Q04
Other congenital malformations of brain
Not billable — category only FY2026 2025-10-01 → 2026-09-30
Exclusions 2 never code together
Instructional notes
No further instructional notes apply.
Index entries leading here filed at null
No alphabetic index entry points at this code.
Subordinate codes 9
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 of brain Q04.5 Megalencephaly Q04.6 Congenital cerebral cysts Q04.8 Other specified congenital malformations of brain Q04.9 Congenital malformation of brain, unspecified
Additional references
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