• Agranulocytosis (see also Neutropenia) 288.09
  • Agraphia (absolute) 784.69
  • Agrypnia (see also Insomnia) 780.52
  • Ague (see also Malaria) 084.6
  • Agyria 742.2
  • Ahumada-del Castillo syndrome (nonpuerperal galactorrhea and amenorrhea) 253.1
  • AIDS 042
  • AIDS virus (disease) (illness) 042
  • AIDS-associated retrovirus (disease) (illness) 042
  • AIDS-associated virus (disease) (illness) 042
  • AIDS-like disease (illness) (syndrome) 042
  • AIDS-related complex 042
  • AIDS-related conditions 042
  • AIDS-related virus (disease) (illness) 042
  • Ailment, heart - see Disease, heart
  • Ailurophobia 300.29
  • AIN I [anal intraepithelial neoplasia I] (histologically confirmed) 569.44
  • AIN II [anal intraepithelial neoplasia II] (histologically confirmed) 569.44
  • AIN III [anal intraepithelial neoplasia III] 230.6
  • Ainhum (disease) 136.0
  • Air
  • Airplane sickness 994.6