• Bostock's catarrh (see also Fever, hay) 477.9
  • Boston exanthem 048
  • Botalli, ductus (patent) (persistent) 747.0
  • Bothriocephalus latus infestation 123.4
  • Botulism 005.1
  • Bouba (see also Yaws) 102.9
  • Bouffée délirante 298.3
  • Bouillaud's disease or syndrome (rheumatic heart disease) 391.9
  • Bourneville's disease (tuberous sclerosis) 759.5
  • Boutonneuse fever 082.1
  • Boutonniere
  • Bouveret (-Hoffmann) disease or syndrome (paroxysmal tachycardia) 427.2
  • Bovine heart - see Hypertrophy, cardiac
  • Bowel - see condition
  • Bowen's
  • Bowing
  • Bowleg(s) 736.42
  • Boyd's dysentery 004.2
  • Brachial - see condition
  • Brachman-de Lange syndrome (Amsterdam dwarf, intellectual disabilities, and brachycephaly) 759.89
  • Brachycardia 427.89
  • Brachycephaly 756.0