ICD-10 / XVII Congenital malformations, deformations and chromosomal abnormalities / Q80-Q89 Other congenital malformations / Q83 Congenital malformations of breast / Q83.2 Absent nippleFrom parent levelsChapterXVIICongenital malformations, deformations and chromosomal abnormalitiesOpenExclusionsinborn errors of metabolism (E70-E90)BlockQ80-Q89Other congenital malformationsOpenCategoryQ83Congenital malformations of breastOpenExclusionsabsence of pectoral muscle (Q79.8)Q83.2CategoryBlock Q80-Q89Chapter XVIIAbsent nipple