- Steatosis 272.8
- Steele-Richardson (-Olszewski) Syndrome 333.0
- Stein's syndrome (polycystic ovary) 256.4
- Stein-Leventhal syndrome (polycystic ovary) 256.4
- Steinbrocker's syndrome (see also Neuropathy, peripheral, autonomic) 337.9
- Steinert's disease 359.21
- STEMI (ST elevation myocardial infarction) (see also - Infarct, myocardium, ST elevation) 410.9
- Stenocardia (see also Angina) 413.9
- Stenocephaly 756.0
- Stenosis (cicatricial) - see also Stricture
- Stercolith (see also Fecalith) 560.39
- Stercoraceous, stercoral ulcer 569.82
- Stereopsis, defective
- Stereotypies NEC 307.3
- Sterility
- Sterilization, admission for V25.2
- Sternalgia (see also Angina) 413.9
- Sternopagus 759.4
- Sternum bifidum 756.3
- Sternutation 784.99
- Steroid
- Stevens-Johnson disease or syndrome (erythema multiforme exudativum) 695.1
