• Latent - see condition
  • Lateral - see condition
  • Laterocession - see Lateroversion
  • Lateroflexion - see Lateroversion
  • Lateroversion
  • Lathyrism 988.2
  • Launois' syndrome (pituitary gigantism) 253.0
  • Launois-Bensaude's lipomatosis 272.8
  • Launois-Cleret syndrome (adiposogenital dystrophy) 253.8
  • Laurence-Moon-Biedl syndrome (obesity, polydactyly, and mental retardation) 759.89
  • LAV (disease) (illness) (infection) - see Human immunodeficiency virus (disease) (illness) (infection)
  • LAV/HTLV-III (disease) (illness) (infection) - see Human immunodeficiency virus (disease) (illness) (infection)
  • Lawford's syndrome (encephalocutaneous angiomatosis) 759.6
  • Lax, laxity - see also Relaxation
  • Laxative habit (see also Abuse, drugs, nondependent) 305.9
  • Lazy leukocyte syndrome 288.09
  • LCAD (long chain/very long chain acyl CoA dehydrogenase deficiency, VLCAD) 277.85
  • LCHAD (long chain 3-hydroxyacyl CoA dehydrogenase deficiency) 277.85
  • Lead - see also condition
  • Lead miners' lung 503
  • Leakage
  • Leaky heart - see Endocarditis