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Table of Contents: 2019 SEPTEMBER–OCTOBER No. 430

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NLM Classification 2019 Summer Edition Now Available

Willis SR. NLM Classification 2019 Summer Edition Now Available. NLM Tech Bull. 2019 Sep-Oct;(430):e4.

2019 October 01 [posted]

The 2019 summer version of the NLM Classification, now available, encompasses the systematic review of the following schedules: QW (Microbiology. Immunology) and QX (Parasitology). In addition to the systematic reviews of the QW and QX schedules, other minor additions and changes were made.

Summary Statistics for the 2019 Summer Edition

  • 57 class numbers added
  • 8 schedule outline headers added
  • 109 class number captions or notes modified; indentation levels changed; group labels modified
  • 19 schedule outline headers modified
  • 42 class numbers canceled
  • 3 schedule outline headers deleted
  • 99 index main headings added
  • 481 index entries modified
  • 115 index headings deleted

Class Numbers Added and Canceled

Class Numbers Added —2019 Summer Edition
New Number Class Name Former Number(s)
QS 132.1[Anatomy. Histology. Laws] General coverage (Not Table G)QS 132
QS 133[Anatomy. Histology] Discussion of law (Table G)QS 132
QS 133.1[Anatomy. Histology. Discussion of law] General coverage (Not Table G)QS 132
QV 762Toxic plantsWD 500-530
QW 41Microbial interactions. Host-microbial interactions (General or not elsewhere classified)QW 4
QW 42Microbial virulenceQW 730
QW 142.5.E5EnterococcaceaeNone
QW 160.5[Viruses] Genetic aspectsQW 160
QW 168.5.F4FiloviridaeNone
QW 200Unicellular eukaryota (General or not elsewhere classified)QX 50
QW 205AlveolataNone
QW 208ApicomplexaQX 123-140
QW 210CoccidiaQX 123
QW 212SarcocystidaeNone
QW 214HaemosporidaNone
QW 217CiliophoraQX 151
QW 220OligohymenophoreaNone
QW 225AmoebozoaQX 55
QW 228LoboseaNone
QW 230MycetozoaNone
QW 235DiplomonadidaQX 70
QW 240EuglenozoaNone
QW 243KinetoplastidaNone
QW 250ParabasalideaNone
QW 260StramenopilesNone
*QW 521Allergy and immunology as a profession. Ethics. Peer reviewQW 21
QW 525.5.I4ImmunoprecipitationNone
QW 569Immunologic receptorsQW 570, etc.
QW 573.5.E7EpitopesQW 573
QW 573.5.N4Neoplasm antigensQW 573
QW 574Antigen receptorsQW 573
QW 575.5.A8AutoantibodiesQW 575
QW 575.5.I6ImmunoconjugatesNone
QW 575.5.V5Viral antibodiesQW 575
QW 608Antigen-antibody complex. Immune complex diseasesQW 570; WD 308
QW 630.5.V4VenomsWD 400-430
QW 740Immune system diseases (General or not elsewhere classified)WD 300-330
QW 904Food hypersensitivityWD 310
QW 906Drug hypersensitivityWD 320
QW 910Allergens (General or not elsewhere classified)QW 900
QW 942ImmunizationQW 800-815
QX 47Disease transmission. Disease vectors (General or not elsewhere classified)QW 700
QX 199Invertebrates (General or not elsewhere classified)None
QX 700Chordata (General or not elsewhere classified)None
QX 710BirdsNone
QX 720Mammals (General or not elsewhere classified)None
QX 725ArtiodactylaNone
QX 730CarnivoraNone
QX 735RodentiaNone
QY 60.I5Insects [Laboratory Animals]None
QY 60.M6Mollusca [Laboratory Animals]None
WA 697.1 [Food laws] General coverage (Not Table G)WA 697
WA 700Foodborne diseases (General or not elsewhere classified)WA 695-722
WO 830Bites and stingsWD 400-430
WS 276Juvenile arthritisWE 344-346
WZ 112.5.M2[Collective biography by specialty] MicrobiologistsWZ 112
WZ 112.5.P7[Collective biography by specialty] PsychologistsWZ 112
WZ 112.5.Z7[Collective biography by specialty] ZoologistsWZ 112

*QW 521 was a formerly canceled number that was reinstated.


Class Numbers Canceled—2019 Summer Edition
Canceled Number Class Name Now Classed in
QW 128BacteroidetesQW 50
QW 145Phototrophic bacteriaQW 131
QW 165.5.P2PapillomaviridaeQW 166
QW 168.5.A7ArbovirusesQW 160
QW 190Bacterial and fungal sporesQW 51;QW 180
QW 660BacteriolysisQW 52
QW 730Virulence. InvasivenessQW 42
QX 50Unicellular eukaryota (General or not elsewhere classified)QW 200-260
QX 55AmoebozoaQW 225-230
QX 70Diplomonadida. Trichomonadida. TrypanosomatinaQW 235, QW 250, QW 243
QX 123ApicomplexaQW 208-214
QX 135PlasmodiumQW 214
QX 140ToxoplasmaQW 212
QX 151CiliophoraQW 217-220
QX 207TrichuroideaQX 203
QX 248TrichostrongyloideaQX 243
QX 271OxyuroideaQX 203
QX 469ScorpionsQL 548.7-.72
QX 471SpidersQL 458.4-.42
QX 483TrombiculidaeQX 475
QX 650Insect vectorsQX 500
QZ 65Bacteria. Fungi. Viruses (General) [Pathogenicity]With topic in QW
QZ 85Animal parasites [Pathogenicity]QX 199-735
WD 300[Immunologic and Collagen Diseases. Hypersensitivity] General worksQW 740; QW 900
WD 301[Immunologic and Collagen Diseases. Hypersensitivity] Handbooks. Resource guidesWith topic in form number 39
WD 305Autoimmune diseases (General)QW 545
WD 308Immune complex disease. Immunologic deficiency syndromes (General or not elsewhere classified)QW 608;QW 740
WD 310Food hypersensitivityQW 904
WD 320Drug hypersensitivityQW 906
WD 330Serum sicknessQW 608
WD 400[Animal poisons] General worksQW 630.5.V4
WD 401[Animal poisons] Handbooks. Resource guidesWith topic in form number 39
WD 405Marine formsQW 630.5.V4
WD 410ReptilesQW 630.5.V4
WD 420Spiders. Scorpions. Centipedes. LeechesQW 630.5.V4
WD 430InsectsQW 630.5.V4
WD 500[Plant poisons] General worksQV 762; WA 700
WD 501[Plant poisons] Handbooks. Resource guidesWith topic in form number 39
WD 505ErgotismWA 700
WD 515FavismWA 700
WD 520Mushroom poisoningWA 700
WD 530Milk sicknessWA 700


19th Century Class Numbers Added
New Number Class Name Former Number(s)
QWBAnimal PoisonsWDC


19th Century Class Numbers Canceled
Canceled Number Class Name Now Classed in
WDCAnimal poisons. Plant poisonsQWB; QVB

Systematic Reviews for the 2019 Summer Edition

Highlights from the QW (Microbiology. Immunology) Review

The QW analysis revealed some inconsistency and overlap between parts of the QW and WD (Disorders of Systemic, Metabolic or Environmental Origin, etc.) schedules. For example, both QW and WD had areas with the header Hypersensitivity. Since Hypersensitivity is an immunological response, it is preferable to classify all the works in the QW Immunology Section.

A major partial review of the WD schedule was conducted to consolidate certain subjects in the QW and other schedules. As a result, several WD class numbers were canceled and some new QW numbers were created. Also, two 19th century schedule numbers were made obsolete: WDB Hypersensitivity and WDC Animal poisons. Plant poisons.

Two new numbers were created in other schedules: QV 762 Toxic plants and WA 700 Foodborne diseases (General or not elsewhere classified).

Highlights from the QX (Parasitology) Review

The analysis revealed that, although the QX schedule is labeled as Parasitology, it contained numbers for many different organisms some of which are not parasites. For example, QX 675 indicates it is for Mollusca, but not all Mollusca are parasites. A work on the biology of the squid should not be classed in QX but in the Library of Congress QL classification. As a result of the analysis, “Disease Vectors” was added to the QX Schedule Header to indicate this schedule is about invertebrates and their relationship to medicine. Several new class numbers were created for specific invertebrates. The class numbers in the section on unicellular Eukaroyta were cancelled and reclassed in new numbers in the QW schedule. Related index terms were updated to reflect the change in classification and to provide LC classification when not medically related.

Other 2019 Summer Edition Changes

Examples of additional changes made:

Classification of Laws Related to Food or Beverages

  • WA 697 Pure food laws was broadened to include laws and discussion of laws related to specific types of foods or beverages. It now has a (Table G) annotation to allow for geographic breakdown. WA 697.1 was created for works with no geographic breakdown
  • The notes at WA 32, WA 33, WA 701, and WN 612 were adjusted to provide guidance about classification of laws related to food or beverages
  • Several food index terms were modified to provide guidance about the classification of food legislation

Classification of Laws Related to Anatomy

  • QS 132 Laws concerning dissection. Discussion of laws was broadened to include laws on anatomy. It now has a (Table G) annotation to allow for geographic breakdown. QS 132.1 was created for works with no geographic breakdown
  • QS 133 and QS 133.1 were created for discussion of laws on anatomy

Index Changes for Class numbers that Only Point to a Main Schedule Number

A project was conducted to eliminate alpha only class numbers from the index. Where a specific class number or range was available, it was added. Otherwise, appropriate subindex terms were added with specific class numbers. For example, Bible BS was changed to Bible BS 1-680. Eye WW had the alpha only removed and a subindex term General WW 100 added to the list of subindex terms.

Table G Addition

GH6--Holy Roman Empire was added.

To learn more, see the NLM Classification homepage.

The PDF version will be updated with 2019 winter and summer classification data by the fall of 2019.

By Sharon R. Willis
Cataloging and Metadata Management Section, Technical Services Division

NLM Technical Bulletin National Library of Medicine National Institutes of Health