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   | 
  Lennox-Gastaut syndrome  345.0 | 
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  Lennox's syndrome (see also Epilepsy)  345.0 | 
  Lens - see condition  | 
  Lenticonus (anterior) (posterior) (congenital)  743.36 | 
  Lenticular degeneration, progressive  275.1 | 
  Lentiglobus (posterior) (congenital)  743.36 | 
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  Leontiasis  | 
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  Léopold-Lévi's syndrome (paroxysmal thyroid instability)  242.9 | 
  Lepore hemoglobin syndrome  282.49 | 
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  Lepromatous leprosy  030.0 | 
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  Leptocytosis, hereditary  282.49 | 
  Leptomeningitis (chronic) (circumscribed) (hemorrhagic) (nonsuppurative) (see also Meningitis)  322.9 | 
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  Leptomeningopathy (see also Meningitis)  322.9 | 
  Leptospiral - see condition  | 
  Leptospirochetal - see condition  | 
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  Leptothricosis - see Actinomycosis  | 
  Leptothrix infestation - see Actinomycosis  | 
  Leptotricosis - see Actinomycosis  | 
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  Leriche's syndrome (aortic bifurcation occlusion)  444.0 | 
  Lermoyez's syndrome (see also Disease, Ménière's)  386.00 | 
  Lesbianism - omit code  | 
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  Lesch-Nyhan syndrome (hypoxanthine-guanine-phosphoribosyltransferase deficiency)  277.2 | 
  Lesion(s)  | 
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  Lethargic - see condition  | 
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  Letterer-Siwe disease (acute histiocytosis X) (M9722/3)  202.5 | 
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  Leucosarcoma (M9850/3)  207.8 | 
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  Leukemia, leukemic (congenital) (M9800/3)  208.9 | 
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  Leukemoid reaction (basophilic) (lymphocytic) (monocytic) (myelocytic)(neutrophilic)  288.62 | 
  Leukoclastic vasculitis  446.29 | 
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  Leukocythemia - see Leukemia  | 
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