| A - Anatomy 
 | Changed terms |  | Replaced-by | 
 
 | 
| A08 - Nervous System 
 
 | 
| C - Diseases 
 | Changed terms |  | Replaced-by | 
 
 | 
    | C05 - Musculoskeletal Diseases
 C08 - Respiratory Tract Diseases
 C10 - Nervous System Diseases
 C14 - Cardiovascular Diseases
 C16 - Congenital, Hereditary, and Neonatal Diseases 
        and Abnormalities
 C20 - Immune System Diseases
 
 | 
| D - Chemicals and Drugs 
 | Changed terms |  | Replaced-by | 
 
 | 
    | D03 - Heterocyclic Compounds
 D08 - Enzymes and Coenzymes
 D12 - Amino Acids, Peptides, and Proteins
 D20 - Complex Mixtures
 D23 - Biological Factors
 
 | 
| E - Analytical, Diagnostic and Therapeutic Techniques and Equipment 
 | Changed terms |  | Replaced-by | 
 
 | 
| E01 - Diagnosis 
 E04 - Surgical Procedures, Operative
 
 
 | 
| F - Psychiatry and Psychology 
 | Changed terms |  | Replaced-by | 
 
 | 
| F02 - Psychological Phenomena and Processes 
 F04 - Behavioral Disciplines and Activities
 
 
 | 
| G - Phenomena and Processes 
 | Changed terms |  | Replaced-by | 
 
 | 
| G03 - Metabolic Phenomena 
 G05 - Genetic Phenomena
 
 G07 - Physiological Phenomena
 G11 - Musculoskeletal and Neural Physiological Phenomena
 
 | 
| HP - Homeopathy 
 | Changed terms |  | Replaced-by | 
 
 | 
| HP1 - Homeopathy 
 HP2 - Homeopathic Clinics
 HP3 - Homeopathic Therapeutics
 HP4 - Materia Medica
 HP6 - Homeopathic Semiology
 
 | 
| L - Information Science 
 | Changed terms |  | Replaced-by | 
 
 | 
| L01 - Information Science 
 
 | 
| M - Named Groups 
 | Changed terms |  | Replaced-by | 
 
 | 
| M01 - Persons 
 
 | 
| N - Health Care 
 | Changed terms |  | Replaced-by | 
 
 | 
    | N01 - Population Characteristics
 N02 - Health Care Facilities, Manpower, and Services
 N04 - Health Services Administration
 
 N06 - Environment and Public Health
 
   | 
| SH - Science and Health 
 | Changed terms |  | Replaced-by | 
 
 | 
| SH1 - Health Sciences, Technology and Innovation Management 
 
 | 
| SP - Public Health 
 | Changed terms |  | Replaced-by | 
 
 | 
    | SP1 - Health Policy, Planning and Management
 SP2 - Health Care (Public Health)
 SP3 - Population Studies in Public Health
 
 SP4 - Environmental Health
 SP6 - Nutrition, Public Health
 SP8 - Disasters
 SP9 - Health Law
 
 
 | 
| V - Publication Characteristics 
 | Changed terms |  | Replaced-by | 
 
 | 
| V03 - Study Characteristics 
 
 | 
| VS - Health Surveillance 
 | Changed terms |  | Replaced-by | 
 
 | 
| VS1 - Health Surveillance System 
 VS2 - Health Surveillance of Products
 
 VS4 - Environmental Health Surveillance
 
 
 | 
| Z - Geographicals 
 | Changed terms |  | Replaced-by | 
 
 | 
| Z01 - Geographic Locations 
 
 |