Congenital malformations and deformations of nervous system

Neural tube defect	Anencephaly Acephaly Acrania Acalvaria Iniencephaly Encephalocele Chiari malformation
Other	Microcephaly Congenital hydrocephalus Dandy–Walker syndrome other reduction deformities Holoprosencephaly Lissencephaly Microlissencephaly Pachygyria Hydranencephaly Agenesis of the corpus callosum Septo-optic dysplasia Megalencephaly Hemimegalencephaly CNS cyst Porencephaly Schizencephaly Polymicrogyria Bilateral frontoparietal polymicrogyria

Neural tube defect	Spina bifida Rachischisis
Other	Currarino syndrome Diastomatomyelia Syringomyelia

This category reflects the organization of International Statistical Classification of Diseases and Related Health Problems, 10th Revision.
Generally, diseases outlined within the ICD-10 codes Q00-Q07 within Chapter XVII: Congenital malformations, deformations and chromosomal abnormalities should be included in this category.