Major Congenital Anomaly

**Semantic type:** Congenital Abnormality

**Definition:** A major congenital anomaly is a structural or functional defect with the following three characteristics: 1) Of prenatal origin; 2) Present at the time of live birth or fetal demise, or in utero; 3) Affecting (or has the propensity to affect) the health, survival, or physical or cognitive functioning of the individual.