- Subdural - see condition
- Subendocardium - see condition
- Subependymoma (M9383/1) 237.5
- Suberosis 495.3
- Subglossitis - see Glossitis
- Subhemophilia 286.0
- Subinvolution (uterus) 621.1
- Sublingual - see condition
- Sublinguitis 527.2
- Subluxation - see also Dislocation, by site
- Submaxillary - see condition
- Submersion (fatal) (nonfatal) 994.1
- Submissiveness (undue), in child 313.0
- Submucous - see condition
- Subnormal, subnormality
- Subphrenic - see condition
- Subscapular nerve - see condition
- Subseptus uterus 752.3
- Subsiding appendicitis 542
- Substernal thyroid (see also Goiter) 240.9
- Substitution disorder 300.11
- Subtentorial - see condition
