| 
   | 
  Cyclothymic personality  301.13 | 
   | 
  Cyesis - see Pregnancy  | 
  Cylindroma (M8200/3) - see also Neoplasm, by site, malignant  | 
   | 
   | 
   | 
  Cynanche  | 
   | 
   | 
  Cyphosis - see Kyphosis  | 
  Cyprus fever (see also Brucellosis)  023.9 | 
  Cyriax's syndrome (slipping rib)  733.99 | 
  Cyst (mucus) (retention) (serous) (simple)  | 
   | 
  Cystadenocarcinoma (M8440/3) - see also Neoplasm, by site, malignant  | 
   | 
  Cystadenofibroma (M9013/0)  | 
   | 
  Cystadenoma (M8440/0) - see also Neoplasm, by site, benign  | 
   | 
   | 
   | 
  Cystic - see also condition  | 
   | 
   | 
  Cysticercosis (mammary) (subretinal)  123.1 | 
   | 
   | 
  Cystinosis (malignant)  270.0 | 
   | 
  Cystitis (bacillary) (colli) (diffuse) (exudative) (hemorrhagic) (purulent) (recurrent) (septic) (suppurative) (ulcerative)  595.9 | 
   | 
  Cystocele  | 
   | 
  Cystoid  | 
   | 
   | 
  Cystoma (M8440/0) - see also Neoplasm, by site, benign  | 
   | 
   | 
   | 
  Cystopyelitis (see also Pyelitis)  590.80 | 
   | 
  Cystosarcoma phyllodes (M9020/1)  238.3 | 
   | 
   | 
   | 
  Cystourethritis (see also Urethritis)  597.89 | 
  Cystourethrocele (see also Cystocele)  | 
   | 
  Cytomegalic inclusion disease  078.5 | 
   | 
  Cytomycosis, reticuloendothelial (see also Histoplasmosis, American)  115.00 | 
   | 
   | 
  Daae (-Finsen) disease (epidemic pleurodynia)  074.1 | 
   | 
  Da Costa's syndrome (neurocirculatory asthenia)  306.2 | 
  Dacryoadenitis, dacryadenitis  375.00 | 
   | 
   | 
   | 
   | 
   | 
  Dacryolith, dacryolithiasis  375.57 | 
   | 
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