- Adenophlegmon 683
- Adenosalpingitis 614.1
- Adenosarcoma (M8960/3) 189.0
- Adenosclerosis 289.3
- Adenosis
- Adentia (complete) (partial) (see also Absence, teeth) 520.0
- Adherent
- Adhesion(s), adhesive (postinfectional) (postoperative)
- Adie (-Holmes) syndrome (tonic pupillary reaction) 379.46
- Adiponecrosis neonatorum 778.1
- Adiposa dolorosa 272.8
- Adiposalgia 272.8
- Adiposis
- Adiposity 278.02
- Adiposogenital dystrophy 253.8
- Adjustment
- Administration, prophylactic
- Admission (encounter)
- Adnexitis (suppurative) (see also Salpingo-oophoritis) 614.2
- Adolescence NEC V21.2
- Adoption
- Adrenal gland - see condition