ICD-10 / XVII Congenital malformations, deformations and chromosomal abnormalities / Q00-Q07 Congenital malformations of the nervous system / Q02 MicrocephalyFrom parent levelsChapterXVIICongenital malformations, deformations and chromosomal abnormalitiesexc.OpenExclusionsinborn errors of metabolism (E70-E90)BlockQ00-Q07Congenital malformations of the nervous systemOpenQ02CategoryBlock Q00-Q07Chapter XVIIMicrocephalyInclusionsHydromicrocephalyMicrencephalonExclusionsMeckel-Gruber syndrome (Q61.9)