139Multiple Pituitary Hormome Deficiency (MPHD) / Anterior Pituitary Hypoplasia (腦下垂體發育不全症)
140Multiple Sclerosis (MS) (多發性硬化症)
141Multiple System Atrophy (MSA) - Pakinsonian Subtype (多重系統退化症-非典型巴金森症)
142Myasthenia Gravis (MG) (重症肌無力症)
143Myhre Syndrome (Myhre綜合症)