A diagnosis of congenital heart disease was carried out in the 5.2/1,000 of 53,578 live neonates who were born in the Hospital "Nuestra Señora de Covadonga" from 1-1-1976 to 12-31-1985. A relatively high and low incidences of ventricular and atrial septal defects were respectively found. The 69.1% of heart diseases were identified in the first month of life.