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📋Overview
Lissencephaly is a rare brain malformation characterized by a smooth cerebral surface due to defective neuronal migration during fetal development. It is a legacy term meaning 'smooth brain' and is classified under cortical malformations. Modern terminology refers to it as a type of neuronal migration disorder causing agyria (absence of normal brain folds) or pachygyria (broad, few gyri).
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Medical codes (for reference)
UMLS CUI: C0266463ICD-10-CM
Q04.3
MeSH
D054082
SNOMED CT (US)
204036008
Codes are provided for reference and interoperability. They are not a diagnosis.
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