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2011 MARCH–APRIL No. 379
April 28, 2011 [posted]

NLM Classification 2011 Edition Now Available

2011 marks the 60th anniversary of the NLM Classification. See the Historical Development //

The NLM Classification incorporates all additions and changes to the schedules and index from April 2010 through March 2011. The PDF version will be updated with 2011 classification data by the end of May 2011.

A new link was added to the NLM Classification homepage for a cumulative list of new class numbers added from 2002 (year the NLM Classification was first published in electronic form) through the current year.

The WL (Nervous System) and WM (Psychiatry) schedules were the major areas of focus for the 2011 edition.

Some WL and WM class number captions and notes were revised to better reflect the scope of the number. For example:
  • At WL 108, the caption Physiology of sleep was augmented with Sleep disorders.
  • At WL 359, the caption Degenerative was changed to Parkinsonian disorders.
  • At WM 30, the caption Administrative psychiatry was changed to Mental health services.
  • Ethics was moved from the caption at WM 62 and affixed to the caption at WM 21.
  • At WM 175, the caption was changed from Anorexia nervosa. Bulimia to Eating Disorders.
  • At WM 188, the note was changed from: Classify here material on all disorders of sleep regardless of severity to Classify here material on the psychological aspects of sleep disorders.
  • A note was added to WM 203.5: Classify here works on the adult alone. Classify works dealing with autistic disorder in both children and adults or in children alone at WS 350.8.P4.
  • At WM 611, the caption was changed from Psychosexual dysfunctions to Psychiatric aspects of sexuality.
Table G (geographic breakdown) is now permitted with WM 30.

Class Numbers Added and Canceled

Forty-six (46) new class numbers were added and three (3) class numbers were canceled.

Class Numbers Added — 2011

New Number Class Name Former Number in the Index
WL 102.3 Neural stem cells None
WL 103.3 Biofeedback WL 103
WL 141.5 [Neurologic examination. Diagnosis. Diagnostic methods] Specific diagnostic methods, A-Z WL 141
WL 141.5.C4 Cerebral angiography WL 141
WL 141.5.C48 Cerebral ventriculography WL 141
WL 141.5.M2 Magnetic resonance imaging WL 141
WL 141.5.M24 Magnetoencephalography WL 141
WL 141.5.N4 Neuroendoscopy WL 141
WL 141.5.N46 Neuropsychological tests WL 141
WL 141.5.N47 Neuroradiography WL 141
WL 141.5.P8 Pneumoencephalography WL 141
WL 141.5.T7 Transcranial magnetic stimulation WL 141
WL 301 Central nervous system diseases WL 300
WL 337 Physiology of mental processes Various numbers
WL 340.3 Speech therapy. Language therapy WL 340.2
WL 356 Brain ischemia. Stroke WL 355
WL 357 Carotid artery diseases WL 355
WL 358.5 Neurodegenerative diseases (General or not elsewhere classified) WL 359
WL 359.5 Huntington disease WL 390
WL 402 Spinal cord diseases WL 400
WL 403 Spinal cord injuries WL 400
WM 30.1 [Mental health services] General coverage (Not Table G) WM 30
WM 30.2 Administration of services and health personnel WM 30
WM 101 Mental health (General) WM 105
WM 143 Psychological interview WM 141
WM 171.5 Depression. Depressive disorder WM 171
WM 172.4 Psychological stress WM 172
WM 172.5 Stress disorders WM 172
WM 190.5 [Personality disorders] Special topics, A-Z WM 190
WM 190.5.A2 Antisocial personality disorder WM 190
WM 190.5.B5 Borderline personality disorder WM 190
WM 190.5.C5 Compulsive personality disorder WM 190
WM 190.5.D3 Dependent personality disorder. Codependency WM 190
WM 190.5.I6 Impulse control disorders. Gambling. Fire setting behavior WM 190
WM 420.5.N3 Narrative therapy None
WM 420.5.N4 Neurolinguistic therapy None
WM 420.5.P3 Personal construct therapy None
WM 427 Spiritual and religious therapy WM 61
WM 460.2 Psychoanalytic theory (General or not elsewhere classified) WM 460
WM 460.5.S8 Superego. Morals WM 460.5.R3
WM 460.5.T7 Transactional analysis WM 460.6
WM 475.3 Speech therapy. Language therapy WM 475
WM 475.7 Stuttering WM 475
WM 607 Incest WM 610
WN 250.5.R15 Radiosurgery WL 368
WS 350.8.P4 Pervasive development disorders WS 350

Class Numbers Canceled— 2011

Canceled Number Class Name Now Classed in
WL 30 Administration of services Various numbers
WM 145.5.C3 Cattell personality factor questionnaire WM 145.5.M6
WM 202 Functional Not applicable

Table G (Geographic Notations)

One (1) geographic cutter was added to the Historical Geographic Locations section of Table G (Geographic Notations)
AC7-- Confederate States of America

One (1) geographic cutter was revised:
Byelarus changed to Belarus

Other Changes to the Schedule

Changes were made to other class schedules. For example:

All index entries pertaining to the aforementioned schedule additions and changes were modified.

Changes to the Index

Sixty-nine (69) new index entries were created of which forty-one (41) are from the 2011 MeSH; the remainder are MeSH terms from previous years. All main index headings are linked to the 2011 vocabulary in the MeSH Browser.

New Index Entries:
Acute Kidney Injury
Airway Management
Anxiety, Separation
Blood Safety
Body Dysmorphic Disorders
Brain Waves
Cardiac Resynchronization Therapy
Clinical Coding
Cognitive Science
Dental Anxiety
Enzyme Replacement Therapy
Enzyme Therapy
Feedback, Physiological
Feedback, Psychological
Food Safety
General Practice
General Practitioners
Gynecological Examination
Hand-Assisted Laparoscopy
Head Injuries, Closed
Health Communication
Horticultural Therapy
Hydrophobic and Hydrophilic Interactions
Infant Behavior
Inhalant Abuse
International Classification of Diseases
Memory, Long-Term
Meningitis, Bacterial
Millon Clinical Multiaxial Inventory
Molecular Targeted Therapy
Myotonic Dystrophy
Neglected Diseases
Neural Stem Cells
Neurolinguistic Programming
Optic Disk
Orthognathic Surgery
Osteoporotic Fractures
Otoacoustic Emissions, Spontaneous
Parkinsonian Disorders
Performance-Enhancing Substances
Perioperative Period
Peripheral Arterial Disease
Personal Construct Theory
Pleuropneumonia, Contagious
Physicians, Primary Care
Primary Care Nursing
Professional Misconduct
Psychomotor Agitation
Pupil Disorders
Rett Syndrome
Standard of Care
Stem Cell Research
Synthetic Biology
Taste Disorders
Tumor Microenvironment
Ultrasonography, Doppler, Transcranial
Veterans Health
Visual Field Tests

Numerous main index entries and cross references were modified to reflect changes in the MeSH vocabulary. For example:

NLM Classification index entries with Library of Congress Classification S (Agriculture) schedule class numbers were reviewed for accuracy and relevance.

To learn more about the NLM Classification see the Fact Sheet.

By Sharon Willis
Cataloging Section

Willis, S. NLM Classification 2011 Edition Now Available. NLM Tech Bull. 2011 Mar-Apr;(379):e26.

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