- Amnesia (retrograde) 780.93
- Amnestic (confabulatory) syndrome 294.0
- Amniocentesis screening (for) V28.2
- Amnion, amniotic - see also condition
- Amnionitis (complicating pregnancy) 658.4
- Amoral trends 301.7
- Amotio retinae (see also Detachment, retina) 361.9
- Ampulla
- Amputation
- Amputee (bilateral) (old) - see also Absence, by site, acquired V49.70
- Amusia 784.69
- Amyelencephalus 740.0
- Amyelia 742.59
- Amygdalitis - see Tonsillitis
- Amygdalolith 474.8
- Amyloid disease or degeneration 277.30
- Amyloidosis (familial) (general) (generalized) (genetic) (primary) 277.30
- Amylopectinosis (brancher enzyme deficiency) 271.0
- Amylophagia 307.52
- Amyoplasia, congenita 756.89
- Amyotonia 728.2
- Amyotrophia, amyotrophy, amyotrophic 728.2
