- Dumbness (see also Aphasia) 784.3
- Dumdum fever 085.0
- Dumping syndrome (postgastrectomy) 564.2
- Duodenitis (nonspecific) (peptic) 535.60
- Duodenocholangitis 575.8
- Duodenum, duodenal - see condition
- Duplay's disease, periarthritis, or syndrome 726.2
- Duplex - see also Accessory
- Duplication - see also Accessory
- Dupré's disease or syndrome (meningism) 781.6
- Dupuytren's
- Durand-Nicolas-Favre disease (climatic bubo) 099.1
- Durotomy, incidental (inadvertent) (see also Tear, dural) 349.31
- Duroziez's disease (congenital mitral stenosis) 746.5
- Dust
- Dutton's
- Dwarf, dwarfism 259.4
- Dyke-Young anemia or syndrome (acquired macrocytic hemolytic anemia) (secondary) (symptomatic) 283.9
- Dynia abnormality (see also Defect, coagulation) 286.9
- Dysacousis 388.40
- Dysadrenocortism 255.9
- Dysarthria 784.51
