- Streptobacillus moniliformis 026.1
- Streptococcemia 038.0
- Streptococcicosis - see Infection, streptococcal
- Streptococcus, streptococcal - see condition
- Streptoderma 686.00
- Streptomycosis - see Actinomycosis
- Streptothricosis - see Actinomycosis
- Streptothrix - see Actinomycosis
- Streptotrichosis - see Actinomycosis
- Stress 308.9
- Stretching, nerve - see Injury, nerve, by site
- Striae (albicantes) (atrophicae) (cutis distensae) (distensae) 701.3
- Striations of nails 703.8
- Stricture (see also Stenosis) 799.89
- Stridor 786.1
- Stridulous - see condition
- Strippling of nails 703.8
- Stroke 434.91
- Stromatosis, endometrial (M8931/1) 236.0
- Strong pulse 785.9
- Strongyloides stercoralis infestation 127.2
- Strongyloidiasis 127.2
