Is Q04 a billable code?
No. Q04 is a header code that groups 9 more specific codes. Use one of the billable codes listed on this page instead.
ICD-10-CM FY2027 diagnosis code
Q04: Other congenital malformations of brain
Header code: not billableValid for dates of service October 1, 2026 to September 30, 2027
Q04 groups related diagnoses under other congenital malformations of brain. It cannot be used on a claim by itself. Choose the billable code below that matches the patient's record.
Billable codes under Q04
- Q04.0Congenital malformations of corpus callosum
- Q04.1Arhinencephaly
- Q04.2Holoprosencephaly
- Q04.3Other reduction deformities of brain
- Q04.4Septo-optic dysplasia of brain
- Q04.5Megalencephaly
- Q04.6Congenital cerebral cysts
- Q04.8Other specified congenital malformations of brain
- Q04.9Congenital malformation of brain, unspecified
Q04 questions
What does Q04 mean?
Q04 is the ICD-10-CM code for Other congenital malformations of brain. It is in chapter 17, Congenital malformations, deformations and chromosomal abnormalities (Q00-Q99).
Code titles come from the official ICD-10-CM files published by the CDC National Center for Health Statistics. Always check payer rules and the clinical record before billing.