| Decompression sickness 993.3 | 
  | Decrease, decreased | 
  |  | 
  | Decubital gangrene (see also Ulcer, pressure) 707.00  [785.4] | 
  | Decubiti (see also Ulcer, pressure) 707.00 | 
  | Decubitus (ulcer) (see also Ulcer, pressure) 707.00 | 
  |  | 
  |  | 
  |  | 
  |  | 
  | Defeminization syndrome 255.2 | 
  |  | 
  |  | 
  | Defibrination syndrome (see also Fibrinolysis) 286.6 | 
  | Deficiency, deficient | 
  |  | 
  | Deficient - see also Deficiency | 
  |  | 
  | Deficit | 
  |  | 
  | Deflection | 
  |  | 
  | Defluvium | 
  |  | 
  |  | 
  |  | 
  | Degeneration, degenerative | 
  |  | 
  | Deglutition | 
  |  | 
  | Degos' disease or syndrome 447.8 | 
  | Degradation disorder, branched-chain amino-acid 270.3 | 
  | Dehiscence | 
  |  | 
  |  | 
  |  | 
  | Deiters' nucleus syndrome 386.19 | 
  |  | 
  | Déjérine-Klumpke paralysis 767.6 | 
  | Déjérine-Roussy syndrome 338.0 | 
  | Déjérine-Sottas disease or neuropathy (hypertrophic) 356.0 | 
  | Déjérine-Thomas atrophy or syndrome 333.0 | 
  | de Lange's syndrome (Amsterdam dwarf, mental retardation, and brachycephaly) 759.89 | 
  | Delay, delayed | 
  |  | 
  | Del Castillo's syndrome (germinal aplasia) 606.0 | 
  |  | 
  | Deletion syndrome | 
  |  | 
  | Delhi (boil) (button) (sore) 085.1 | 
  | Delinquency (juvenile) 312.9 | 
  |  | 
  |  | 
  |  | 
  | Delivery | 
  |  | 
  |  | 
  | Delusions (paranoid) 297.9 | 
  |  | 
  |  | 
  |  | 
  | Demerol dependence (see also Dependence) 304.0 | 
  | Demineralization, ankle (see also Osteoporosis) 733.00 | 
  | Demodex folliculorum (infestation) 133.8 | 
  | de Morgan's spots (senile angiomas) 448.1 | 
  | Demyelinating | 
  |  | 
  | Demyelination, demyelinization | 
  |  | 
  |  | 
  |  | 
  | Dens | 
  |  | 
  | Dense | 
  |  | 
  | Density | 
  |  | 
|  |  |