ICD-10 / XVII Congenital malformations, deformations and chromosomal abnormalities / Q80-Q89 Other congenital malformations / Q83 Congenital malformations of breastFrom parent levelsChapterXVIICongenital malformations, deformations and chromosomal abnormalitiesexc.OpenExclusionsinborn errors of metabolism (E70-E90)BlockQ80-Q89Other congenital malformationsOpenQ83CategoryBlock Q80-Q89Chapter XVIICongenital malformations of breastExclusionsabsence of pectoral muscle (Q79.8)Subcategories