Q00-Q07: Congenital malformations of the nervous system
Q04: Other congenital malformations of brain
The group of conditions classified as Other Congenital Malformations of Brain refers to a variety of disorders that are present at birth and involve structural abnormalities of the brain. These malformations occur during fetal development, typically during the first trimester of pregnancy, and may result from genetic factors, infections, or exposure to certain medications or substances. Common symptoms can vary widely depending on the specific malformation and its severity, but may include developmental delays, intellectual disability, seizures, or physical abnormalities. The progression of these conditions also varies; some may remain relatively stable while others lead to progressive neurological decline. These conditions affect the central nervous system, which is comprised of the brain and spinal cord. These disorders are not communicable as they are inherent at or before birth.
Subcodes of Q04:
- Q04.0: Congenital malformations of corpus callosum
- Q04.1: Arhinencephaly
- Q04.2: Holoprosencephaly
- Q04.3: Other reduction deformities of brain
- Q04.4: Septo-optic dysplasia
- Q04.5: Megalencephaly
- Q04.6: Congenital cerebral cysts
- Q04.8: Other specified congenital malformations of brain
- Q04.9: Congenital malformation of brain, unspecified
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