| Shunt (status) | 
  |  | 
  | Shutdown | 
  |  | 
  |  | 
  | Shy-Drager syndrome (orthostatic hypotension with multisystem degeneration) 333.0 | 
  | Sialadenitis (any gland) (chronic) (supportive) 527.2 | 
  |  | 
  | Sialadenosis, periodic 527.2 | 
  |  | 
  |  | 
  |  | 
  | Sialoadenitis (see also Sialadenitis) 527.2 | 
  |  | 
  | Sialodochitis (fibrinosa) 527.2 | 
  | Sialodocholithiasis 527.5 | 
  |  | 
  | Sialorrhea (see also Ptyalism) 527.7 | 
  |  | 
  |  | 
  |  | 
  |  | 
  |  | 
  |  | 
  | Sicca syndrome (keratoconjunctivitis) 710.2 | 
  |  | 
  |  | 
  | Sickle-cell | 
  |  | 
  | Sicklemia (see also Disease, sickle-cell) 282.60 | 
  |  | 
  | Sickness | 
  |  | 
  |  | 
  | Sideropenia (see also Anemia, iron deficiency) 280.9 | 
  | Siderosis (lung) (occupational) 503 | 
  |  | 
  | Siegal-Cattan-Mamou disease (periodic) 277.31 | 
  | Siemens' syndrome | 
  |  | 
  | Sighing respiration 786.7 | 
  | Sigmoid | 
  |  | 
  | Sigmoiditis - see Enteritis | 
  | Silfverskiöld's syndrome 756.50 | 
  | Silicosis, silicotic (complicated) (occupational) (simple) 502 | 
  |  | 
  | Silicotuberculosis (see also Tuberculosis) 011.4 | 
  | Silo fillers' disease 506.9 | 
  | Silver's syndrome (congenital hemihypertrophy and short stature 759.89 | 
  | Silver wire arteries, retina 362.13 | 
  | Silvestroni-Bianco syndrome (thalassemia minima) 282.49 | 
  |  | 
  | Simmonds' cachexia or disease (pituitary cachexia) 253.2 | 
  | Simons' disease or syndrome (progressive lipodystrophy) 272.6 | 
  | Simple, simplex - see condition | 
  | Sinding-Larsen disease (juvenile osteopathia patellae) 732.4 | 
  | Singapore hemorrhagic fever 065.4 | 
  | Singers' node or nodule 478.5 | 
  | Single | 
  |  | 
  |  | 
  |  | 
  | Sinus - see also Fistula | 
  |  | 
  | Sinuses, Rokitansky-Aschoff (see also Disease, gallbladder) 575.8 | 
  | Sinusitis (accessory) (nasal) (hyperplastic) (nonpurulent) (purulent) (chronic) 473.9 | 
  |  | 
|  |  |