SNOMED Documentation Search


  

Introduction

The  | LOINC Term to Expression reference set|  is an instance of a  | Code to expression type reference set| .  The general specification of the reference set type is included below and this is followed by specific notes on the | LOINC Term to Expression reference set| .

<h1 id="id-4.2.2LOINCTermtoExpressionReferenceSet-CodetoExpressionTypeReferenceSet"><a href="/display/DOCRELFMT/5.2.3.5+Code+to+Expression+Reference+Set">Code to Expression Type Reference Set</a></h1><p><span class="conf-macro output-inline" data-hasbody="false" data-macro-name="excerpt-include"><h1 id="id-4.2.2LOINCTermtoExpressionReferenceSet-Purpose">Purpose</h1><p>The&nbsp; <a href="http://snomed.info/id/705109006" title="705109006 | Code to expression type reference set |" class="external-link conf-macro output-inline" rel="nofollow" data-hasbody="false" data-macro-name="concept"> <span style="color: #606060;" class="sctid">705109006</span> <span style="color: #00ccff;" class="sctpipe">|</span> <span style="color: #000000;" class="sctid">Code to expression type reference set</span><span style="color: #00ccff;" class="sctpipe">|</span></a> &nbsp;is designed to enable associations between codes in another code system&nbsp;<span class="conf-macro output-inline" data-hasbody="false" data-macro-name="gloss">(<a href="https://confluence.ihtsdotools.org/display/DOCGLOSS/other-code" title="Glossary link: other-codes" rel="nofollow">other-codes</a>)</span>&nbsp;and&nbsp;<a href="https://confluence.ihtsdotools.org/display/DOCGLOSS/SNOMED+CT+concept" title="Glossary link: SNOMED CT concepts" rel="nofollow" class="conf-macro output-inline" data-hasbody="false" data-macro-name="gloss">SNOMED CT concepts</a>, where the following constraints apply:</p><ol><li>Some of the&nbsp;<a href="https://confluence.ihtsdotools.org/display/DOCGLOSS/other-code" title="Glossary link: other-codes" rel="nofollow" class="conf-macro output-inline" data-hasbody="false" data-macro-name="gloss">other-codes</a>&nbsp;cannot be mapped to an individual SNOMED CT&nbsp;<a href="https://confluence.ihtsdotools.org/display/DOCGLOSS/concept" title="Glossary link: concept" rel="nofollow" class="conf-macro output-inline" data-hasbody="false" data-macro-name="gloss">concept</a>.</li><li>Licensing conditions (or other considerations) prevent addition of new SNOMED CT concepts to represent the same meaning as the&nbsp;<a href="https://confluence.ihtsdotools.org/display/DOCGLOSS/other-code" title="Glossary link: other-codes" rel="nofollow" class="conf-macro output-inline" data-hasbody="false" data-macro-name="gloss">other-codes</a>.</li><li>The&nbsp;<a href="https://confluence.ihtsdotools.org/display/DOCGLOSS/other-code" title="Glossary link: other-codes" rel="nofollow" class="conf-macro output-inline" data-hasbody="false" data-macro-name="gloss">other-codes</a>&nbsp;can be logically defined using the&nbsp;<a href="https://confluence.ihtsdotools.org/display/DOCGLOSS/SNOMED+concept+model" title="Glossary link: SNOMED concept model" rel="nofollow" class="conf-macro output-inline" data-hasbody="false" data-macro-name="gloss">SNOMED concept model</a>&nbsp;to represent the same meaning&nbsp;<span class="conf-macro output-inline" data-hasbody="false" data-macro-name="gloss">(<a href="https://confluence.ihtsdotools.org/display/DOCGLOSS/sufficiently+defined" title="Glossary link: sufficiently defined" rel="nofollow">sufficiently defined</a>)</span>&nbsp;or a similar though less specific meaning&nbsp;<span class="conf-macro output-inline" data-hasbody="false" data-macro-name="gloss">(<a href="https://confluence.ihtsdotools.org/display/DOCGLOSS/primitive" title="Glossary link: primitive" rel="nofollow">primitive</a>)</span>.</li><li>Other requirements similar for those applicable to mapping may also apply including:<ol><li>An indication of the degree of correlation between the&nbsp;&nbsp;<a href="https://confluence.ihtsdotools.org/display/DOCGLOSS/other-code" title="Glossary link: other-code" rel="nofollow" class="conf-macro output-inline" data-hasbody="false" data-macro-name="gloss">other-code</a>&nbsp;and the SNOMED CT expression.</li><li>An indication of whether the&nbsp;<a href="https://confluence.ihtsdotools.org/display/DOCGLOSS/other-code" title="Glossary link: other-code" rel="nofollow" class="conf-macro output-inline" data-hasbody="false" data-macro-name="gloss">other-code</a>&nbsp;was created before any single concept representation of that meaning in SNOMED CT or whether the single concept representation in SNOMED CT predated the creation of the association.</li></ol></li></ol><h1 id="id-4.2.2LOINCTermtoExpressionReferenceSet-DataStructure">Data Structure</h1><p>The general approach to the above requirements is to associate each of the&nbsp;<a href="https://confluence.ihtsdotools.org/display/DOCGLOSS/other-code" title="Glossary link: other-codes" rel="nofollow" class="conf-macro output-inline" data-hasbody="false" data-macro-name="gloss">other-codes</a>&nbsp;with a representation of the same logic based definition as would have been applied to a SNOMED CT concept with that meaning. However, since the&nbsp;&nbsp;<a href="https://confluence.ihtsdotools.org/display/DOCGLOSS/other-code" title="Glossary link: other-code" rel="nofollow" class="conf-macro output-inline" data-hasbody="false" data-macro-name="gloss">other-code</a>&nbsp;are not identified by an&nbsp;&nbsp;<a href="https://confluence.ihtsdotools.org/display/DOCRELFMT/SCTID+(data+type)" title="Reference term: SCTID (data type)" rel="nofollow" class="conf-macro output-inline" data-hasbody="false" data-macro-name="specref">SCTID</a>,&nbsp;the logical definition cannot be represented using&nbsp;&nbsp;<a href="https://confluence.ihtsdotools.org/display/DOCGLOSS/defining+relationship" title="Glossary link: defining relationships" rel="nofollow" class="conf-macro output-inline" data-hasbody="false" data-macro-name="gloss">defining relationships</a>. There are two potential approaches to this, one would be to use a general purpose description logic language (e.g.&nbsp;&nbsp;<a href="https://confluence.ihtsdotools.org/display/DOCGLOSS/OWL" title="Glossary link: OWL" rel="nofollow" class="conf-macro output-inline" data-hasbody="false" data-macro-name="gloss">OWL</a>)&nbsp;and the other is to use a&nbsp;<a href="https://confluence.ihtsdotools.org/display/DOCGLOSS/SNOMED+CT+expression" title="Glossary link: SNOMED CT expression" rel="nofollow" class="conf-macro output-inline" data-hasbody="false" data-macro-name="gloss">SNOMED CT expression</a>&nbsp;to represent each definition. The&nbsp; <a href="http://snomed.info/id/705109006" title="705109006 | Code to expression type reference set |" class="external-link conf-macro output-inline" rel="nofollow" data-hasbody="false" data-macro-name="concept"> <span style="color: #00ccff;" class="sctpipe">|</span> <span style="color: #000000;" class="sctid">Code to expression type reference set</span><span style="color: #00ccff;" class="sctpipe">|</span></a> &nbsp;is designed to support the expression-based approach. </p><p class="figure-caption conf-macro output-inline" style="color: #808080; margin: 0px 0px 5px 10px; padding-top: 20px; font-family: 'Open Sans', sans-serif !important; font-size: 14px; font-weight: bold;" id="Table-simple-map-reference-set-data-structure" data-hasbody="true" data-macro-name="caption-label">Table 5.2.3.5-1: Code to Expression Reference Set - Data structure</p><p></p><p class="auto-cursor-target"> </p><div class="$paramSizeHtml conf-macro output-inline" data-hasbody="false" data-macro-name="refset-spec-table"> <div class="table-wrap"><div class="table-wrap"><table class="fixed-table wrapped confluenceTable"><colgroup span="1"><col style="width: 225.0px;" span="1"/><col style="width: 78.0px;" span="1"/><col style="width: 825.0px;" span="1"/><col style="width: 76.0px;" span="1"/><col style="width: 96.0px;" span="1"/></colgroup><tbody><tr><td class="highlight-grey confluenceTd" colspan="1" rowspan="1" data-highlight-colour="grey"><p><strong>Field</strong></p></td><td class="highlight-grey confluenceTd" colspan="1" rowspan="1" data-highlight-colour="grey"><p><strong>Data type</strong></p></td><td class="highlight-grey confluenceTd" colspan="1" rowspan="1" data-highlight-colour="grey"><p><strong>Purpose</strong></p></td><td class="highlight-grey confluenceTd" style="text-align: center;" colspan="1" rowspan="1" data-highlight-colour="grey"><div class="content-wrapper"><p><strong><a style="&quot;color:#202020;&quot;" href="https://confluence.ihtsdotools.org/display/DOCGLOSS/Mutable" title="Glossary link: Mutable" rel="nofollow" class="conf-macro output-inline" data-hasbody="false" data-macro-name="gloss">Mutable</a></strong></p></div></td><td class="highlight-grey confluenceTd" style="text-align: center;" colspan="1" rowspan="1" data-highlight-colour="grey"><strong>Part of Primary Key</strong></td></tr><tr><td colspan="1" rowspan="1" class="confluenceTd"><p>id</p></td><td colspan="1" rowspan="1" class="confluenceTd"><div class="content-wrapper"><p><a href="https://confluence.ihtsdotools.org/display/DOCRELFMT/UUID+(data+type)" title="Reference term: UUID ((data type))" rel="nofollow" class="conf-macro output-inline" data-hasbody="false" data-macro-name="specref">UUID</a></p></div></td><td colspan="1" rowspan="1" class="confluenceTd"><div class="content-wrapper"><p>A 128 bit unsigned <a href="https://confluence.ihtsdotools.org/display/DOCRELFMT/Integer+(data+type)" title="Reference term: Integer ((data type))" rel="nofollow" class="conf-macro output-inline" data-hasbody="false" data-macro-name="specref">Integer</a>, uniquely identifying this <a href="https://confluence.ihtsdotools.org/display/DOCGLOSS/reference+set+member" title="Glossary link: reference set member" rel="nofollow" class="conf-macro output-inline" data-hasbody="false" data-macro-name="gloss">reference set member</a>.</p><p>Different versions of a <em>reference set member</em> share the same <a href="https://confluence.ihtsdotools.org/display/DOCRELFMT/id+(field)" title="Reference term: id ((field))" rel="nofollow" class="conf-macro output-inline" data-hasbody="false" data-macro-name="specref">id</a> but have different <a href="https://confluence.ihtsdotools.org/display/DOCRELFMT/effectiveTime+(field)" title="Reference term: effectiveTime ((field))" rel="nofollow" class="conf-macro output-inline" data-hasbody="false" data-macro-name="specref">effectiveTime</a>. This allows a <em>reference set member</em> to be modified or made <a href="https://confluence.ihtsdotools.org/display/DOCRELFMT/inactive+(field)" title="Reference term: inactive (field)" rel="nofollow" class="conf-macro output-inline" data-hasbody="false" data-macro-name="specref">inactive</a> (i.e. removed from the active set) at a specified time. </p><div id="mark_id" style="display:none" class="conf-macro output-inline" data-hasbody="false" data-macro-name="bookmarker"><br/></div><p> </p></div></td><td class="highlight-red confluenceTd" style="text-align: center;" colspan="1" rowspan="1" data-highlight-colour="red">NO</td><td class="highlight-green confluenceTd" style="text-align: center;" colspan="1" rowspan="1" data-highlight-colour="green">YES (Full /Snapshot)</td></tr><tr><td colspan="1" rowspan="1" class="confluenceTd"><div class="content-wrapper"><p><a href="https://confluence.ihtsdotools.org/display/DOCRELFMT/effectiveTime+(field)" title="Reference term: effectiveTime ((field))" rel="nofollow" class="conf-macro output-inline" data-hasbody="false" data-macro-name="specref">effectiveTime</a></p></div></td><td colspan="1" rowspan="1" class="confluenceTd"><div class="content-wrapper"><p><a href="https://confluence.ihtsdotools.org/display/DOCRELFMT/Time+(data+type)" title="Reference term: Time ((data type))" rel="nofollow" class="conf-macro output-inline" data-hasbody="false" data-macro-name="specref">Time</a></p></div></td><td colspan="1" rowspan="1" class="confluenceTd"><div class="content-wrapper"><p>The inclusive date or time at which this version of the identified <a href="https://confluence.ihtsdotools.org/display/DOCGLOSS/reference+set+member" title="Glossary link: reference set member" rel="nofollow" class="conf-macro output-inline" data-hasbody="false" data-macro-name="gloss">reference set member</a> became the current version.</p><p><strong>Note</strong><span>: In distribution files the effectiveTime should follow the short ISO date format (</span><em><span style="color: rgb(122,134,154);">YYYYMM<em><span>DD</span></em></span></em><span>) and should not include the hours, minutes, seconds or timezone indicator.</span></p><p>The current version of this <a href="https://confluence.ihtsdotools.org/display/DOCGLOSS/reference+set+member" title="Glossary link: reference set member" rel="nofollow" class="conf-macro output-inline" data-hasbody="false" data-macro-name="gloss">reference set member</a> at time <em>T</em> is the version with the most recent <a href="https://confluence.ihtsdotools.org/display/DOCRELFMT/effectiveTime+(field)" title="Reference term: effectiveTime ((field))" rel="nofollow" class="conf-macro output-inline" data-hasbody="false" data-macro-name="specref">effectiveTime</a> prior to or equal to time <em>T</em> . </p><div id="mark_effectivetime" style="display:none" class="conf-macro output-inline" data-hasbody="false" data-macro-name="bookmarker"><br/></div><p> </p></div></td><td class="highlight-green confluenceTd" style="text-align: center;" colspan="1" rowspan="1" data-highlight-colour="green">YES</td><td class="highlight-green confluenceTd" style="text-align: center;" colspan="1" rowspan="1" data-highlight-colour="green"><p style="text-align: center;">YES (Full)</p><p style="text-align: center;">Optional (Snapshot)&nbsp;</p></td></tr><tr><td colspan="1" rowspan="1" class="confluenceTd"><div class="content-wrapper"><p><a href="https://confluence.ihtsdotools.org/display/DOCRELFMT/active+(field)" title="Reference term: active ((field))" rel="nofollow" class="conf-macro output-inline" data-hasbody="false" data-macro-name="specref">active</a></p></div></td><td colspan="1" rowspan="1" class="confluenceTd"><div class="content-wrapper"><p><a href="https://confluence.ihtsdotools.org/display/DOCRELFMT/Boolean+(data+type)" title="Reference term: Boolean ((data type))" rel="nofollow" class="conf-macro output-inline" data-hasbody="false" data-macro-name="specref">Boolean</a></p></div></td><td colspan="1" rowspan="1" class="confluenceTd"><div class="content-wrapper"><p>The state of the identified <a href="https://confluence.ihtsdotools.org/display/DOCGLOSS/reference+set+member" title="Glossary link: reference set member" rel="nofollow" class="conf-macro output-inline" data-hasbody="false" data-macro-name="gloss">reference set member</a> as at the specified <a href="https://confluence.ihtsdotools.org/display/DOCRELFMT/effectiveTime+(field)" title="Reference term: effectiveTime ((field))" rel="nofollow" class="conf-macro output-inline" data-hasbody="false" data-macro-name="specref">effectiveTime</a> .</p><p>If <a href="https://confluence.ihtsdotools.org/display/DOCRELFMT/active+(field)" title="Reference term: active ((field))" rel="nofollow" class="conf-macro output-inline" data-hasbody="false" data-macro-name="specref">active</a> = 1 (true) the <a href="https://confluence.ihtsdotools.org/display/DOCGLOSS/reference+set+member" title="Glossary link: reference set member" rel="nofollow" class="conf-macro output-inline" data-hasbody="false" data-macro-name="gloss">reference set member</a> is part of the current version of the set, if <a href="https://confluence.ihtsdotools.org/display/DOCRELFMT/active+(field)" title="Reference term: active ((field))" rel="nofollow" class="conf-macro output-inline" data-hasbody="false" data-macro-name="specref">active</a> = 0 (false) the <a href="https://confluence.ihtsdotools.org/display/DOCGLOSS/reference+set+member" title="Glossary link: reference set member" rel="nofollow" class="conf-macro output-inline" data-hasbody="false" data-macro-name="gloss">reference set member</a> is not part of the current version of the set. </p><div id="mark_active" style="display:none" class="conf-macro output-inline" data-hasbody="false" data-macro-name="bookmarker"><br/></div><p> </p></div></td><td class="highlight-green confluenceTd" style="text-align: center;" colspan="1" rowspan="1" data-highlight-colour="green">YES</td><td class="highlight-red confluenceTd" style="text-align: center;" colspan="1" rowspan="1" data-highlight-colour="red">NO</td></tr><tr><td colspan="1" rowspan="1" class="confluenceTd"><div class="content-wrapper"><p><a href="https://confluence.ihtsdotools.org/display/DOCRELFMT/moduleId+(field)" title="Reference term: moduleId ((field))" rel="nofollow" class="conf-macro output-inline" data-hasbody="false" data-macro-name="specref">moduleId</a></p></div></td><td colspan="1" rowspan="1" class="confluenceTd"><div class="content-wrapper"><p><a href="https://confluence.ihtsdotools.org/display/DOCRELFMT/SCTID+(data+type)" title="Reference term: SCTID ((data type))" rel="nofollow" class="conf-macro output-inline" data-hasbody="false" data-macro-name="specref">SCTID</a></p></div></td><td colspan="1" rowspan="1" class="confluenceTd"><div class="content-wrapper"><p>Identifies the <a href="https://confluence.ihtsdotools.org/display/DOCGLOSS/SNOMED+CT+module" title="Glossary link: SNOMED CT module" rel="nofollow" class="conf-macro output-inline" data-hasbody="false" data-macro-name="gloss">SNOMED CT module</a> that contains this <a href="https://confluence.ihtsdotools.org/display/DOCGLOSS/reference+set+member" title="Glossary link: reference set member" rel="nofollow" class="conf-macro output-inline" data-hasbody="false" data-macro-name="gloss">reference set member</a> as at the specified <a href="https://confluence.ihtsdotools.org/display/DOCRELFMT/effectiveTime+(field)" title="Reference term: effectiveTime ((field))" rel="nofollow" class="conf-macro output-inline" data-hasbody="false" data-macro-name="specref">effectiveTime</a> .</p><p>The value must be a <a href="https://confluence.ihtsdotools.org/display/DOCGLOSS/subtype" title="Glossary link: subtype" rel="nofollow" class="conf-macro output-inline" data-hasbody="false" data-macro-name="gloss">subtype</a> of <a href="http://snomed.info/id/900000000000443000" title="900000000000443000 | Module (core metadata concept) |" class="external-link" rel="nofollow" data-hasbody="false" data-macro-name="concept"> <span style="color: #606060;" class="sctid">900000000000443000</span> <span style="color: #00ccff;" class="sctpipe">|</span> <span style="color: #000000;" class="sctid">Module (core metadata concept)</span><span style="color: #00ccff;" class="sctpipe">|</span></a> within the metadata <a href="https://confluence.ihtsdotools.org/display/DOCGLOSS/hierarchy" title="Glossary link: hierarchy" rel="nofollow" class="conf-macro output-inline" data-hasbody="false" data-macro-name="gloss">hierarchy</a>. </p><div id="mark_moduleid" style="display:none" class="conf-macro output-inline" data-hasbody="false" data-macro-name="bookmarker"><br/></div><p> </p></div></td><td class="highlight-green confluenceTd" style="text-align: center;" colspan="1" rowspan="1" data-highlight-colour="green">YES</td><td class="highlight-red confluenceTd" style="text-align: center;" colspan="1" rowspan="1" data-highlight-colour="red">NO</td></tr><tr><td colspan="1" rowspan="1" class="confluenceTd"><div class="content-wrapper"><p><a href="https://confluence.ihtsdotools.org/display/DOCRELFMT/refsetId+(field)" title="Reference term: refsetId ((field))" rel="nofollow" class="conf-macro output-inline" data-hasbody="false" data-macro-name="specref">refsetId</a></p></div></td><td colspan="1" rowspan="1" class="confluenceTd"><div class="content-wrapper"><p><a href="https://confluence.ihtsdotools.org/display/DOCRELFMT/SCTID+(data+type)" title="Reference term: SCTID ((data type))" rel="nofollow" class="conf-macro output-inline" data-hasbody="false" data-macro-name="specref">SCTID</a></p></div></td><td colspan="1" rowspan="1" class="confluenceTd"><div class="content-wrapper"><p>Identifies the <a href="https://confluence.ihtsdotools.org/display/DOCGLOSS/reference+set" title="Glossary link: reference set" rel="nofollow" class="conf-macro output-inline" data-hasbody="false" data-macro-name="gloss">reference set</a> to which this <a href="https://confluence.ihtsdotools.org/display/DOCGLOSS/reference+set+member" title="Glossary link: reference set member" rel="nofollow" class="conf-macro output-inline" data-hasbody="false" data-macro-name="gloss">reference set member</a> belongs.</p><p> </p><div class="content-wrapper"><p>In this case, a subtype descendant of: <a href="http://snomed.info/id/705109006" title="705109006 | Code to expression type reference set |" class="external-link" rel="nofollow" data-hasbody="false" data-macro-name="concept"> <span style="color: #606060;" class="sctid">705109006</span> <span style="color: #00ccff;" class="sctpipe">|</span> <span style="color: #000000;" class="sctid">Code to expression type reference set</span><span style="color: #00ccff;" class="sctpipe">|</span></a> </p></div><p> </p></div></td><td class="highlight-red confluenceTd" style="text-align: center;" colspan="1" rowspan="1" data-highlight-colour="red">NO</td><td class="highlight-red confluenceTd" style="text-align: center;" colspan="1" rowspan="1" data-highlight-colour="red">NO</td></tr><tr><td colspan="1" rowspan="1" class="confluenceTd"><div class="content-wrapper"><p><a href="https://confluence.ihtsdotools.org/display/DOCRELFMT/referencedComponentId+(field)" title="Reference term: referencedComponentId ((field))" rel="nofollow" class="conf-macro output-inline" data-hasbody="false" data-macro-name="specref">referencedComponentId</a></p></div></td><td colspan="1" rowspan="1" class="confluenceTd"><div class="content-wrapper"><p><a href="https://confluence.ihtsdotools.org/display/DOCRELFMT/SCTID+(data+type)" title="Reference term: SCTID ((data type))" rel="nofollow" class="conf-macro output-inline" data-hasbody="false" data-macro-name="specref">SCTID</a></p></div></td><td colspan="1" rowspan="1" class="confluenceTd"><div class="content-wrapper"><p>A reference to the <a href="https://confluence.ihtsdotools.org/display/DOCGLOSS/SNOMED+CT+component" title="Glossary link: SNOMED CT component" rel="nofollow" class="conf-macro output-inline" data-hasbody="false" data-macro-name="gloss">SNOMED CT component</a> to be included in the <a href="https://confluence.ihtsdotools.org/display/DOCGLOSS/reference+set" title="Glossary link: reference set" rel="nofollow" class="conf-macro output-inline" data-hasbody="false" data-macro-name="gloss">reference set</a>. </p><div class="content-wrapper"><p>A subtype of <a href="http://snomed.info/id/705113004" title="705113004 | Terminology system |" class="external-link" rel="nofollow" data-hasbody="false" data-macro-name="concept"> <span style="color: #606060;" class="sctid">705113004</span> <span style="color: #00ccff;" class="sctpipe">|</span> <span style="color: #000000;" class="sctid">Terminology system</span><span style="color: #00ccff;" class="sctpipe">|</span></a> identifying the code system from which the code in the <a href="https://confluence.ihtsdotools.org/display/DOCRELFMT/mapTarget+(field)" title="Reference term: mapTarget (field)" rel="nofollow" class="conf-macro output-inline" data-hasbody="false" data-macro-name="specref">mapTarget</a> field is derived.</p><ul><li>For example: <a href="http://snomed.info/id/705114005" title="705114005 | LOINC Code System |" class="external-link" rel="nofollow" data-hasbody="false" data-macro-name="concept"> <span style="color: #606060;" class="sctid">705114005</span> <span style="color: #00ccff;" class="sctpipe">|</span> <span style="color: #000000;" class="sctid">LOINC Code System</span><span style="color: #00ccff;" class="sctpipe">|</span></a> .</li></ul></div><p> </p></div></td><td class="highlight-red confluenceTd" style="text-align: center;" colspan="1" rowspan="1" data-highlight-colour="red">NO</td><td class="highlight-red confluenceTd" style="text-align: center;" colspan="1" rowspan="1" data-highlight-colour="red">NO</td></tr><tr><td colspan="1" class="confluenceTd"><div class="content-wrapper"><p><a href="https://confluence.ihtsdotools.org/display/DOCRELFMT/mapSource+(field)" title="Reference term: mapSource (field)" rel="nofollow" class="conf-macro output-inline" data-hasbody="false" data-macro-name="specref">mapSource</a></p></div></td><td colspan="1" class="confluenceTd"><div class="content-wrapper"><p><a href="https://confluence.ihtsdotools.org/display/DOCRELFMT/String+(data+type)" title="Reference term: String (data type)" rel="nofollow" class="conf-macro output-inline" data-hasbody="false" data-macro-name="specref">String</a></p></div></td><td colspan="1" class="confluenceTd"><div class="content-wrapper"><p>The <a href="https://confluence.ihtsdotools.org/display/DOCGLOSS/other-code" title="Glossary link: other-code" rel="nofollow" class="conf-macro output-inline" data-hasbody="false" data-macro-name="gloss">other-code</a> which is mapped to the SNOMED CT expression.</p></div></td><td class="highlight-red confluenceTd" style="text-align: center;" colspan="1" data-highlight-colour="red">NO</td><td class="highlight-red confluenceTd" style="text-align: center;" colspan="1" data-highlight-colour="red">NO</td></tr><tr><td colspan="1" class="confluenceTd"><div class="content-wrapper"><p><a href="https://confluence.ihtsdotools.org/display/DOCRELFMT/expression+(field)" title="Reference term: expression (field)" rel="nofollow" class="conf-macro output-inline" data-hasbody="false" data-macro-name="specref">expression</a></p></div></td><td colspan="1" class="confluenceTd"><div class="content-wrapper"><p><a href="https://confluence.ihtsdotools.org/display/DOCRELFMT/String+(data+type)" title="Reference term: String (data type)" rel="nofollow" class="conf-macro output-inline" data-hasbody="false" data-macro-name="specref">String</a></p></div></td><td colspan="1" class="confluenceTd"><div class="content-wrapper"><p>A&nbsp; <a href="https://confluence.ihtsdotools.org/display/DOCGLOSS/SNOMED+CT+expression" title="Glossary link: SNOMED CT expression" rel="nofollow" class="conf-macro output-inline" data-hasbody="false" data-macro-name="gloss">SNOMED CT expression</a>&nbsp;that represents the meaning of the&nbsp; <a href="https://confluence.ihtsdotools.org/display/DOCGLOSS/other-code" title="Glossary link: other-code" rel="nofollow" class="conf-macro output-inline" data-hasbody="false" data-macro-name="gloss">other-code</a>. This expression may be a&nbsp; <a href="https://confluence.ihtsdotools.org/display/DOCGLOSS/stated+view" title="Glossary link: stated view" rel="nofollow" class="conf-macro output-inline" data-hasbody="false" data-macro-name="gloss">stated</a>&nbsp;or&nbsp; <a href="https://confluence.ihtsdotools.org/display/DOCGLOSS/inferred+view" title="Glossary link: inferred view" rel="nofollow" class="conf-macro output-inline" data-hasbody="false" data-macro-name="gloss">inferred view</a>&nbsp;of the definition provided that documentation of each identified reference set specifies the view provided.</p><p>The expression must conform to the syntax defined in the&nbsp;<a href="/display/DOCSCG/Compositional+Grammar+-+Specification+and+Guide" rel="nofollow">SNOMED CT Compositional Grammar - Specification and Guide</a>&nbsp;(<a href="http://snomed.org/scg" class="external-link" rel="nofollow">http://snomed.org/scg</a>).</p></div></td><td class="highlight-green confluenceTd" style="text-align: center;" colspan="1" data-highlight-colour="green">YES</td><td class="highlight-red confluenceTd" style="text-align: center;" colspan="1" data-highlight-colour="red">NO</td></tr><tr><td colspan="1" class="confluenceTd"><div class="content-wrapper"><p><a href="https://confluence.ihtsdotools.org/display/DOCRELFMT/definitionStatusId+(field)" title="Reference term: definitionStatusId (field)" rel="nofollow" class="conf-macro output-inline" data-hasbody="false" data-macro-name="specref">definitionStatusId</a> <strong> <br/></strong></p></div></td><td colspan="1" class="confluenceTd"><div class="content-wrapper"><p><a href="https://confluence.ihtsdotools.org/display/DOCRELFMT/SCTID+(data+type)" title="Reference term: SCTID (data type)" rel="nofollow" class="conf-macro output-inline" data-hasbody="false" data-macro-name="specref">SCTID</a></p></div></td><td colspan="1" class="confluenceTd"><div class="content-wrapper"><p>Indicates whether or not the expression contains a sufficient definition of the <a href="https://confluence.ihtsdotools.org/display/DOCGLOSS/other-code" title="Glossary link: other-code" rel="nofollow" class="conf-macro output-inline" data-hasbody="false" data-macro-name="gloss">other-code</a> in the mapSource field. <br class="atl-forced-newline"/>Possible values are the following subtypes of <a href="http://snomed.info/id/900000000000444006" title="900000000000444006 | Definition status |" class="external-link" rel="nofollow" data-hasbody="false" data-macro-name="concept"> <span style="color: #606060;" class="sctid">900000000000444006</span> <span style="color: #00ccff;" class="sctpipe">|</span> <span style="color: #000000;" class="sctid">Definition status</span><span style="color: #00ccff;" class="sctpipe">|</span></a> : </p><div class="conf-macro output-inline" data-hasbody="true" data-macro-name="scg-expression"><div style="margin-left:0px; margin-top:8px; margin-bottom:8px; "><div> <span style="color: #a00000;" class="sctid">&nbsp;&nbsp;&nbsp;&nbsp;</span> <a href="http://snomed.info/id/900000000000074008" title="900000000000074008 | Not sufficiently defined by necessary conditions definition status |" class="external-link" rel="nofollow"> <span style="color: #606060;" class="sctid">900000000000074008</span> <span style="color: #00ccff;" class="sctpipe">|</span><span style="color: #000000;" class="sctid">Not sufficiently defined by necessary conditions definition status</span><span style="color: #00ccff;" class="sctpipe">|</span></a> <span style="color: #a00000;" class="sctid"><br/>&nbsp;&nbsp;&nbsp;&nbsp;</span> <a href="http://snomed.info/id/900000000000073002" title="900000000000073002 | Sufficiently defined by necessary conditions definition status |" class="external-link" rel="nofollow"> <span style="color: #606060;" class="sctid">900000000000073002</span> <span style="color: #00ccff;" class="sctpipe">|</span><span style="color: #000000;" class="sctid">Sufficiently defined by necessary conditions definition status</span><span style="color: #00ccff;" class="sctpipe">|</span></a> </div></div></div><p> </p></div></td><td class="highlight-green confluenceTd" style="text-align: center;" colspan="1" data-highlight-colour="green">YES</td><td class="highlight-red confluenceTd" style="text-align: center;" colspan="1" data-highlight-colour="red">NO</td></tr><tr><td colspan="1" class="confluenceTd"><div class="content-wrapper"><p><a href="https://confluence.ihtsdotools.org/display/DOCRELFMT/correlationId+(field)" title="Reference term: correlationId (field)" rel="nofollow" class="conf-macro output-inline" data-hasbody="false" data-macro-name="specref">correlationId</a></p></div></td><td colspan="1" class="confluenceTd"><div class="content-wrapper"><p><a href="https://confluence.ihtsdotools.org/display/DOCRELFMT/SCTID+(data+type)" title="Reference term: SCTID (data type)" rel="nofollow" class="conf-macro output-inline" data-hasbody="false" data-macro-name="specref">SCTID</a></p></div></td><td colspan="1" class="confluenceTd"><div class="content-wrapper"><p>The correlation between the&nbsp;<a href="https://confluence.ihtsdotools.org/display/DOCGLOSS/other-code" title="Glossary link: other-code" rel="nofollow" class="conf-macro output-inline" data-hasbody="false" data-macro-name="gloss">other-code</a>&nbsp;and the SNOMED CT expression. Possible values are the following subtypes of <a href="http://snomed.info/id/1193546000" title="1193546000 | Map source to map target correlation (foundation metadata concept) |" class="external-link" rel="nofollow" data-hasbody="false" data-macro-name="concept"> <span style="color: #606060;" class="sctid">1193546000</span> <span style="color: #00ccff;" class="sctpipe">|</span> <span style="color: #000000;" class="sctid">Map source to map target correlation (foundation metadata concept)</span><span style="color: #00ccff;" class="sctpipe">|</span></a> : </p><div class="conf-macro output-inline" data-hasbody="true" data-macro-name="scg-expression"><div style="margin-left:0px; margin-top:8px; margin-bottom:8px; "><div> <a href="http://snomed.info/id/1193552004" title="1193552004 | Map source to map target correlation not specified |" class="external-link" rel="nofollow"> <span style="color: #606060;" class="sctid">1193552004</span> <span style="color: #00ccff;" class="sctpipe">|</span><span style="color: #000000;" class="sctid">Map source to map target correlation not specified</span><span style="color: #00ccff;" class="sctpipe">|</span></a> <span style="color: #a00000;" class="sctid">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<br/></span> <a href="http://snomed.info/id/1193551006" title="1193551006 | Map source not mappable to map target |" class="external-link" rel="nofollow"> <span style="color: #606060;" class="sctid">1193551006</span> <span style="color: #00ccff;" class="sctpipe">|</span><span style="color: #000000;" class="sctid">Map source not mappable to map target</span><span style="color: #00ccff;" class="sctpipe">|</span></a> <span style="color: #a00000;" class="sctid">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<br/></span> <a href="http://snomed.info/id/1193550007" title="1193550007 | Partial overlap between map source and target |" class="external-link" rel="nofollow"> <span style="color: #606060;" class="sctid">1193550007</span> <span style="color: #00ccff;" class="sctpipe">|</span><span style="color: #000000;" class="sctid">Partial overlap between map source and target</span><span style="color: #00ccff;" class="sctpipe">|</span></a> <span style="color: #a00000;" class="sctid">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<br/></span> <a href="http://snomed.info/id/1193549007" title="1193549007 | Narrow map source to broad map target |" class="external-link" rel="nofollow"> <span style="color: #606060;" class="sctid">1193549007</span> <span style="color: #00ccff;" class="sctpipe">|</span><span style="color: #000000;" class="sctid">Narrow map source to broad map target</span><span style="color: #00ccff;" class="sctpipe">|</span></a> <span style="color: #a00000;" class="sctid">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<br/></span> <a href="http://snomed.info/id/1193548004" title="1193548004 | Exact match between map source and map target |" class="external-link" rel="nofollow"> <span style="color: #606060;" class="sctid">1193548004</span> <span style="color: #00ccff;" class="sctpipe">|</span><span style="color: #000000;" class="sctid">Exact match between map source and map target</span><span style="color: #00ccff;" class="sctpipe">|</span></a> <span style="color: #a00000;" class="sctid">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<br/></span> <a href="http://snomed.info/id/1193547009" title="1193547009 | Broad map source to narrow map target |" class="external-link" rel="nofollow"> <span style="color: #606060;" class="sctid">1193547009</span> <span style="color: #00ccff;" class="sctpipe">|</span><span style="color: #000000;" class="sctid">Broad map source to narrow map target</span><span style="color: #00ccff;" class="sctpipe">|</span></a> <span style="color: #a00000;" class="sctid">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span> </div></div></div>When these values are applied to this reference set type, the phrase &quot;<em>map source</em>&quot; refers to the <span class="conf-macro output-inline" data-hasbody="false" data-macro-name="gloss"><a href="https://confluence.ihtsdotools.org/display/DOCGLOSS/other-code" title="Glossary link: other-code" rel="nofollow">other-code</a>.</span>&nbsp;and the &quot;<em>map target</em>&quot; refers to the SNOMED CT expression.<p> </p></div></td><td class="highlight-green confluenceTd" style="text-align: center;" colspan="1" data-highlight-colour="green">YES</td><td class="highlight-red confluenceTd" style="text-align: center;" colspan="1" data-highlight-colour="red">NO</td></tr><tr><td colspan="1" class="confluenceTd"><div class="content-wrapper"><p><a href="https://confluence.ihtsdotools.org/display/DOCRELFMT/contentOriginId+(field)" title="Reference term: contentOriginId (field)" rel="nofollow" class="conf-macro output-inline" data-hasbody="false" data-macro-name="specref">contentOriginId</a></p></div></td><td colspan="1" class="confluenceTd"><div class="content-wrapper"><p><a href="https://confluence.ihtsdotools.org/display/DOCRELFMT/SCTID+(data+type)" title="Reference term: SCTID (data type)" rel="nofollow" class="conf-macro output-inline" data-hasbody="false" data-macro-name="specref">SCTID</a></p></div></td><td colspan="1" class="confluenceTd"><div class="content-wrapper"><p>Indication of whether the concept was initially in one of the terminologies (SNOMED CT or <a href="https://confluence.ihtsdotools.org/display/DOCGLOSS/other-code" title="Glossary link: other-codes" rel="nofollow" class="conf-macro output-inline" data-hasbody="false" data-macro-name="gloss">other-codes</a>) and added to the other as part of mapping or was in both terminologies at the outset. Values are subtypes of &nbsp; <a href="http://snomed.info/id/705116007" title="705116007 | Original code system source for linked content value |" class="external-link" rel="nofollow" data-hasbody="false" data-macro-name="concept"> <span style="color: #606060;" class="sctid">705116007</span> <span style="color: #00ccff;" class="sctpipe">|</span> <span style="color: #000000;" class="sctid">Original code system source for linked content value</span><span style="color: #00ccff;" class="sctpipe">|</span></a> .</p></div></td><td class="highlight-green confluenceTd" style="text-align: center;" colspan="1" data-highlight-colour="green">YES</td><td class="highlight-red confluenceTd" style="text-align: center;" colspan="1" data-highlight-colour="red">NO</td></tr></tbody></table></div></div><div class="synchrony-exclude resize-width-holder" style="width: 1638.0px;"><br/></div> </div><p></p></span></p>

Specific Notes on the LOINC Term to Expression Reference Set

Rationale for Using a Code to Expression Type Reference Set

The | Code to expression type reference set|  was designed to meet the known requirements for associating LOINC Terms with SNOMED CT expressions, in accordance with the terms of the cooperation agreement. The main reason for using expressions rather than OWL to represent the definitions, is that expressions can precisely represent all aspects of the definitions represented by SNOMED CT defining relationships. An additional factor was the relative human-readability of this format for review as demonstrated by the expression tab in the SNOMED International online browser (http://snomed.org/browser).

LOINC Associations

Each LOINC Term Code within the scope of the cooperative work completed to date is associated with a SNOMED CT expressions that represent its formal logical definition. The definition is represented in accordance with the SNOMED CT concept model and thus each LOINC Term code in related directly to the SNOMED CT concepts that define it. The same definition could a expression to represent the definition. If a LOINC Term is recognized as having the same meaning as an existing SNOMED CT concept the associated expression may in future be supplemented by a direct map.

Expression Format

Each expression conforms to the SNOMED CT Composition Grammar. For further details of the syntax please see the  Compositional Grammar - Specification and Guide (http://snomed.org/scg). The expression represents the SNOMED CT definition of the LOINC Term based in the recently developed concept model for the  | Observable entity|  domain. Note that the expression that represents a LOINC Term does not include any inferred relationships with other LOINC Terms. Furthermore, since the new  | Observable entity|  has not yet been applied to many SNOMED CT concepts, the LOINC Terms are defined as subtypes  | Observable entity|  with an appropriate set of attribute relationships.  Thus the expressions released in the beta release on 2017-03-31 included only stated relationships.

LOINC Term Code Status Changes

Deprecated statuses will cause the expression associations to be marked as inactive but trial use status will not be represented. LOINC Terms that were already deprecated at the time of initial mapping will not be included in maps and associations. However, dependent on demand and priority to assessments, it is possible these may be added later.

Values Specific to LOINC Term Expression Associations

The following values are used in this reference set.

Value for refsetId

Value for referencedComponentId

Values for contentOriginId

  705117003 | Originally in LOINC|  
    
705118008 | Originally in SNOMED CT|  
    
705119000 | Originally in both LOINC and SNOMED CT|

Other Values

All other values are as specified for the  | Code to expression type reference set| .

 




Feedback