| B – Organisms | 
| Changed descriptors | Replaced-by | 
| B01 – Eukaryota | 
| Debaromyces | Debaryomyces | 
| Pimenta | Genus Pimenta | 
| B03 – Bacteria | 
| Clostridium difficile | Clostridioides difficile | 
| Pectobacterium chrysanthemi | Dickeya chrysanthemi | 
| C – Diseases | 
| Changed descriptors | Replaced-by | 
| C08 – Respiratory Tract Diseases | 
| Respiratory Distress Syndrome, Adult | Respiratory Distress Syndrome | 
| C23 – Pathological Conditions | 
| Infantile Apparent Life-Threatening Event | Brief, Resolved, Unexplained Event | 
| D – Chemicals and Drugs | 
| Changed descriptors | Replaced-by | 
| D08 – Enzymes and Coenzymes | 
| Aldehyde Dehydrogenase 1 | Aldehyde Dehydrogenase 1 Family | 
| Pyruvate Dehydrogenase (Acetyl-Transferring) Kinase | Pyruvate Dehydrogenase Acetyl-Transferring Kinase | 
| RNA Replicase | RNA-Dependent RNA Polymerase | 
| Site-Specific DNA-Methyltransferase (Cytosine-N(4)-Specific) | Site-Specific DNA-Methyltransferase (Cytosine-N4-Specific) | 
| F – Psychiatry and Psychology | 
| Changed descriptors | Replaced-by | 
| F01 – Behavior and Behavior Mechanisms | 
| Social Distance | Psychological Distance | 
| Bonding, Human-Pet | Human-Animal Bond | 
| M – Named Groups | 
| Changed descriptors | Replaced-by | 
| M01 – Persons | 
| Alaska Natives | Alaskan Natives | 
| Mentally Disabled Persons | Persons with Mental Disabilities | 
| SP – Public Health | 
| Descritores alterados | Substituídos por | 
| SP4 – Environmental Health | 
| Impervious Lining | Waterproof Coating for Landfills | 
| Neutralization | Effluent Neutralization | 
| Transitions | Waterway Transitions |