| Subclavian steal syndrome 435.2 | 
  | Subcortical - see condition | 
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  | Subcutaneous, subcuticular - see condition | 
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  | Subdural - see condition | 
  | Subendocardium - see condition | 
  | Subependymoma (M9383/1) 237.5 | 
  |  | 
  | Subglossitis - see Glossitis | 
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  | Subinvolution (uterus) 621.1 | 
  |  | 
  | Sublingual - see condition | 
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  | 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 | 
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  | Subphrenic - see condition | 
  | Subscapular nerve - see condition | 
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  | Subsiding appendicitis 542 | 
  | Substernal thyroid (see also Goiter) 240.9 | 
  |  | 
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  | Subtentorial - see condition | 
  | Subtertian | 
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  | Subthyroidism (acquired) (see also Hypothyroidism) 244.9 | 
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  | Succenturiata placenta - see Placenta, abnormal | 
  | Succussion sounds, chest 786.7 | 
  | Sucking thumb, child 307.9 | 
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  | Sudden | 
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  | Sudeck's atrophy, disease, or syndrome 733.7 | 
  | SUDS (Sudden unexplained death) 798.2 | 
  | Suffocation (see also Asphyxia) 799.01 | 
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  | Sugar | 
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  | Suicide, suicidal (attempted) | 
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  | Suipestifer infection (see also Infection, Salmonella) 003.9 | 
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  | Sulfhemoglobinemia, sulphemoglobinemia (acquired) (congenital) 289.7 | 
  | Sumatran mite fever 081.2 | 
  | Summer - see condition | 
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  | SUNCT (short lasting unilateral neuralgiform headache with conjunctival injection and tearing) 339.05 | 
  | Sunken | 
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