Q28
⚠ Non-billable
Other congenital malformations of circulatory system
ICD-10-CM · FY2026 · Congenital Malformations, Deformations and Chromosomal Abnormalities
Code
Q28
System
ICD-10-CM
Billable
No — use specific code
Effective
FY2026
Chapter
Congenital Malformations, Deformations and Chromosomal Abnormalities
Source
CMS / CDC NCHS
⚠ Verify before billing. Confirm against the current CMS/NCHS ICD-10-CM files and your payer's rules before claims submission.
Official coding notes
From CMS's ICD-10-CM Tabular List.
Excludes1 — never code together
- 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, but may code together
- congenital peripheral aneurysm (Q27.8)
- congenital pulmonary aneurysm (Q25.79)
- congenital retinal aneurysm (Q14.1)
Frequently asked questions
What is ICD-10 code Q28?
ICD-10-CM code Q28 represents Other congenital malformations of circulatory system. It is a non-billable header code requiring a more specific subcategory in the Congenital Malformations, Deformations and Chromosomal Abnormalities chapter, effective October 1, 2025 – September 30, 2026.
Is Q28 billable?
No. Q28 is a non-billable header. Select a more specific subcategory for claims submission.
What chapter is Q28 in?
Q28 belongs to the Congenital Malformations, Deformations and Chromosomal Abnormalities chapter (Q00–Q99) of ICD-10-CM.
Related codes in the Q28 category
Q28.0
Arteriovenous malformation of precerebral vessels
Billable
Q28.1
Other malformations of precerebral vessels
Billable
Q28.2
Arteriovenous malformation of cerebral vessels
Billable
Q28.3
Other malformations of cerebral vessels
Billable
Q28.8
Other specified congenital malformations of circulatory system
Billable
Q28.9
Congenital malformation of circulatory system, unspecified
Billable
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