| 
   | 
  Big spleen syndrome  289.4 | 
  Bilateral - see condition  | 
  Bile duct - see condition  | 
  Bile pigments in urine  791.4 | 
  Bilharziasis (see also Schistosomiasis)  120.9 | 
   | 
  Biliary - see condition  | 
  Bilious (attack) - see also Vomiting  | 
   | 
   | 
   | 
  Billroth's disease  | 
   | 
  Bilobate placenta - see Placenta, abnormal  | 
  Bilocular  | 
   | 
  Bing-Horton syndrome (histamine cephalgia)  339.00 | 
  Binswanger's disease or dementia  290.12 | 
  Biörck (-Thorson) syndrome (malignant carcinoid)  259.2 | 
  Biparta, bipartite - see also Imperfect, closure  | 
   | 
  Bird  | 
   | 
  Bird's disease (oxaluria)  271.8 | 
  Birth  | 
   | 
   | 
  Birt-Hogg-Dube syndrome  759.89 | 
   | 
   | 
  Bite(s)  | 
   | 
  Biting  | 
   | 
  Black  | 
   | 
  Blackfan-Diamond anemia or syndrome (congenital hypoplastic anemia)  284.01 | 
   | 
   | 
   | 
  Bladder - see condition  | 
  Blast  | 
   | 
  Blastomycosis, blastomycotic (chronic) (cutaneous) (disseminated) (lung) (pulmonary) (systemic)  116.0 | 
   | 
   | 
   | 
  Bleeder (familial) (hereditary) (see also Defect, coagulation)  286.9 | 
   | 
  Bleeding (see also Hemorrhage)  459.0 | 
   | 
  Blennorrhagia, blennorrhagic - see Blennorrhea  | 
  Blennorrhea (acute)  098.0 | 
   | 
  Blepharelosis (see also Entropion)  374.00 | 
   | 
   | 
   | 
   | 
   | 
  Blepharoconjunctivitis (see also Conjunctivitis)  372.20 | 
   | 
  Blepharophimosis (eyelid)  374.46 | 
   | 
   | 
   | 
   | 
   | 
   | 
   | 
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