Q28
Header — not billableOther congenital malformations of circulatory system
The ICD-10 code for other congenital malformations of circulatory system is Q28.
Q28 is a non-billable header code. It groups related conditions but cannot be used on its own for reimbursement — select one of the 6 more specific codes below.
Clinical notes
Excludes1 (not coded here)
An Excludes1 note is a pure exclusion: the excluded condition and this code should never be reported together, because the two conditions cannot occur at the same time (e.g. a congenital form vs. an acquired form of the same disease).
Excludes2 (not included here)
An Excludes2 note means the excluded condition is not part of this one, but a patient can have both at the same time — in that case both codes may be reported together.
Documentation support
General coding-documentation guidance — not a substitute for payer-specific requirements or professional coding judgment.
- •This is a non-billable header code. Documentation must support a more specific child code before this diagnosis can be reported on a claim.
- •Confirm the excluded condition(s) listed above are not also present — Excludes1 conditions cannot be coded together with this one.
- •As a general rule, code to the highest level of specificity supported by the documentation in the medical record.
Child codes under Q28
- Q28.0Arteriovenous malformation of precerebral vessels
- Q28.1Other malformations of precerebral vessels
- Q28.2Arteriovenous malformation of cerebral vessels
- Q28.3Other malformations of cerebral vessels
- Q28.8Other specified congenital malformations of circulatory system
- Q28.9Congenital malformation of circulatory system, unspecified
Related codes in this category
- Q20Congenital malformations of cardiac chambers and connectionsnon-billable header
- Q21Congenital malformations of cardiac septanon-billable header
- Q22Congenital malformations of pulmonary and tricuspid valvesnon-billable header
- Q23Congenital malformations of aortic and mitral valvesnon-billable header
- Q24Other congenital malformations of heartnon-billable header
- Q25Congenital malformations of great arteriesnon-billable header
- Q26Congenital malformations of great veinsnon-billable header
- Q27Other congenital malformations of peripheral vascular systemnon-billable header
- Q28Other congenital malformations of circulatory systemnon-billable header