• Klinefelter's syndrome 758.7
  • Klinger's disease 446.4
  • Klippel's disease 723.8
  • Klippel-Feil disease or syndrome (brevicollis) 756.16
  • Klippel-Trenaunay syndrome 759.89
  • Klumpke (-Déjérine) palsy, paralysis (birth) (newborn) 767.6
  • Klüver-Bucy (-Terzian) syndrome 310.0
  • Knee - see condition
  • Knifegrinders' rot (see also Tuberculosis) 011.4
  • Knock-knee (acquired) 736.41
  • Knot
  • Knots, surfer 919.8
  • Knotting (of)
  • Knuckle pads (Garrod's) 728.79
  • Köbner's disease (epidermolysis bullosa) 757.39
  • Koch's
  • Koch-Weeks conjunctivitis 372.03
  • Koenig-Wichman disease (pemphigus) 694.4
  • Köhler's disease (osteochondrosis) 732.5
  • Köhler-Mouchet disease (osteoarthrosis juvenilis) 732.5
  • Köhler-Pellegrini-Stieda disease or syndrome (calcification, knee joint) 726.62
  • Koilonychia 703.8