• Maternal condition, affecting fetus or newborn
  • Maternity - see Delivery
  • Matheiu's disease (leptospiral jaundice) 100.0
  • Mauclaire's disease or osteochondrosis 732.3
  • Maxcy's disease 081.0
  • Maxilla, maxillary - see condition
  • May (-Hegglin) anomaly or syndrome 288.2
  • Mayaro fever 066.3
  • Mazoplasia 610.8
  • MBD (minimal brain dysfunction), child (see also Hyperkinesia) 314.9
  • MCAD (medium chain acyl CoA dehydrogenase deficiency) 277.85
  • McArdle (-Schmid-Pearson) disease or syndrome (glycogenosis V) 271.0
  • McCune-Albright syndrome (osteitis fibrosa disseminata) 756.59
  • MCLS (mucocutaneous lymph node syndrome) 446.1
  • McQuarrie's syndrome (idiopathic familial hypoglycemia) 251.2
  • Measles (black) (hemorrhagic) (suppressed) 055.9
  • Meat poisoning - see Poisoning, food
  • Meat-wrappers' asthma 506.9
  • Meatitis, urethral (see also Urethritis) 597.89
  • Meatus, meatal - see condition
  • Meckel's
  • Meconium