• Ataxia-telangiectasia 334.8
  • Atelectasis (absorption collapse) (complete) (compression) (massive) (partial) (postinfective) (pressure collapse) (pulmonary) (relaxation) 518.0
  • Ateleiosis, ateliosis 253.3
  • Atelia - see Distortion
  • Ateliosis 253.3
  • Atelocardia 746.9
  • Atelomyelia 742.59
  • Athelia 757.6
  • Atheroembolism
  • Atheroma, atheromatous (see also Arteriosclerosis) 440.9
  • Atheromatosis - see also Arteriosclerosis
  • Atherosclerosis - see Arteriosclerosis
  • Athetosis (acquired) 781.0
  • Athlete's
  • Athletic team examination V70.3
  • Athrepsia 261
  • Athyrea (acquired) (see also Hypothyroidism) 244.9
  • Athyreosis (congenital) 243
  • Athyroidism (acquired) (see also Hypothyroidism) 244.9
  • Atmospheric pyrexia 992.0
  • Atonia, atony, atonic
  • Atopy NEC V15.09