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Q04

Other congenital malformations of brain

• 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

• congenital malformations of corpus callosum (Q04.0)

• 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

Q04.4

Septo-optic dysplasia of brain

Q04.5

Megalencephaly

Q04.6

Congenital cerebral cysts

• acquired porencephalic cyst (G93.0)

• Porencephaly
• Schizencephaly

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