Q28.2 Arteriovenous malformation of cerebral vessels

The ICD-10-CM code for Arteriovenous malformation of cerebral vessels is Q28.2 (FY2026). It is a billable, claim-ready diagnosis code.

Classification

Chapter

17: Congenital malformations, deformations and chromosomal abnormalities (Q00-QA0)

Section

Q20-Q28: Congenital malformations of the circulatory system (Q20-Q28)

Category Q28

7 codes (6 billable)

FY2026 Status

Stable since FY2024

Also Known As

ICD-10-CM Alphabetic Index entries that lead to Q28.2:

• Aneurysm (anastomotic) (artery) (cirsoid) (diffuse) (false) (fusiform) (multiple) (saccular) › brain › arteriovenous (congenital) (nonruptured)
• Malformation (congenital) › arteriovenous, aneurysmatic (congenital) › cerebral
• Aneurysm (anastomotic) (artery) (cirsoid) (diffuse) (false) (fusiform) (multiple) (saccular) › arteriovenous (congenital) › brain
• Malformation (congenital) › arteriovenous, aneurysmatic (congenital) › brain
• Malformation (congenital) › brain (multiple) › arteriovenous
• Fistula (cutaneous) › arteriovenous (acquired) (nonruptured) › brain › congenital
• Fistula (cutaneous) › arteriovenous (acquired) (nonruptured) › congenital (peripheral) › brain
• Fistula (cutaneous) › brain › arteriovenous (acquired) › congenital

Inclusion Terms

• Arteriovenous malformation of brain NOS
• Congenital arteriovenous cerebral aneurysm (nonruptured)

U.S. Hospital Utilization

• An estimated 9,210 U.S. inpatient stays in 2023 included Q28.2 among the documented diagnoses.
• 2,955 stays listed it as the principal diagnosis.

Source: National Inpatient Sample (NIS), Healthcare Cost and Utilization Project (HCUP), Agency for Healthcare Research and Quality, 2016–2023. National survey-weighted estimates.

Official Coding Guidelines

POA indicator for congenital conditions/anomalies and Q00-Q99 exception

Congenital conditions and anomalies Assign “Y” for congenital conditions and anomalies except for categories Q00- Q99, Congenital anomalies, which are on the exempt list. Congenital conditions are always considered present on admission.

Source: CMS — ICD-10-CM Official Guidelines for Coding and Reporting, FY2026

References

• CMS — ICD-10-CM Official Code Set and Guidelines, FY2026
• CDC/NCHS — ICD-10-CM Files and Browser Tool
• AHRQ — HCUP National Inpatient Sample, Frequencies by Diagnosis Code (2016–2023)