Q04 — Other congenital malformations of brain

Not billable

Is Q04 billable?

No — Q04 is a non-billable header code. Q04 groups more specific codes and cannot be submitted on a claim. A valid ICD-10-CM code must be reported at the highest level of specificity available in its branch. Select one of the 9 billable codes beneath Q04.

Billable codes under this header

Q04 at a glance

Code	Q04
Description	Other congenital malformations of brain
Billable	No — header code
Code set	ICD-10-CM FY2027
Valid for encounters	October 1, 2026 – September 30, 2027

Excludes1 — never code together

The conditions below can never be reported together with Q04 on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.

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

Excludes2 — not included here — inherited from Chapter 17

The conditions below are not part of Q04, but a patient may have both at the same time. When documentation supports it, Q04 and the excluded code may both be reported.

inborn errors of metabolism (E70-E88)

What codes fall under Q04? (9)

How long has Q04 existed?

Q04 has been in ICD-10-CM since at least FY2016, the earliest fiscal year on record here.

Derived from the official order files for FY2016–FY2026. FY2017 and FY2020 publish no order file, so those years are not covered.

Which codes are confused with Q04?

ICD-10-CM declares these codes mutually exclusive with Q04 — exactly one of each pair can be correct for a given encounter.