Q28 — Other congenital malformations of circulatory system

Not billable

Is Q28 billable?

No — Q28 is a non-billable header code. Q28 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 6 billable codes beneath Q28.

Billable codes under this header

Q28 at a glance

Code	Q28
Description	Other congenital malformations of circulatory system
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 Q28 on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.

congenital aneurysm NOS (Q27.8)
congenital coronary aneurysm (Q24.5)
ruptured cerebral arteriovenous malformation (I60.8)
ruptured malformation of precerebral vessels (I72.0)

Excludes2 — not included here

The conditions below are not part of Q28, but a patient may have both at the same time. When documentation supports it, Q28 and the excluded code may both be reported.

congenital peripheral aneurysm (Q27.8)
congenital pulmonary aneurysm (Q25.79)
congenital retinal aneurysm (Q14.1)

Excludes2 — not included here — inherited from Chapter 17

The conditions below are not part of Q28, but a patient may have both at the same time. When documentation supports it, Q28 and the excluded code may both be reported.

inborn errors of metabolism (E70-E88)

What codes fall under Q28? (6)

How long has Q28 existed?

Q28 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 Q28?

ICD-10-CM declares these codes mutually exclusive with Q28 — exactly one of each pair can be correct for a given encounter.