Q04
⚠ Non-billable
Other congenital malformations of brain
ICD-10-CM · FY2026 · Congenital Malformations, Deformations and Chromosomal Abnormalities
Code
Q04
System
ICD-10-CM
Billable
No — use specific code
Effective
FY2026
Chapter
Congenital Malformations, Deformations and Chromosomal Abnormalities
Source
CMS / CDC NCHS
⚠ Verify before billing. Confirm against the current CMS/NCHS ICD-10-CM files and your payer's rules before claims submission.
Frequently asked questions
What is ICD-10 code Q04?
ICD-10-CM code Q04 represents Other congenital malformations of brain. It is a non-billable header code requiring a more specific subcategory in the Congenital Malformations, Deformations and Chromosomal Abnormalities chapter, effective October 1, 2025 – September 30, 2026.
Is Q04 billable?
No. Q04 is a non-billable header. Select a more specific subcategory for claims submission.
What chapter is Q04 in?
Q04 belongs to the Congenital Malformations, Deformations and Chromosomal Abnormalities chapter (Q00–Q99) of ICD-10-CM.
Related codes in the Q04 category
Q04.0
Congenital malformations of corpus callosum
Billable
Q04.1
Arhinencephaly
Billable
Q04.2
Holoprosencephaly
Billable
Q04.3
Other reduction deformities of brain
Billable
Q04.4
Septo-optic dysplasia of brain
Billable
Q04.5
Megalencephaly
Billable
Q04.6
Congenital cerebral cysts
Billable
Q04.8
Other specified congenital malformations of brain
Billable
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