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<p class="tableOfContents"><strong>Table of Contents: <a href="/pubs/techbull/jf21/jf21_issue_cover.html">2021 JANUARY–FEBRUARY No. 438</a></strong></p>
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<span class="previous"><a href="jf21_new_medline_website.html">Previous</a></span> <span class="next"><a href="jf21_serials_list_2021.html">Next</a></span>
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<h1 class="articleH1"> NLM Classification 2021 Winter Edition Now Available</h1>
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<p class="tbyearmonth">Willis S. NLM Classification 2021 Winter Edition Now Available. NLM Tech Bull. 2021 Jan-Feb;(438):e3.</p>
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<div class="articleactions">2021 February 16 <span class="status">[posted]</span>
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</div>
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<div class="articleParagraph">
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<h1>Scope of Revision of the 2021 Winter Edition</h1>
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<p></p>
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<p>The 2021 MeSH (Medical Subject Headings) vocabulary was evaluated for inclusion in the <a href="https://www.nlm.nih.gov/class/index.html%20">Classification index</a>. Several additions and changes were made to the Index and Schedules based on this review. All main index headings are now linked to the 2021 vocabulary in the MeSH Browser. Additional minor updates were made to the Index and Schedules.</p>
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<p></p>
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<h1>Summary Statistics for the 2021 Winter Edition</h1>
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<p></p>
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<ul>
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<li>51 index main headings added (46 from 2021 MeSH)</li>
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<li>48 index entries modified</li>
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<li>1 index heading deleted</li>
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<li>28 class numbers added</li>
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<li>23 class number captions or notes modified</li>
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<li>1 class number canceled</li>
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</ul>
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<p></p>
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<h1>Examples of Additions and Changes Based on MeSH 2021</h1>
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<p></p>
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<h2>Summary of COVID-19 related changes</h2>
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<ul>4 new index terms</ul>
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<ul>5 modified index terms</ul>
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<ul>11 new class numbers</ul>
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<ul>2 modified class numbers</ul>
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<ul>1 canceled class number</ul>
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<p></p>
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<ul>
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<li>The virus, <strong>SARS-CoV-2,</strong> was added to an existing number, QW 168.5.C8 Coronaviridae</li>
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<li>The disease, <strong>COVID-19</strong>, was added to the index at a new number in the viral respiratory tract infections area: WC 506. A breakdown of 8 new subordinate WC 506 class numbers were created to cover the various aspects of COVID-19 like the breakdown under AIDS at WC 503.</li>
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<li>A new nursing number was created for COVID-19 nursing: WY 153.7</li>
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<li><strong>COVID-19 Testing</strong> was added to the index and classed at one of the new COVID-19 numbers: WC 506.1 Diagnosis. For consistency, some changes were made to the classification of serodiagnosis of other diseases:
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<ul>
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<li>QY 275 Syphilis serodiagnosis was canceled.</li>
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<li>Syphilis Serodiagnosis is now classed with Syphilis in the new number: WC 160.5 Diagnosis</li>
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<li>AIDS Serodiagnosis was moved from QY 265 Serologic tests (General) and is now classed with AIDS diagnosis at WC 503.1</li>
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</ul>
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</li>
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<li><strong>COVID-19 Vaccines </strong>was added to the index and classed at one of the new COVID-19 numbers: WC 506.6</li>
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</ul>
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<h2><a name="_Toc62991050"></a>Other E1 Diagnosis Terms Added</h2>
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<ul>
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<li><strong>HIV Testing </strong>WC 503.1 (classed with HIV/AIDS diagnosis; now AIDS Serodiagnosis is classed here as well)</li>
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<li><strong>Clinical Reasoning </strong>WB 142.5
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<ul>
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<li>Treed under Clinical Decision-Making (currently classed at WB 141)</li>
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<li>Since WB 141 is a heavily populated number, a new number was created for the parent term, Clinical Decision-Making at WB 142.5</li>
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</ul>
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</li>
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</ul>
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<h2><a name="_Toc62991051"></a>Summary of Neurobehavioral Manifestations Changes</h2>
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<ul>
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<li>In 2020 MeSH, <strong>Mania</strong> was an Entry Term to Bipolar Disorder (classed at WM 171.7). With MeSH 2021, Mania is a new term treed under Neurobehavioral Manifestations (classed at WL 340).</li>
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<li>A review of all the terms classed under Neurobehavioral Manifestations was conducted to see if there was enough literary warrant to create a new class number for this parent term.</li>
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<li>As a result of this analysis, a new class number WL 340.1 was created for Neurobehavioral Manifestations. This new number is indented under WL 340 Neurologic manifestations (General or not elsewhere classified).</li>
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<li>Mania and several existing terms in the class index that tree under Neurobehavioral Manifestations are now classed in the new number, WL 340.1</li>
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</ul>
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<h2><a name="_Toc62991052"></a>Summary of Opiate Overdose Changes</h2>
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<ul>
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<li>The new 2021 <strong>Opiate Overdose</strong> was added to the index</li>
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<li>Related maintenance was made to the Classification:
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<ul>
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<li>The caption at QV 90 was changed from Opium to Opiate alkaloids.</li>
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<li>Opium Alkaloids was added to the index and classed at QV 90</li>
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<li>A new number was created for Papaveraceae at QV 766.5.R3</li>
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<li>The classification of Opium was changed from QV 90 to QV 766.5.R3</li>
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</ul>
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</li>
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</ul>
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<p></p>
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<h2><a name="_Toc62991053"></a>Gender Terms added</h2>
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<p></p>
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<ul><strong>Gender Equity</strong> HQ 1237 - HQ 1237.5</ul>
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<p></p>
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<ul><strong>Gender Role</strong> HQ 1075-1075.5</p>
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<ul>
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<li>In 2020 MeSH, Gender Role was an Entry Term to Gender Identity (WM 617, etc.)</li>
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<li>Gender Role (social role) is different from Gender Identity (psychological)</li>
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</ul>
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<p></p>
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<h2>Social Terms added</h2>
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<ul>
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<li><strong>Social Evolution </strong>HM 626-631</li>
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<li><strong>Social Inclusion </strong>HM 683</li>
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<li><strong>Social Interaction </strong></li>
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</ul>
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<ul> General HM 1111</ul>
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<ul> Adolescent WS 462.5.S6</ul>
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<ul> Child WS 105.5.S6</ul>
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</ul>
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<p></p>
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<h2>Other F01 Behavior and Behavior Mechanisms added</h2>
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<p></p>
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<ul>
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<li><strong>Test Anxiety</strong></li>
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</ul>
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<ul><ul>General WM 172</ul></ul>
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<ul><ul>Adolescent WS 462.5.E5</ul></ul>
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<ul><ul>Child WS 105.5.E5</ul></ul>
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<p></p>
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<ul>
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<li><strong>Human-Animal Interaction </strong>QL 85
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<ul>
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<li>The existing child term, Bonding, Human-Pet was changed to Human-Animal Bond per MeSH</li>
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<li>The caption at WM 460.5.B7 was changed from Bonding, Human-Pet to Human-animal bond to match MeSH</li>
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</ul>
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</li>
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</ul>
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<h2></a>Sexual Terms added</h2>
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<p></p>
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<ul>
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<li><strong>Sexual Arousal</strong></li>
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</ul>
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<ul><ul>General WJ 702</ul></ul>
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<ul><ul>Female WP 505</ul></ul>
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<ul><ul>Male WJ 702</ul></ul>
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<ul>
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<li><strong>Sexual Selection </strong>QU 520
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<ul>
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<li>2007 term <strong>Mating Preference, Animal </strong>(which has Entry Term <strong>Sexual Selection, Animal</strong>)was added to index at QL 761 to differentiate</li>
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</ul>
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</li>
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<li><strong>Sexual Trauma </strong></li>
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<ul>
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<li>A new number was created for Sexual Trauma at WM 187</li></p>
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</ul></ul>
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<h2>Psychotherapy Terms added</h2>
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<p></p>
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<ul>
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<li>Three new terms treed under Psychotherapy were added to the Index. 3 new corresponding WM 420.5 A-Z class numbers were added to the schedule. 1 class number was modified</li>
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</ul>
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<ul>
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<li><strong>Logotherapy </strong>WM 420.5.L6 (new number)
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<ul>
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<li>In 2020 MeSH, Logotherapy was Entry Term to Psychotherapy</li>
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<li>Logotherapy was removed from caption at WM 460.5.E8 (Existentialism. Logotherapy). MS for Logotherapy indicates this is "Directive existential psychotherapy..." but this term does not belong in the psychoanalysis area</li>
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</ul>
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</li>
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<li><strong>Psychosocial Intervention</strong> WM 420.5.P4 (new number)</li>
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<li><strong>Schema Therapy</strong> WM 420.5.S3 (new number). In 2020 MeSH, Schema Therapy was Entry Term to Psychotherapy</li>
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</ul>
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<p></p>
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<h2>Nursing Terms added</h2>
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<p></p>
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<ul>
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<li><strong>Developmental Disability Nursing </strong>WY 172 (new number)</li>
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<li><strong>Trauma Nursing </strong>WY 154.2
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<ul>
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<li>Trauma Nursing added to caption with Emergency Nursing</li>
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</ul>
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</li>
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</ul>
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<p></p>
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<h2>Food Terms added</h2>
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<p></p>
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<ul>
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<li>Three new food terms were added to the index classed at WA 695
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<ul>
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<li><strong>Food Deserts </strong></li>
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<li><strong>Food Insecurity </strong></li>
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<li><strong>Food Security </strong></li>
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</ul>
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</li>
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<li>WA 695 now allows for geographical breakdown</li>
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<li>A new number WA 695.1 was added for non-geographic breakdown</li>
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</ul>
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<p></p>
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<h2><a name="_Toc62991060"></a>Internet Terms</h2>
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<p></p>
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<p>Two new internet terms were added to Index</p>
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<ul>
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<li><strong>Internet Addiction Disorder </strong></li>
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</ul>
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<ul><ul>General WM 176</ul></ul>
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<ul><ul>Adolescent WS 462.5.T4</ul></ul>
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<ul><ul>Child WS 105.5.T4</ul></ul>
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<ul>
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<li><strong>Internet Use </strong></li>
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</ul>
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<ul><ul>Effect on adolescents WS 462.5.T4</ul></ul>
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<ul><ul>Effect on children WS 105.5.T4</ul></ul>
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<ul><ul>See also Internet Addiction Disorder</ul>
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</ul></ul>
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<p></p>
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<h2>Person Terms</h2>
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<p>Two new index terms from the M tree were added. One new class number was added. One class number modified</p>
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<ul>
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<li><strong>Metal Workers </strong>WA 487.5.M4 (new number) added</li>
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<li><strong>Psychotherapists</strong>
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<ul>
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<li>General WM 21</li>
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<li>Biography
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<ul>
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<li>Collective WZ 112.5.P7</li>
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<li>Individual WZ 100</li>
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</ul>
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</li>
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<li>Directories WM 22</li>
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<li>Interpersonal Relations WM 62</li>
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</ul>
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</li>
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<li>Psychotherapists was added to the caption at WZ 112.5.P7</li>
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</ul>
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<h2><a name="_Toc62991061"></a>Main Index Headings Changes Based on MeSH 2021</h2>
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<p>For 2021, of the 14 MeSH headings were changed, deleted, or replaced with more up-to-date terminology, only five affected the NLM Classification</p>
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<table width="855">
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<tbody>
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<tr>
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<td width="425">
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<p><strong>Replaced Term</strong></p>
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</td>
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<td width="424">
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<p><strong>Replaced-By Term</strong></p>
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</td>
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</tr>
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<tr>
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<td width="425">
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<p>Alaska Natives</p>
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</td>
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<td width="424">
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<p><a href="https://meshb.nlm.nih.gov/record/ui?ui=D000072957">Alaskan Natives</a></p>
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</td>
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</tr>
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<tr>
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<td width="425">
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<p>Bonding, Human-Pet</p>
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</td>
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<td width="424">
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<p><a href="https://meshb.nlm.nih.gov/record/ui?ui=D001841">Human-Animal Bond</a></p>
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</td>
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</tr>
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<tr>
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<td width="425">
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<p>Clostridium difficile</p>
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</td>
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<td width="424">
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<p><a href="https://meshb.nlm.nih.gov/record/ui?ui=D016360">Clostridioides difficile</a></p>
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</td>
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</tr>
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<tr>
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<td width="425">
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<p>Mentally Disabled Persons</p>
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</td>
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<td width="424">
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<p><a href="https://meshb.nlm.nih.gov/record/ui?ui=D019989">Persons with Mental Disabilities</a></p>
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</td>
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</tr>
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<tr>
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<td width="425">
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<p>Respiratory Distress Syndrome, Adult</p>
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</td>
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<td width="424">
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<p><a href="https://meshb.nlm.nih.gov/record/ui?ui=D012128">Respiratory Distress Syndrome</a></p>
|
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</td>
|
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</tr>
|
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</tbody>
|
|
</table>
|
|
<p> </p>
|
|
<h1>List of All Class Numbers Added for the 2021 Winter Edition</h1>
|
|
<table width="100%">
|
|
<thead>
|
|
<tr>
|
|
<td width="24%">
|
|
<p><strong>New Class Number</strong></p>
|
|
</td>
|
|
<td width="44%">
|
|
<p><strong>Caption</strong></p>
|
|
</td>
|
|
</tr>
|
|
</thead>
|
|
<tbody>
|
|
<tr>
|
|
<td width="24%">
|
|
<p>QV 766.5.R3</p>
|
|
</td>
|
|
<td width="44%">
|
|
<p>Papaveraceae</p>
|
|
</td>
|
|
</tr>
|
|
<tr>
|
|
<td width="24%">
|
|
<p>QW 40</p>
|
|
</td>
|
|
<td width="44%">
|
|
<p>Microorganisms (General or not elsewhere classified)</p>
|
|
</td>
|
|
</tr>
|
|
<tr>
|
|
<td width="24%">
|
|
<p>QW 46 </p>
|
|
</td>
|
|
<td width="44%">
|
|
<p>Microbial genetics</p>
|
|
</td>
|
|
</tr>
|
|
<tr>
|
|
<td width="24%">
|
|
<p>QW 48 </p>
|
|
</td>
|
|
<td width="44%">
|
|
<p>Blood-borne pathogens</p>
|
|
</td>
|
|
</tr>
|
|
<tr>
|
|
<td width="24%">
|
|
<p>WA 330.1</p>
|
|
</td>
|
|
<td width="44%">
|
|
<p>General coverage (Not Table-G)</p>
|
|
</td>
|
|
</tr>
|
|
<tr>
|
|
<td width="24%">
|
|
<p>WA 487.5.M4</p>
|
|
</td>
|
|
<td width="44%">
|
|
<p>Metal workers</p>
|
|
</td>
|
|
</tr>
|
|
<tr>
|
|
<td width="24%">
|
|
<p>WA 695.1</p>
|
|
</td>
|
|
<td width="44%">
|
|
<p>General coverage (Not Table-G)</p>
|
|
</td>
|
|
</tr>
|
|
<tr>
|
|
<td width="24%">
|
|
<p>WB 142.5</p>
|
|
</td>
|
|
<td width="44%">
|
|
<p>Clinical decision-making</p>
|
|
</td>
|
|
</tr>
|
|
<tr>
|
|
<td width="24%">
|
|
<p>WC 160.5</p>
|
|
</td>
|
|
<td width="44%">
|
|
<p>Diagnosis</p>
|
|
</td>
|
|
</tr>
|
|
<tr>
|
|
<td width="24%">
|
|
<p>WC 506 </p>
|
|
</td>
|
|
<td width="44%">
|
|
<p>COVID-19</p>
|
|
</td>
|
|
</tr>
|
|
<tr>
|
|
<td width="24%">
|
|
<p>WC 506.1</p>
|
|
</td>
|
|
<td width="44%">
|
|
<p>Diagnosis</p>
|
|
</td>
|
|
</tr>
|
|
<tr>
|
|
<td width="24%">
|
|
<p>WC 506.2</p>
|
|
</td>
|
|
<td width="44%">
|
|
<p>Therapy</p>
|
|
</td>
|
|
</tr>
|
|
<tr>
|
|
<td width="24%">
|
|
<p>WC 506.3</p>
|
|
</td>
|
|
<td width="44%">
|
|
<p>Etiology. Transmission</p>
|
|
</td>
|
|
</tr>
|
|
<tr>
|
|
<td width="24%">
|
|
<p>WC 506.4</p>
|
|
</td>
|
|
<td width="44%">
|
|
<p>Epidemiology (<a href="https://classification.nlm.nih.gov/tableg">Table-G</a>)</p>
|
|
</td>
|
|
</tr>
|
|
<tr>
|
|
<td width="24%">
|
|
<p>WC 506.41</p>
|
|
</td>
|
|
<td width="44%">
|
|
<p>General coverage (Not Table-G)</p>
|
|
</td>
|
|
</tr>
|
|
<tr>
|
|
<td width="24%">
|
|
<p>WC 506.5</p>
|
|
</td>
|
|
<td width="44%">
|
|
<p>Complications</p>
|
|
</td>
|
|
</tr>
|
|
<tr>
|
|
<td width="24%">
|
|
<p>WC 506.6</p>
|
|
</td>
|
|
<td width="44%">
|
|
<p>Prevention and control</p>
|
|
</td>
|
|
</tr>
|
|
<tr>
|
|
<td width="24%">
|
|
<p>WC 506.7</p>
|
|
</td>
|
|
<td width="44%">
|
|
<p>Psychological aspects. Socioeconomic factors</p>
|
|
</td>
|
|
</tr>
|
|
<tr>
|
|
<td width="24%">
|
|
<p>WL 340.1</p>
|
|
</td>
|
|
<td width="44%">
|
|
<p>Neurobehavioral manifestations</p>
|
|
</td>
|
|
</tr>
|
|
<tr>
|
|
<td width="24%">
|
|
<p>WM 187</p>
|
|
</td>
|
|
<td width="44%">
|
|
<p>Sexual trauma</p>
|
|
</td>
|
|
</tr>
|
|
<tr>
|
|
<td width="24%">
|
|
<p>WM 413</p>
|
|
</td>
|
|
<td width="44%">
|
|
<p>Complementary therapies (General or not elsewhere classified)</p>
|
|
</td>
|
|
</tr>
|
|
<tr>
|
|
<td width="24%">
|
|
<p>WM 414</p>
|
|
</td>
|
|
<td width="44%">
|
|
<p>Homeopathy</p>
|
|
</td>
|
|
</tr>
|
|
<tr>
|
|
<td width="24%">
|
|
<p>WM 416</p>
|
|
</td>
|
|
<td width="44%">
|
|
<p>Mind-body therapies</p>
|
|
</td>
|
|
</tr>
|
|
<tr>
|
|
<td width="24%">
|
|
<p>WM 420.5.L6</p>
|
|
</td>
|
|
<td width="44%">
|
|
<p>Logotherapy</p>
|
|
</td>
|
|
</tr>
|
|
<tr>
|
|
<td width="24%">
|
|
<p>WM 420.5.P4</p>
|
|
</td>
|
|
<td width="44%">
|
|
<p>Psychosocial intervention</p>
|
|
</td>
|
|
</tr>
|
|
<tr>
|
|
<td width="24%">
|
|
<p>WM 420.5.S3</p>
|
|
</td>
|
|
<td width="44%">
|
|
<p>Schema therapy</p>
|
|
</td>
|
|
</tr>
|
|
<tr>
|
|
<td width="24%">
|
|
<p>WY 153.7</p>
|
|
</td>
|
|
<td width="44%">
|
|
<p>COVID-19 nursing</p>
|
|
</td>
|
|
</tr>
|
|
<tr>
|
|
<td width="24%">
|
|
<p>WY 172</p>
|
|
</td>
|
|
<td width="44%">
|
|
<p>Developmental Disability Nursing</p>
|
|
</td>
|
|
</tr>
|
|
</tbody>
|
|
</table>
|
|
<p></p>
|
|
<h1>2021 Summer Edition</h1>
|
|
<p>The 2021 summer version will be published in late August 2021. It will encompass the systematic review of WU (Dentistry. Oral Surgery) and WV (Otolaryngology) schedules.</p>
|
|
<p>The <a href="https://www.nlm.nih.gov/class/nlmclassintro.html">PDF version</a> of the NLM Classification was discontinued with the 2019 edition due to low usage.</p>
|
|
<p>To learn more about the <em>NLM Classification</em> see the <a href="https://classification.nlm.nih.gov/static/classification/pdf/nlm_policy_on_classification.pdf"><em>NLM Policy on Classification</em></a>.</p>
|
|
|
|
</div>
|
|
<p class="articleParagraph">
|
|
|
|
|
|
|
|
By
|
|
|
|
|
|
Sharon R. Willis<br />
|
|
Cataloging and Metadata Management Section, Technical Services Division<br />
|
|
|
|
|
|
|
|
|
|
</p>
|
|
</div>
|
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<div class="footer">
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<p class="footerLeft"><span class="footerissn"><strong>ISSN 2161-2986 (Online)</strong> Content not copyrighted; freely reproducible.</span><br/>
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<a href="/">National Library of Medicine</a> 8600 Rockville Pike, Bethesda, MD 20894
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<a href="//www.nih.gov/">NIH</a>,
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<strong>Last updated:</strong> 16 February 2021</p>
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