Generally non-comparable; comparative and superlative forms are rarely, if ever, used.
Translations
He has a congenital heart defect.
У него врождённый порок сердца.
Definitions
Present from birth, especially referring to a disease or physical abnormality. The child was diagnosed with a congenital heart defect shortly after birth.
Ingrained or inherent in someone's nature, often used to describe a characteristic or trait. He has a congenital ability to make people feel at ease.