- Senility 797
- Sensation
- Sense loss (touch) (see also Disturbance, sensation) 782.0
- Sensibility disturbance NEC (cortical) (deep) (vibratory) (see also Disturbance, sensation) 782.0
- Sensitive dentine 521.89
- Sensitiver Beziehungswahn 297.8
- Sensitivity, sensitization - see also Allergy
- Sensory
- Separation
- Sepsis (generalized) 995.91
- Septate - see also Septum
- Septic - see also condition
- Septicemia, septicemic (generalized) (suppurative) 038.9
- Septum, septate (congenital) - see also Anomaly, specified type NEC
- Sequestration
- Sequestrum
- Sequoiosis asthma 495.8
- Serology for syphilis
- Seroma - (postoperative) (non-infected) 998.13
- Seropurulent - see condition
- Serositis, multiple 569.89
- Serotonin syndrome 333.99
