- Spleen, splenic - see also condition
- Splenectasis (see also Splenomegaly) 789.2
- Splenitis (interstitial) (malignant) (nonspecific) 289.59
- Splenocele 289.59
- Splenomegalia - see Splenomegaly
- Splenomegalic - see condition
- Splenomegaly 789.2
- Splenopathy 289.50
- Splenopneumonia - see Pneumonia
- Splenoptosis 289.59
- Splinter - see Injury, superficial, by site
- Split, splitting
- Spoiled child reaction (see also Disturbance, conduct) 312.1
- Spondylarthritis (see also Spondylosis) 721.90
- Spondylarthrosis (see also Spondylosis) 721.90
- Spondylitis 720.9
- Spondyloarthrosis (see also Spondylosis) 721.90
- Spondylolisthesis (congenital) (lumbosacral) 756.12
- Spondylolysis (congenital) 756.11
- Spondylopathy
- Spondylose rhizomelique 720.0
- Spondylosis 721.90
