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<p class="tableOfContents"><strong>Table of Contents: <a href="/pubs/techbull/nd13/nd13_issue_cover.html">2013 NOVEMBER&#8211;DECEMBER No. 395</a></strong></p>
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<h1 class="articleH1">UMLS 2013AB Release Available</h1>
<p class="tbyearmonth">Wilder V. UMLS 2013AB Release Available. NLM Tech Bull. 2013 Nov-Dec;(395):e4.</p>
<div class="articleactions">2013 November 22 <span class="status">[posted]</span>
</div>
<div class="articleParagraph">
<p>The 2013AB release of the Unified Medical Language System (UMLS) Knowledge Sources is available for <a href="//www.nlm.nih.gov/research/umls/licensedcontent/umlsknowledgesources.html">download</a> as of November 21, 2013.<br /><br />
In the new UMLS Release there are: </p>
<ul>
<li>More than 2.9 million concepts and 11.4 million unique concept names from over 160 source vocabularies</li>
<li>The full Metathesaurus requires 23 GB of disk space; the active release requires 22 GB of disk space.</li>
<li>Four new sources
<ul>
<li>Anatomical Therapeutic Chemical Classification System (ATC)</li>
<li>Current Dental Terminology (CDT)</li>
<li>US Edition of SNOMED CT (SNOMEDCT_US)</li>
<li>Vaccines Administered (CVX)</li>
</ul>
</li>
<li>One new mapping
<ul>
<li>SNOMED CT-to-ICD10</li>
</ul>
</li>
<li>37 updated English sources and 20 updated translation sources including MeSH, MedDRA, RxNorm, and SNOMED CT<span class="registered">&#174;</span> (English and Spanish)</li>
</ul>
<p>As of 2013AA, the release is available in two versions: Full and Active.</p>
<dl><dt>
<dd>The Full Release includes all source vocabularies.<br /><br /></dd>
<dd>The <a href="//www.nlm.nih.gov/research/umls/knowledge_sources/metathesaurus/release/active_release.html">Active Release</a> includes only vocabularies that are actively updated in the Metathesaurus. The Active Release is a smaller download, decreases MetamorphoSyS processing time, and provides easier access to current Metathesaurus content. </dd>
</dl>
<p><strong>Data Changes</strong></p>
<ul>
<li>MRCONSO file change: The maximum length for the CODE, SAUI, SCUI, and SDUI fields is now increased to 100 characters.</li>
<li>The co-occurrences files, MRCOC.RRF and MRCOC (ORF format), are not included in the release as of 2013AB. <a href="//ii.nlm.nih.gov/MRCOC.shtml">Co-occurrence information</a> is available on the <a href="//mbr.nlm.nih.gov/">MEDLINE/PubMED Baseline Repository (MBR)</a> Web site.</li>
<li>The Metathesaurus no longer includes these vocabulary sources, listed by Source abbreviation (SAB):
<ul>
<li>MTHHL7V25 (HL7 Vocabulary Version 2.5, 7-bit equivalents)</li>
<li>MTHICPC2ICD107B (International Classification of Primary Care 2nd Edition, 7-bit Equivalents)</li>
<li>SNOMEDCT (International Release of SNOMED CT); content is available in SNOMEDCT_US</li>
<li>SNOMEDCT_USX (US Extension of SNOMED CT); content is available in SNOMEDCT_US</li>
</ul>
</li>
<li>NLM no longer creates plain ASCII versions of atoms where the original string value included non-ASCII characters. As of this release the Metathesaurus does not include these ASCII terms. Metathesaurus indexes reflect these changes and include modifications to maintain existing search and retrieval capabilities.
<ul>
<li>Use the Unicode Filter in MetamorphoSys to convert to ASCII or remove non-ASCII terms from your subset.</li>
</ul>
</li>
</ul>
<p><strong>Logical Observation Identifier Names and Codes (LOINC)</strong></p>
<ul>
<li>LNC_AD8 (Eight-item Informant Interview to Differentiate Aging and Dementia) and LNC_MDS30 (Minimum Data Set, 3.0):<br />
<ul>
<li>As of 2013AB, this content is included under SAB=LNC due to processing changes.</li>
</ul>
</li>
<li>The representation of LOINC (SAB=LNC) in the Metathesaurus does not include the following content:
<ul>
<li>Blessed Orientation-Memory-Concentration Test</li>
<li>Borderline Symptom List 23 Item</li>
<li>Borderline Symptom List Supplement</li>
<li>Edinburgh Postnatal Depression Scale</li>
<li>Patient Reported Outcomes Measurement (PROMIS)</li>
<li>Test of Infant Motor Performance (TIMP)</li>
</ul>
</li>
</ul>
<p><strong>Release Information</strong><br />
For more information about the release, see the <a href="//www.nlm.nih.gov/research/umls/knowledge_sources/metathesaurus/release/notes.html">What's New</a> and <a href="//www.nlm.nih.gov/research/umls/knowledge_sources/metathesaurus/release/updated_sources.html">Updated Sources</a> sections of the <a href="//www.nlm.nih.gov/research/umls/knowledge_sources/metathesaurus/release/index.html">Release Documentation</a>. Additional <a href="//www.nlm.nih.gov/research/umls/knowledge_sources/metathesaurus/release/statistics.html">release statistics</a> are published on the <a href="//www.nlm.nih.gov/research/umls/">UMLS</a> Web site.</p>
<p>To access the UMLS Release files, you must have an active <a href="//www.nlm.nih.gov/databases/umls.html">UMLS Metathesaurus License</a> and a valid UTS account. You will be prompted for your UTS username and password when downloading the files. </p>
<p>Additional information regarding the UMLS is available on the <a href="//www.nlm.nih.gov/research/umls/">UMLS homepage</a>. New users are encouraged to take the <a href="//www.nlm.nih.gov/research/umls/new_users/online_learning/OVR_001.html">UMLS Basics Tutorial</a> and to explore the new <a href="//www.nlm.nih.gov/research/umls/quickstart.html">UMLS Quick Start Guide</a>, training materials and other information on the <a href="//www.nlm.nih.gov/research/umls/new_users/index.html">New Users' homepage</a>.</p>
<p><strong>Source Release Documentation</strong><br />
2013AB <a href="//www.nlm.nih.gov/research/umls/sourcereleasedocs/index.html">Source Release Documentation</a> Web pages will be published following the release.</p>
</div>
<p class="articleParagraph">
By
Victoria Wilder<br />
MEDLARS Management Section<br />
</p>
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