ICD-10 / XVII Congenital malformations, deformations and chromosomal abnormalities / Q20-Q28 Congenital malformations of the circulatory system / Q20 Congenital malformations of cardiac chambers and connectionsFrom parent levelsChapterXVIICongenital malformations, deformations and chromosomal abnormalitiesexc.OpenExclusionsinborn errors of metabolism (E70-E90)BlockQ20-Q28Congenital malformations of the circulatory systemOpenQ20CategoryBlock Q20-Q28Chapter XVIICongenital malformations of cardiac chambers and connectionsExclusionsdextrocardia with situs inversus (Q89.3)mirror-image atrial arrangement with situs inversus (Q89.3)Subcategories