Other congenital malformations of circulatory system (Q28) ICD-10-CM
The Q28 code range covers other congenital malformations of circulatory system with 7 ICD-10-CM diagnosis codes. 6 of them are billable and valid for claim submission in fiscal year 2027, and the category headers group them but cannot themselves be billed.
Type 1 Excludes
A type 1 excludes note is a pure excludes note. It means "NOT CODED HERE!" An Excludes1 note indicates that the code excluded should never be used at the same time as the code above the Excludes1 note. An Excludes1 is used when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
- congenital aneurysm NOS Q27.8
- congenital coronary aneurysm Q24.5
- ruptured cerebral arteriovenous malformation I60.8
- ruptured malformation of precerebral vessels I72.0
Type 2 Excludes
A type 2 excludes note represents "Not included here". An excludes2 note indicates that the condition excluded is not part of the condition represented by the code, but a patient may have both conditions at the same time. When an Excludes2 note appears under a code, it is acceptable to use both the code and the excluded code together, when appropriate.
Codes in the Q28 Range 7 codes · 6 billable
- Q28 Other congenital malformations of circulatory systemNon-billable
- Q28.0 Arteriovenous malformation of precerebral vessels
- Q28.1 Other malformations of precerebral vessels
- Q28.2 Arteriovenous malformation of cerebral vessels
- Q28.3 Other malformations of cerebral vessels
- Q28.8 Other specified congenital malformations of circulatory system
- Q28.9 Congenital malformation of circulatory system, unspecified
About the Q28 Code Range
These conditions are malformations of the circulatory system present at birth, including those affecting vessels leading to or within the brain.
Q28.0 identifies artery-and-vein malformations of vessels leading to the brain; Q28.1 identifies other malformations of those vessels. Q28.2 and Q28.3 make the same distinction for vessels within the brain.
Q28.8 covers other specified congenital circulatory malformations; Q28.9 covers unspecified ones.
Questions About This Page
How many billable codes are in the Q28 range?
Of the 7 codes in this range, 6 are billable and valid for claim submission from October 1, 2026 through September 30, 2027. Category header codes group them but cannot be reported on claims.
What does the Q28 range classify?
The range classifies other congenital malformations of circulatory system. Each code links to its own reference page with billing status, MS-DRG grouping, coding notes, and clinical information.
Related References
Source: CMS FY 2027 ICD-10-CM Tabular List and order file, effective October 1, 2026 through September 30, 2027.
