Q28.1
Other malformations of precerebral vessels
- Release
- FY 2027
- Effective
Hierarchy
Where Q28.1 sits in the official hierarchy. Each level is the code it is classified under.
- Q28 Parent Other congenital malformations of circulatory system
- Q28.1 This code Other malformations of precerebral vessels
Official Coding Notes
Reproduced verbatim from the FY 2027 ICD-10-CM files. Notes labelled as inherited are declared on a parent code and apply here too.
Inclusion Terms
Congenital malformation of precerebral vessels NOS
Inclusion Terms
Congenital precerebral aneurysm (nonruptured)
Excludes1
congenital aneurysm NOS ( Q27.8 )
Inherited from Q28 — Other congenital malformations of circulatory system
Excludes1
congenital coronary aneurysm ( Q24.5 )
Inherited from Q28 — Other congenital malformations of circulatory system
Version History
How Q28.1 appears in each release imported from the official files, newest first.
-
FY 2027 Effective
CurrentOther malformations of precerebral vessels
-
FY 2026 Effective
UnchangedOther malformations of precerebral vessels
Related Codes
Other codes under Q28
- Q28.0 Arteriovenous malformation 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
Codes whose official notes reference Q28.1
Data Source
Code information on this page is derived from the FY 2027 ICD-10-CM files published by CDC NCHS and CMS.
- Release
- FY 2027
- Effective
- Source file
- icd10cm-code-descriptions-2027.zip
Official ICD-10-CM source files (opens in a new tab)
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