From parent levels

ChapterXVIICongenital malformations, deformations and chromosomal abnormalitiesOpen

Exclusions

inborn errors of metabolism (E70-E90)

BlockQ00-Q07Congenital malformations of the nervous systemOpen

CategoryQ04Other congenital malformations of brainOpen

Exclusions

cyclopia (Q87.0)
macrocephaly (Q75.3)

Q04.3

CategoryBlock Q00-Q07 Chapter XVII

Other reduction deformities of brain

Inclusions

Absence of part of brain
Agenesis of part of brain
Aplasia of part of brain
Hypoplasia of part of brain
Agyria
Hydranencephaly
Lissencephaly
Microgyria
Pachygyria

Exclusions

congenital malformations of corpus callosum (Q04.0)

Parent: Q04 Other congenital malformations of brain