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717 lines
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<title>Searching with the UMLS Terminology Services</title>
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<h4 class="margin-bottom-0">Unified Medical Language System<small><sup>®</sup></small> (UMLS<small><sup>®</sup></small>)</h4>
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<li class="has-children"><div class="acnav__label"> <i class="arrow down"></i><a class="notactive" href="/research/umls/new_users/online_learning/OVR_001.html"> Overview </a></div><ul class="acnav__list acnav__list--level2" style="list-style-type: none; display: none;"><li class="li nav-item"><a class="notactive nav-link link10112" href="/research/umls/new_users/online_learning/OVR_002.html">The Metathesaurus </a></li><li class="li nav-item"><a class="notactive nav-link link10123" href="/research/umls/new_users/online_learning/OVR_003.html">The Semantic Network</a></li><li class="li nav-item"><a class="notactive nav-link link10134" href="/research/umls/new_users/online_learning/OVR_004.html">SPECIALIST Lexicon and Lexical Tools </a></li><li class="li nav-item"><a class="notactive nav-link link10145" href="/research/umls/new_users/online_learning/OVR_005.html">The UMLS License Agreement </a></li><li class="li nav-item"><a class="notactive nav-link link10156" href="/research/umls/new_users/online_learning/OVR_006.html">The UMLS License Agreement Appendix 2 -- SNOMED CT Affiliate Licence Agreement </a></li></ul></li><li class="has-children"><div class="acnav__label"> <i class="arrow down"></i><a class="notactive" href="/research/umls/new_users/online_learning/Meta_001.html"> Metathesaurus </a></div><ul class="acnav__list acnav__list--level2" style="list-style-type: none; display: none;"><li class="li nav-item"><a class="notactive nav-link link10268" href="/research/umls/new_users/online_learning/Meta_002.html">Source Vocabularies</a></li><li class="li nav-item"><a class="notactive nav-link link10279" href="/research/umls/new_users/online_learning/Meta_003.html">Subsets</a></li><li class="li nav-item"><a class="notactive nav-link link102810" href="/research/umls/new_users/online_learning/Meta_004.html">Preferred Terms</a></li><li class="li nav-item"><a class="notactive nav-link link102911" href="/research/umls/new_users/online_learning/Meta_005.html">Unique Identifiers in the Metathesaurus</a></li><li class="li nav-item"><a class="notactive nav-link link1021012" href="/research/umls/new_users/online_learning/Meta_006.html">Metathesaurus Data Files </a></li></ul></li><li class="has-children"><div class="acnav__label"> <i class="arrow down"></i><a class="notactive" href="/research/umls/new_users/online_learning/SEM_001.html"> Semantic Network </a></div><ul class="acnav__list acnav__list--level2" style="list-style-type: none; display: none;"><li class="li nav-item"><a class="notactive nav-link link1031114" href="/research/umls/new_users/online_learning/SEM_002.html">Identifiers in the Semantic Network </a></li><li class="li nav-item"><a class="notactive nav-link link1031215" href="/research/umls/new_users/online_learning/SEM_003.html">Semantic Types</a></li><li class="li nav-item"><a class="notactive nav-link link1031316" href="/research/umls/new_users/online_learning/SEM_004.html">Semantic Relationships</a></li><li class="li nav-item"><a class="notactive nav-link link1031417" href="/research/umls/new_users/online_learning/SEM_005.html">Semantic Relationships at the Concept Level </a></li><li class="li nav-item"><a class="notactive nav-link link1031518" href="/research/umls/new_users/online_learning/SEM_006.html">Parent - Child (broader/narrower) Relationships </a></li></ul></li><li class="has-children"><div class="acnav__label"> <i class="arrow down"></i><a class="notactive" href="/research/umls/new_users/online_learning/LEX_001.html"> Lexical Tools </a></div><ul class="acnav__list acnav__list--level2" style="list-style-type: none; display: none;"><li class="li nav-item"><a class="notactive nav-link link1041620" href="/research/umls/new_users/online_learning/LEX_002.html">Lexical Entries</a></li><li class="li nav-item"><a class="notactive nav-link link1041721" href="/research/umls/new_users/online_learning/LEX_003.html">The Lexical Tools</a></li><li class="li nav-item"><a class="notactive nav-link link1041822" href="/research/umls/new_users/online_learning/LEX_004.html">Lexical Variant Generation (LVG)</a></li><li class="li nav-item"><a class="notactive nav-link link1041923" href="/research/umls/new_users/online_learning/LEX_005.html">The Norm Program</a></li><li class="li nav-item"><a class="notactive nav-link link1042024" href="/research/umls/new_users/online_learning/LEX_006.html">The Word Index Generator - Wordind</a></li></ul></li><li class="has-children is-open"><div class="acnav__label"> <i class="arrow down"></i><a class="notactive" href="/research/umls/new_users/online_learning/UMLST_001.html"> UMLS Tools </a></div><ul class="acnav__list acnav__list--level2" style="list-style-type: none; display: block;"><li class="li nav-item"><a class="notactive nav-link link1052126" href="/research/umls/new_users/online_learning/UMLST_002.html">The UMLS Terminology Services (UTS)</a></li><li class="li nav-item"><a class="active nav-link link1052227" href="/research/umls/new_users/online_learning/UMLST_003.html">Searching with the UMLS Terminology Services</a></li><li class="li nav-item"><a class="notactive nav-link link1052328" href="/research/umls/new_users/online_learning/UMLST_004.html">MetamorphoSys</a></li><li class="li nav-item"><a class="notactive nav-link link1052429" href="/research/umls/new_users/online_learning/UMLST_005.html">Accessing MetamorphoSys</a></li><li class="li nav-item"><a class="notactive nav-link link1052530" href="/research/umls/new_users/online_learning/UMLST_006.html">When MetamorphoSys is Complete</a></li><li class="li nav-item"><a class="notactive nav-link link1052631" href="/research/umls/new_users/online_learning/UMLST_007.html">UMLS Community Page</a></li><li class="li nav-item"><a class="notactive nav-link link1052732" href="/research/umls/new_users/online_learning/UMLST_008.html">Sample Load Scripts and Data Model</a></li><li class="li nav-item"><a class="notactive nav-link link1052833" href="/research/umls/new_users/online_learning/UMLST_009.html">The Rich Release Format (RRF) Subset Browser</a></li></ul></li><li><a class="notactive" href="/research/umls/new_users/online_learning/glossary.html"> Glossary </a></li><li><a class="notactive" href="/research/umls/new_users/online_learning/faqs.html"> UMLS FAQs </a></li><li><a class="notactive" href="/research/umls/new_users/online_learning/HELP_001.html"> User Support </a></li><li><a class="notactive" href="/research/umls/new_users/online_learning/end.html"> Feedback </a></li><li><a class="notactive" href="//support.nlm.nih.gov/?style=classic&deptID=28054index.html"> Contact US </a></li>
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<div class="tablet:grid-col-9">
|
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<div class="grid-row">
|
||
<div class="desktop:grid-col-8 tablet:grid-col-12">
|
||
<h1>Searching with the UMLS Terminology Services</h1>
|
||
</div>
|
||
|
||
|
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|
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</div>
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|
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|
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|
||
<p>The UMLS Terminology Services offers users many options for searching the UMLS Knowledge Sources.</p>
|
||
<p> <strong>Metathesaurus Searching</strong><br />
|
||
Users can search for a concept by entering a term name, a Concept Unique Identifier (CUI), or a code. Users can further limit the search by selecting the release and the source. A third search option, Search Type, restricts parameters to an approximate or exact match, allows users to left or right truncate a word, or to search by a normalized string or word. All options search the complete Metathesaurus. There is no search option designed to search a subset stored on a users computer.</p>
|
||
<p>All search options return the same information:</p>
|
||
<ul>
|
||
<li>Concept</li>
|
||
<li>CUI (Concept Unique Identifier)</li>
|
||
<li>Semantic Type(s)</li>
|
||
<li>Definition (if provided)</li>
|
||
<li>Atoms</li>
|
||
<li>Contexts</li>
|
||
<li>Concept Relations</li>
|
||
</ul>
|
||
<p><strong>Semantic Network Browsing</strong><br />
|
||
Users can select the semantic type or relation from two menus to view the semantic record for each semantic type or relation. </p>
|
||
<p>Semantic records include the following information, where applicable:</p>
|
||
<ul>
|
||
<li>Definition</li>
|
||
<li>Properties</li>
|
||
<li>Parents</li>
|
||
<li>Children</li>
|
||
<li>Relations</li>
|
||
<li>Inverse Relations</li>
|
||
<li>Inherited Relations</li>
|
||
<li>Inverse Inherited Relations</li>
|
||
</ul>
|
||
<p>Users can also browse the semantic types and relations by selecting 'Tree' tab. This view allows users to expand the semantic type and relations hierarchies to view the semantic record for each item.</p>
|
||
<p><strong>SNOMED CT Searching</strong><br />
|
||
Users can search for and display SNOMED CT content, as included in the Metathesaurus. Users can search by SNOMED CT term, SNOMED CT ConceptID, or SNOMED CT DescriptionID.
|
||
</p><p>
|
||
Users can also navigate the SNOMED CT hierarchy from its topmost "SNOMED CT Concept" through the 19 SNOMED CT main categories to the individual concepts organized within them.</p>
|
||
<p><strong>Developer Resources</strong><br />
|
||
Users can remotely query and retrieve data from the Metathesaurus using the UTS Web services API.</p>
|
||
<p>The UTS also includes a RESTful interface that allows application developers to verify that users have an active license code. Application developers must be authorized distributors of UMLS data to use this service.</p>
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<p class=”margin-top-5”><small>Last Reviewed: July 29, 2016</small></p>
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