<?xml version="1.0" encoding="UTF-8"?><CodeSystem xmlns="http://hl7.org/fhir"><id value="observation-range-category"/><meta><lastUpdated value="2026-03-16T22:59:53.445+00:00"/></meta><text><status value="generated"/><div xmlns="http://www.w3.org/1999/xhtml"><p class="res-header-id"><b>Generated Narrative: CodeSystem observation-range-category</b></p><a name="observation-range-category"> </a><a name="hcobservation-range-category"> </a><p>This case-sensitive code system <code>http://hl7.org/fhir/observation-range-category</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">reference<a name="observation-range-category-reference"> </a></td><td>reference range</td><td>Reference (Normal) Range for Ordinal and Continuous Observations.</td></tr><tr><td style="white-space:nowrap">critical<a name="observation-range-category-critical"> </a></td><td>critical range</td><td>Critical Range for Ordinal and Continuous Observations. Results outside this range are critical.</td></tr><tr><td style="white-space:nowrap">absolute<a name="observation-range-category-absolute"> </a></td><td>absolute range</td><td>Absolute Range for Ordinal and Continuous Observations. Results outside this range are not possible.</td></tr></table></div></text><extension url="http://hl7.org/fhir/StructureDefinition/structuredefinition-wg"><valueCode value="oo"/></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="1"/></extension><url value="http://hl7.org/fhir/observation-range-category"/><identifier><system value="urn:ietf:rfc:3986"/><value value="urn:oid:2.16.840.1.113883.4.642.4.1334"/></identifier><version value="6.0.0-ballot4"/><name value="ObservationRangeCategory"/><title value="Observation Range Category"/><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="Codes identifying the category of observation range."/><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/observation-range-category"/><content value="complete"/><concept><code value="reference"/><display value="reference range"/><definition value="Reference (Normal) Range for Ordinal and Continuous Observations."/></concept><concept><code value="critical"/><display value="critical range"/><definition value="Critical Range for Ordinal and Continuous Observations. Results outside this range are critical."/></concept><concept><code value="absolute"/><display value="absolute range"/><definition value="Absolute Range for Ordinal and Continuous Observations. Results outside this range are not possible."/></concept></CodeSystem>