• Water-losing nephritis 588.89
  • Waterbrash 787.1
  • Waterhouse (-Friderichsen) disease or syndrome 036.3
  • Watermelon stomach 537.82
  • Wax in ear 380.4
  • Waxy
  • Weak, weakness (generalized) 780.79
  • Wear, worn, tooth, teeth (approximal) (hard tissues) (interproximal) (occlusal) - see also Attrition, teeth 521.10
  • Weather, weathered
  • Web, webbed (congenital) - see also Anomaly, specified type NEC
  • Weber's paralysis or syndrome 344.89
  • Weber-Christian disease or syndrome (nodular nonsuppurative panniculitis) 729.30
  • Weber-Cockayne syndrome (epidermolysis bullosa) 757.39
  • Weber-Dimitri syndrome 759.6
  • Weber-Gubler syndrome 344.89
  • Weber-Leyden syndrome 344.89
  • Weber-Osler syndrome (familial hemorrhagic telangiectasia) 448.0
  • Wedge-shaped or wedging vertebra (see also Osteoporosis) 733.00
  • Wegener's granulomatosis or syndrome 446.4
  • Wegner's disease (syphilitic osteochondritis) 090.0
  • Weight
  • Weightlessness 994.9