| 
  Fusion, fused (congenital)  | 
   | 
  Fusospirillosis (mouth) (tongue) (tonsil)  101 | 
   | 
   | 
  Gain, weight (abnormal) (excessive) (see also Weight, gain)  783.1 | 
  Gaisböck's disease or syndrome (polycythemia hypertonica)  289.0 | 
  Gait  | 
   | 
  Galactocele (breast) (infected)  611.5 | 
   | 
   | 
   | 
   | 
   | 
  Galactosemia (classic) (congenital)  271.1 | 
   | 
   | 
   | 
  Galen's vein - see condition  | 
  Gallbladder - see also condition  | 
   | 
  Gall duct - see condition  | 
   | 
  Gallstone (cholemic) (colic) (impacted) - see also Cholelithiasis  | 
   | 
   | 
   | 
   | 
   | 
  Gamna's disease (siderotic splenomegaly)  289.51 | 
  Gampsodactylia (congenital)  754.71 | 
  Gamstorp's disease (adynamia episodica hereditaria)  359.3 | 
  Gandy-Nanta disease (siderotic splenomegaly)  289.51 | 
  Gang activity, without manifest psychiatric disorder  V71.09 | 
   | 
  Gangliocytoma (M9490/0) - see Neoplasm, connective tissue, benign  | 
  Ganglioglioma (M9505/1) - see Neoplasm, by site, uncertain behavior  | 
   | 
   | 
  Ganglioneuroblastoma (M9490/3) - see Neoplasm, connective tissue, malignant  | 
  Ganglioneuroma (M9490/0) - see also Neoplasm, connective tissue, benign  | 
   | 
  Ganglioneuromatosis (M9491/0) - see Neoplasm, connective tissue, benign  | 
  Ganglionitis  | 
   | 
   | 
   | 
  Gangrene, gangrenous (anemia) (artery) (cellulitis) (dermatitis) (dry) (infective) (moist) (pemphigus) (septic) (skin) (stasis) (ulcer)  785.4 | 
   | 
  Gannister disease (occupational)  502 | 
   | 
  Ganser's syndrome, hysterical  300.16 | 
  Gardner-Diamond syndrome (autoerythrocyte sensitization)  287.2 | 
   | 
  Garré's  | 
   | 
   | 
  Gartner's duct  | 
   | 
   | 
   | 
   | 
   | 
   | 
  Gastrectasis, gastrectasia  536.1 | 
   | 
  Gastric - see condition  | 
  Gastrinoma (M8153/1)  | 
   | 
 |  |