- Accretio cordis (nonrheumatic) 423.1
- Accretions on teeth 523.6
- Accumulation secretion, prostate 602.8
- Acephalia, acephalism, acephaly 740.0
- Acephalic 740.0
- Acephalobrachia 759.89
- Acephalocardia 759.89
- Acephalocardius 759.89
- Acephalochiria 759.89
- Acephalochirus 759.89
- Acephalogaster 759.89
- Acephalostomus 759.89
- Acephalothorax 759.89
- Acephalus 740.0
- Acetonemia 790.6
- Acetonglycosuria 982.8
- Acetonuria 791.6
- Achalasia 530.0
- Achard-Thiers syndrome (adrenogenital) 255.2
- Ache(s) - see Pain
- Acheilia 750.26
- Acheiria 755.21