Q28.1
Q28.1: Other malformations of precerebral vessels
Billable / specific codeICD-10-CMPOA exempt
Q28.1 is a billable, specific ICD-10-CM code for other malformations of precerebral vessels. It is valid for submission on a claim.
Check Q28.1 with the rest of the claim: free scrubberInclusion terms
Alternative wordings a physician may use in the chart for this same code.
- Congenital malformation of precerebral vessels NOS
- Congenital precerebral aneurysm (nonruptured)
Excludes1 inherited from the categories above Q28.1
A category’s note binds every code beneath it.
Excludes2 inherited from the categories above Q28.1
Not part of this code, but both may be coded when both are present.
Other codes that can never be billed with Q28.1
Their own Excludes1 notes name this code, so the conflict is not listed above.
- I67.1Cerebral aneurysm, nonruptured
Risk adjustment
No CMS-HCC V28 category: this code does not change a RAF score.
Medicare coverage
Q28.1 is named in 3 Medicare coverage policies: 3 listing it as supporting medical necessity. Which one applies depends on your Medicare contractor.
- A54111Billing and Coding: Speech Language Pathology (SLP) Services: Communication Disorders
- A56691Billing and Coding: Cardiac Computed Tomography & Angiography (CCTA)
- A57592Billing and Coding: Non-Invasive Cerebrovascular Studies
Alphabetic index entries that lead here
- Anomaly, anomalous›precerebral vessel
- Dissection›precerebral artery, congenital(nonruptured)
- Distribution vessel, atypical›precerebral
- Malformation›precerebral vessels
- Aberrant›artery›basilar NEC
- Aberrant›artery›precerebral
- Aberrant›artery›vertebral
- Aberrant›vein NEC›precerebral
- Absence›vein congenital NEC›precerebral
- Aneurysm›precerebral›congenital(nonruptured)
- Anomaly, anomalous›artery›basilar NEC
- Anomaly, anomalous›artery›vertebral NEC
Code history
Unchanged in every release from FY2024 to FY2027.