ICD-10-CM · Category
Q04 — Other congenital malformations of brain
Chapter Q00-Q99: Congenital malformations, deformations and chromosomal abnormalities
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Q04.0Congenital malformations of corpus callosumQ04.1ArhinencephalyQ04.2HoloprosencephalyQ04.3Other reduction deformities of brainQ04.4Septo-optic dysplasia of brainQ04.5MegalencephalyQ04.6Congenital cerebral cystsQ04.8Other specified congenital malformations of brainQ04.9Congenital malformation of brain, unspecified
Common questions about Q04 (Other congenital malformations of brain)
What does ICD-10 code Q04 mean?
Q04 is the ICD-10-CM 2025 code for Other congenital malformations of brain. ICD-10-CM is the medical coding system used by clinicians, hospitals and insurers worldwide to classify diseases and conditions in a standard way.
Is Q04 a billable diagnosis code?
Q04 is a category-level (umbrella) code rather than a billable specific code. For billing purposes, clinicians typically use a more specific sub-code under Q04. Browse the sub-codes listed on this page.
Which ICD-10 chapter does Q04 belong to?
Q04 belongs to the chapter "Congenital malformations, deformations and chromosomal abnormalities" (codes Q00-Q99). ICD-10-CM organises codes into 22 chapters by body system or condition type, which helps clinicians navigate related diagnoses.
Where can I get plain-language information about Other congenital malformations of brain?
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Source: ICD-10-CM 2025 (Centers for Medicare & Medicaid Services, public domain). Codes valid from October 1, 2024. CMS source ↗