• Autophony 388.40
  • Autosensitivity, erythrocyte 287.2
  • Autotopagnosia 780.99
  • Autotoxemia 799.89
  • Autumn - see condition
  • Avellis' syndrome 344.89
  • Aviators
  • Avitaminosis (multiple NEC) (see also Deficiency, vitamin) 269.2
  • Avulsion (traumatic) 879.8
  • Awaiting organ transplant status V49.83
  • Awareness of heart beat 785.1
  • Axe grinders' disease 502
  • Axenfeld's anomaly or syndrome 743.44
  • Axilla, axillary - see also condition
  • Axonotmesis - see Injury, nerve, by site
  • Ayala's disease 756.89
  • Ayerza's disease or syndrome (pulmonary artery sclerosis with pulmonary hypertension) 416.0
  • Azoospermia 606.0
  • Azorean disease (of the nervous system) 334.8
  • Azotemia 790.6
  • Aztec ear 744.29
  • Azygos lobe, lung (fissure) 748.69