir"><id value="identity-assuranceLevel"/><meta><lastUpdated value="2026-03-31T17:06:59.649+00:00"/></meta><text><status value="generated"/><div xmlns="http://www.w3.org/1999/xhtml"><p class="res-header-id"><b>Generated Narrative: CodeSystem identity-assuranceLevel</b></p><a name="identity-assuranceLevel"> </a><a name="hcidentity-assuranceLevel"> </a><p>This case-sensitive code system <code>http://hl7.org/fhir/identity-assuranceLevel</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">level1<a name="identity-assuranceLevel-level1"> </a></td><td>Level 1</td><td>Little or no confidence in the asserted identity's accuracy.</td></tr><tr><td style="white-space:nowrap">level2<a name="identity-assuranceLevel-level2"> </a></td><td>Level 2</td><td>Some confidence in the asserted identity's accuracy.</td></tr><tr><td style="white-space:nowrap">level3<a name="identity-assuranceLevel-level3"> </a></td><td>Level 3</td><td>High confidence in the asserted identity's accuracy.</td></tr><tr><td style="white-space:nowrap">level4<a name="identity-assuranceLevel-level4"> </a></td><td>Level 4</td><td>Very high confidence in the asserted identity's accuracy.</td></tr></table></div></text><extension url="http://hl7.org/fhir/StructureDefinition/structuredefinition-wg"><valueCode value="pa"/></extension><extension url="http://hl7.org/fhir/StructureDefinition/structuredefinition-standards-status"><valueCode value="normative"/></extension><extension url="http://hl7.org/fhir/StructureDefinition/structuredefinition-fmm"><valueInteger value="4"/></extension><url value="http://hl7.org/fhir/identity-assuranceLevel"/><identifier><system value="urn:ietf:rfc:3986"/><value value="urn:oid:2.16.840.1.113883.4.642.4.657"/></identifier><identifier><use value="old"/><system value="urn:ietf:rfc:3986"/><value value="urn:oid:2.16.840.1.113883.4.642.1.641"/></identifier><identifier><use value="old"/><system value="urn:ietf:rfc:3986"/><value value="urn:oid:2.16.840.1.113883.4.642.2.342"/></identifier><version value="6.0.0-ballot4"/><name value="IdentityAssuranceLevel"/><title value="Identity Assurance Level"/><status value="active"/><experimental value="false"/><date value="2021-01-05T10:01:24+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="The level of confidence that this link represents the same actual person, based on NIST Authentication Levels."/><jurisdiction><coding><system value="http://unstats.un.org/unsd/methods/m49/m49.htm"/><code value="001"/><display value="World"/></coding></jurisdiction><caseSensitive value="true"/><valueSet value="http://hl7.org/fhir/ValueSet/identity-assuranceLevel"/><content value="complete"/><concept><code value="level1"/><display value="Level 1"/><definition value="Little or no confidence in the asserted identity's accuracy."/></concept><concept><code value="level2"/><display value="Level 2"/><definition value="Some confidence in the asserted identity's accuracy."/></concept><concept><code value="level3"/><display value="Level 3"/><definition value="High confidence in the asserted identity's accuracy."/></concept><concept><code value="level4"/><display value="Level 4"/><definition value="Very high confidence in the asserted identity's accuracy."/></concept></CodeSystem>