ICD-10 / XVII Congenital malformations, deformations and chromosomal abnormalities / Q80-Q89 Other congenital malformations / Q80 Congenital ichthyosis / Q80.4 Harlequin fetusFrom parent levelsChapterXVIICongenital malformations, deformations and chromosomal abnormalitiesOpenExclusionsinborn errors of metabolism (E70-E90)BlockQ80-Q89Other congenital malformationsOpenCategoryQ80Congenital ichthyosisOpenExclusionsRefsum disease (G60.1)Q80.4CategoryBlock Q80-Q89Chapter XVIIHarlequin fetus