ICD-10 / XVII Congenital malformations, deformations and chromosomal abnormalities / Q20-Q28 Congenital malformations of the circulatory system / Q24 Other congenital malformations of heart / Q24.2 Cor triatriatumFrom parent levelsChapterXVIICongenital malformations, deformations and chromosomal abnormalitiesOpenExclusionsinborn errors of metabolism (E70-E90)BlockQ20-Q28Congenital malformations of the circulatory systemOpenCategoryQ24Other congenital malformations of heartOpenExclusionsendocardial fibroelastosis (I42.4)Q24.2CategoryBlock Q20-Q28Chapter XVIICor triatriatum