From parent levels
ChapterXVIICongenital malformations, deformations and chromosomal abnormalitiesOpen
Exclusions
- inborn errors of metabolism (E70-E90)
BlockQ20-Q28Congenital malformations of the circulatory systemOpen
CategoryQ21Congenital malformations of cardiac septaOpen
Exclusions
- acquired cardiac septal defect (I51.0)