<?xml version="1.0" encoding="UTF-8"?><CodeSystem xmlns="http://hl7.org/fhir"><id value="observation-status"/><meta><lastUpdated value="2026-04-03T20:06:10.198+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-status</b></p><a name="observation-status"> </a><a name="hcobservation-status"> </a><p>This case-sensitive code system <code>http://hl7.org/fhir/observation-status</code> defines the following codes in a Is-A hierarchy:</p><table class="codes"><tr><td><b>Lvl</b></td><td style="white-space:nowrap"><b>Code</b></td><td><b>Display</b></td><td><b>Definition</b></td></tr><tr><td>1</td><td style="white-space:nowrap">registered<a name="observation-status-registered"> </a></td><td>Registered</td><td><div><p>The existence of the observation is registered, but there is no result yet available.</p>
</div></td></tr><tr><td>1</td><td style="white-space:nowrap">specimen-in-process<a name="observation-status-specimen-in-process"> </a></td><td>Specimen-in-Process</td><td><div><p>The specimen being processed in the laboratory but no results are available yet.</p>
</div></td></tr><tr><td>1</td><td style="white-space:nowrap">preliminary<a name="observation-status-preliminary"> </a></td><td>Preliminary</td><td><div><p>This is an initial or interim observation: data may be incomplete or unverified.</p>
</div></td></tr><tr><td>1</td><td style="white-space:nowrap">final<a name="observation-status-final"> </a></td><td>Final</td><td><div><p>The observation is complete and there are no further actions needed. Additional information such &quot;released&quot;, &quot;signed&quot;, etc. would be represented using <a href="provenance.html">Provenance</a> which provides not only the act but also the actors and dates and other related data. These act states would be associated with an observation status of <code>preliminary</code> until they are all completed and then a status of <code>final</code> would be applied. Also, this status applies for situations where there is a &quot;not-asked&quot; code for dataAbsentReason.</p>
</div></td></tr><tr><td>1</td><td style="white-space:nowrap">amended<a name="observation-status-amended"> </a></td><td>Amended</td><td><div><p>Subsequent to being Final, the observation has been modified. This includes updates/new information and corrections.</p>
</div></td></tr><tr><td>2</td><td style="white-space:nowrap">  corrected<a name="observation-status-corrected"> </a></td><td>Corrected</td><td><div><p>Subsequent to being Final, the observation has been modified to correct an error in the original test result(s).</p>
</div></td></tr><tr><td>2</td><td style="white-space:nowrap">  appended<a name="observation-status-appended"> </a></td><td>Appended</td><td><div><p>Subsequent to being Final, the observation has been modified to include additional information, with no changes to the original test result(s).</p>
</div></td></tr><tr><td>1</td><td style="white-space:nowrap">cancelled<a name="observation-status-cancelled"> </a></td><td>Cancelled</td><td><div><p>The observation is unavailable because the measurement was not started or not completed (also sometimes called &quot;aborted&quot;). A data absent reason should be present providing clarity as to why there is no value on an Observation instance</p>
</div></td></tr><tr><td>1</td><td style="white-space:nowrap">entered-in-error<a name="observation-status-entered-in-error"> </a></td><td>Entered in Error</td><td><div><p>The observation has been withdrawn following previous final release.  This electronic record should never have existed, though it is possible that real-world decisions were based on it. (If real-world activity has occurred, the status should be &quot;cancelled&quot; rather than &quot;entered-in-error&quot;.).</p>
</div></td></tr><tr><td>1</td><td style="white-space:nowrap">unknown<a name="observation-status-unknown"> </a></td><td>Unknown</td><td><div><p>The authoring/source system does not know which of the status values currently applies for this observation. Note: This concept is not to be used for &quot;other&quot; - one of the listed statuses is presumed to apply, but the authoring/source system does not know which.</p>
</div></td></tr><tr><td>1</td><td style="white-space:nowrap">cannot-be-obtained<a name="observation-status-cannot-be-obtained"> </a></td><td>Cannot be obtained</td><td><div><p>The observation cannot be obtained.</p>
</div></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="5"/></extension><url value="http://hl7.org/fhir/observation-status"/><identifier><system value="urn:ietf:rfc:3986"/><value value="urn:oid:2.16.840.1.113883.4.642.4.401"/></identifier><identifier><use value="old"/><system value="urn:ietf:rfc:3986"/><value value="urn:oid:2.16.840.1.113883.4.642.1.388"/></identifier><identifier><use value="old"/><system value="urn:ietf:rfc:3986"/><value value="urn:oid:2.16.840.1.113883.4.642.2.219"/></identifier><version value="6.0.0-ballot4"/><name value="ObservationStatus"/><title value="Observation Status"/><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 providing the status of an observation."/><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-status"/><hierarchyMeaning value="is-a"/><content value="complete"/><concept><code value="registered"/><display value="Registered"/><definition value="The existence of the observation is registered, but there is no result yet available."/></concept><concept><code value="specimen-in-process"/><display value="Specimen-in-Process"/><definition value="The specimen being processed in the laboratory but no results are available yet."/></concept><concept><code value="preliminary"/><display value="Preliminary"/><definition value="This is an initial or interim observation: data may be incomplete or unverified."/></concept><concept><code value="final"/><display value="Final"/><definition value="The observation is complete and there are no further actions needed. Additional information such &quot;released&quot;, &quot;signed&quot;, etc. would be represented using [Provenance](provenance.html) which provides not only the act but also the actors and dates and other related data. These act states would be associated with an observation status of `preliminary` until they are all completed and then a status of `final` would be applied. Also, this status applies for situations where there is a &quot;not-asked&quot; code for dataAbsentReason."/></concept><concept><code value="amended"/><display value="Amended"/><definition value="Subsequent to being Final, the observation has been modified. This includes updates/new information and corrections."/><concept><code value="corrected"/><display value="Corrected"/><definition value="Subsequent to being Final, the observation has been modified to correct an error in the original test result(s)."/></concept><concept><code value="appended"/><display value="Appended"/><definition value="Subsequent to being Final, the observation has been modified to include additional information, with no changes to the original test result(s)."/></concept></concept><concept><code value="cancelled"/><display value="Cancelled"/><definition value="The observation is unavailable because the measurement was not started or not completed (also sometimes called &quot;aborted&quot;). A data absent reason should be present providing clarity as to why there is no value on an Observation instance"/></concept><concept><code value="entered-in-error"/><display value="Entered in Error"/><definition value="The observation has been withdrawn following previous final release.  This electronic record should never have existed, though it is possible that real-world decisions were based on it. (If real-world activity has occurred, the status should be &quot;cancelled&quot; rather than &quot;entered-in-error&quot;.)."/></concept><concept><code value="unknown"/><display value="Unknown"/><definition value="The authoring/source system does not know which of the status values currently applies for this observation. Note: This concept is not to be used for &quot;other&quot; - one of the listed statuses is presumed to apply, but the authoring/source system does not know which."/></concept><concept><code value="cannot-be-obtained"/><display value="Cannot be obtained"/><definition value="The observation cannot be obtained."/></concept></CodeSystem>