ICD-10 / XVII Congenital malformations, deformations and chromosomal abnormalities / Q00-Q07 Congenital malformations of the nervous system / Q00 Anencephaly and similar malformationsFrom parent levelsChapterXVIICongenital malformations, deformations and chromosomal abnormalitiesexc.OpenExclusionsinborn errors of metabolism (E70-E90)BlockQ00-Q07Congenital malformations of the nervous systemOpenQ00CategoryBlock Q00-Q07Chapter XVIIAnencephaly and similar malformationsSubcategories