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2 Minute Medicine ICD-10 Lookup

ICD-10-CM code · FY2027

Q04 Other congenital malformations of brain

Header codeNot billable: use one of the 9 billable codes below

About Q04

Code: Q04
Billable: No, header
Short description: Other congenital malformations of brain
Block: Q00-Q07 Congenital malformations of the nervous system
Chapter: 17 Congenital malformations, deformations, chromosomal abnormalities, and genetic disorders
Code set: FY2027, October 1, 2026 to September 30, 2027

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Coding notes for Q04

Excludes1 Not coded here: never report these together with this code (use the code given instead).

cyclopia (Q87.0)
macrocephaly (Q75.3)

Chapter 17 notes (apply to every code in it)

Note

Codes from this chapter are not for use on maternal records

Excludes2 Not part of this condition, but a patient can have both: report both codes when both apply.

inborn errors of metabolism (E70-E88)

Codes under Q04 9

Q04.0 Congenital malformations of corpus callosumBillable
Q04.1 ArhinencephalyBillable
Q04.2 HoloprosencephalyBillable
Q04.3 Other reduction deformities of brainBillable
Q04.4 Septo-optic dysplasia of brainBillable
Q04.5 MegalencephalyBillable
Q04.6 Congenital cerebral cystsBillable
Q04.8 Other specified congenital malformations of brainBillable
Q04.9 Congenital malformation of brain, unspecifiedBillable

Other categories in Q00-Q07

Q00 Anencephaly and similar malformationsHeader
Q01 EncephaloceleHeader
Q02 MicrocephalyBillable
Q03 Congenital hydrocephalusHeader
Q05 Spina bifidaHeader
Q06 Other congenital malformations of spinal cordHeader
Q07 Other congenital malformations of nervous systemHeader

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