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hydrocephalus in newborn
- Excludes1: Arnold-Chiari syndrome, type II (Q07.0-)
- acquired hydrocephalus (G91.-)
- hydrocephalus due to congenital toxoplasmosis (P37.1)
- hydrocephalus with spina bifida (Q05.0-Q05.4)
- Q03.0 Malformations of aqueduct of Sylvius
- Anomaly of aqueduct of Sylvius
- Obstruction of aqueduct of Sylvius, congenital
- Stenosis of aqueduct of Sylvius
- Q03.1 Atresia of foramina of Magendie and Luschka
- Dandy-Walker syndrome
- Q03.8 Other congenital hydrocephalus
- Q03.9 Congenital hydrocephalus, unspecified
Q04 Other congenital malformations of brain
- Excludes1: cyclopia (Q87.0)
- macrocephaly (Q75.3)
- Q04.0 Congenital malformations of corpus callosum
- Agenesis of corpus callosum
- Q04.1 Arhinencephaly
- Q04.2 Holoprosencephaly
- Q04.3 Other reduction deformities of brain
- Absence of part of brain
- Agenesis of part of brain
- Agyria
- Aplasia of part of brain
- Hydranencephaly
- Hypoplasia of part of brain
- Lissencephaly
- Microgyria
- Pachygyria
- Excludes1: congenital malformations of corpus callosum (Q04.0)
- Q04.4 Septo-optic dysplasia of brain
- Q04.5 Megalencephaly
- Q04.6 Congenital cerebral cysts
- Porencephaly
- Schizencephaly
- Excludes1: acquired porencephalic cyst (G93.0)
- Q04.8 Other specified congenital malformations of brain
- Arnold-Chiari syndrome, type IV
- Macrogyria
- Q04.9 Congenital malformation of brain, unspecified
- Congenital anomaly NOS of brain
- Congenital deformity NOS of brain
- Congenital disease or lesion NOS of brain
- Multiple anomalies NOS of brain, congenital
==Q05
