| Histiocytoma (M8832/0) -  see also Neoplasm, skin, benign | 
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  | Histiocytosis (acute) (chronic) (subacute) 277.89 | 
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  | History (personal) of | 
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  | HIT (heparin-induced thrombocytopenia) 289.84 | 
  | HIV infection (disease) (illness) - see Human immunodeficiency virus (disease) (illness) (infection) | 
  | Hives (bold) (see also Urticaria) 708.9 | 
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  | Hobnail liver - see Cirrhosis, portal | 
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  | Hodgkin's | 
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  | Hodgson's disease (aneurysmal dilatation of aorta) 441.9 | 
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  | Hoffa (-Kastert) disease or syndrome (liposynovitis prepatellaris) 272.8 | 
  | Hoffmann's syndrome 244.9  [359.5] | 
  | Hoffmann-Bouveret syndrome (paroxysmal tachycardia) 427.2 | 
  | Hole | 
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  | Holla disease (see also Spherocytosis) 282.0 | 
  | Holländer-Simons syndrome (progressive lipodystrophy) 272.6 | 
  | Hollow foot (congenital) 754.71 | 
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  | Holmes' syndrome (visual disorientation) 368.16 | 
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  | Holthouse's hernia - see Hernia, inguinal | 
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  | Homologous serum jaundice (prophylactic) (therapeutic) - see Hepatitis, viral | 
  | Homosexuality - omit code | 
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  | Homozygous Hb-S disease 282.61 | 
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  | HOOD (hereditary osteo-onychodysplasia) 756.89 | 
  | Hooded | 
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  | Hookworm (anemia) (disease) (infestation) - see Ancylostomiasis | 
  | Hoppe-Goldflam syndrome 358.00 | 
  | Hordeolum (external) (eyelid) 373.11 | 
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  | Horn | 
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  | Horner's | 
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  | Horseshoe kidney (congenital) 753.3 | 
  | Horton's | 
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  | Hospitalism (in children) NEC 309.83 | 
  | Hourglass contraction, contracture | 
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  | Household circumstance affecting care V60.9 | 
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  | Housing circumstance affecting care V60.9 | 
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  | Huchard's disease (continued arterial hypertension) 401.9 | 
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  | Huguier's disease (uterine fibroma) 218.9 | 
  | Hum, venous - omit code | 
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