Q28.3 Other malformations of cerebral vessels
The ICD-10-CM code for Other malformations of cerebral vessels is Q28.3 (FY2026). It is a billable, claim-ready diagnosis code.
Classification
- 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 Q28.3:
- Angioma › venous
- Agenesis › artery (peripheral) › brain
- Aberrant (congenital) › artery (peripheral) › cerebral
- Absence (of) (organ or part) (complete or partial) › vein (peripheral) congenital NEC › cerebral
- Aberrant (congenital) › vein (peripheral) NEC › cerebral
- Absence (of) (organ or part) (complete or partial) › artery (congenital) (peripheral) › brain
- Agenesis › vein (s) (peripheral) › brain
- Aneurysm (anastomotic) (artery) (cirsoid) (diffuse) (false) (fusiform) (multiple) (saccular) › brain › congenital
Inclusion Terms
- Congenital cerebral aneurysm (nonruptured)
- Congenital malformation of cerebral vessels NOS
- Developmental venous anomaly
U.S. Hospital Utilization
- An estimated 6,940 U.S. inpatient stays in 2023 included Q28.3 among the documented diagnoses.
- 1,290 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 exceptionCongenital 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