| A - Anatomy 
 | Deleted term |  | Concept absorbed by | 
 
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    | A11 - Cells 
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| B - Organisms 
 | Deleted term |  | Concept absorbed by | 
 
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    | B01 - Eukaryota 
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| C - Diseases 
 | Deleted term |  | Concept absorbed by | 
 
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    | C04 - Neoplasms 
 C10 - Nervous System Diseases
 
 C25 - Substance-Related Disorders
 
 
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| D - Chemicals and Drugs 
 | Deleted term |  | Concept absorbed by | 
 
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    | D01 - Inorganic Chemicals 
 D02 - Organic Chemicals
 
 D09 - Carbohydrates
 
 D10 - Lipids
 D12 - Amino Acids, Peptides, and Proteins
 
 D20 - Complex Mixtures
 D23 - Biological Factors
 
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| E - Analytical, Diagnostic and Therapeutic Techniques and Equipment 
 | Deleted term |  | Concept absorbed by | 
 
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    | E02 - Therapeutics 
 E05 - Investigative Techniques
 
 
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| G - Phenomena and Processes 
 | Deleted term |  | Concept absorbed by | 
 
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    | G16 - Biological Phenomena 
 
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| I - Anthropology, Education, Sociology and Social Phenomena 
 | Deleted term |  | Concept absorbed by | 
 
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    | I01 - Social Sciences 
 
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| L - Information Science 
 | Deleted term |  | Concept absorbed by | 
 
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    | L01 - Information Science 
 
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| N - Health Care 
 | Deleted term |  | Concept absorbed by | 
 
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    | N01 - Population Characteristics 
 N03 - Health Care Economics and Organizations
 N06 - Environment and Public Health
 
 
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| SP - Public Health 
 | Deleted term |  | Concept absorbed by | 
 
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    | SP1 - Health Policy, Planning and Management 
 SP3 - Population Studies in Public Health
 
 SP4 - Environmental Health
 SP5 - Epidemiology and Biostatistics
 SP8 - Disasters
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