| 
   | 
  Crystallopathy  | 
   | 
   | 
  Csillag's disease (lichen sclerosus et atrophicus)  701.0 | 
   | 
  Cubitus  | 
   | 
  Cultural deprivation  V62.4 | 
   | 
  Curling's ulcer - see Ulcer, duodenum  | 
   | 
  Curschmann (-Batten) (-Steinert) disease or syndrome  359.21 | 
  Curvature  | 
   | 
  Cushing's  | 
   | 
  Cushingoid due to steroid therapy  | 
   | 
  Cut (external) - see Wound, open, by site  | 
  Cutaneous - see also condition  | 
   | 
  Cutis - see also condition  | 
   | 
   | 
   | 
   | 
  Cycle  | 
   | 
   | 
   | 
   | 
   | 
  Cyclitis (see also Iridocyclitis)  364.3 | 
   | 
  Cyclokeratitis - see Keratitis  | 
   | 
   | 
   | 
   | 
   | 
   | 
  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  | 
   | 
 |  |