ICD-10-CM · Chapter 17 · Q00-QA1
Q28 Other congenital malformations of circulatory system
Excludes 1 (cannot be coded together)
- congenital aneurysm NOS (Q27.8)
- congenital coronary aneurysm (Q24.5)
- ruptured cerebral arteriovenous malformation (I60.8)
- ruptured malformation of precerebral vessels (I72.0)
Excludes 2 (not included here)
- congenital peripheral aneurysm (Q27.8)
- congenital pulmonary aneurysm (Q25.79)
- congenital retinal aneurysm (Q14.1)
Subcodes
Subcodes are listed below for reference. Detail pages are not available for chapters 11–22.
| Code | Description | Billable |
|---|---|---|
| Q28..0 | Arteriovenous malformation of precerebral vessels | Yes |
| Q28..1 | Other malformations of precerebral vessels | Yes |
| Q28..2 | Arteriovenous malformation of cerebral vessels | Yes |
| Q28..3 | Other malformations of cerebral vessels | Yes |
| Q28..8 | Other specified congenital malformations of circulatory system | Yes |
| Q28..9 | Congenital malformation of circulatory system, unspecified | Yes |
Last reviewed: September 2026