Q28.3 — Other malformations of cerebral vessels
Q28.3 is a billable, specific ICD-10-CM code for other malformations of cerebral vessels. It is valid for submission on a claim.
Inclusion terms
Alternative wordings a physician may use in the chart for this same code.
- Congenital cerebral aneurysm (nonruptured)
- Congenital malformation of cerebral vessels NOS
- Developmental venous anomaly
Risk adjustment
Q28.3 does not map to an HCC and does not risk-adjust under CMS-HCC V28. That is normal — most ICD-10 codes do not. It still needs to be coded correctly; it just will not move a RAF score.
Medicare coverage
Q28.3 is named in 25 Medicare coverage policies — 25 listing it as supporting medical necessity. Which of them applies to you depends on your Medicare contractor, and coverage genuinely differs by state.
- A52992Billing and Coding: Non-Invasive Cerebrovascular Arterial Studies
- A54111Billing and Coding: Speech Language Pathology (SLP) Services: Communication Disorders
- A55315Billing and Coding: Proton Beam Therapy
- A56612Billing and Coding: CT of the Head
How Q28.3 is indexed
Coders do not find codes by browsing the tabular list — they look them up in the alphabetic index, under the word the physician wrote. These are the index entries that lead here, so you can see which chart wordings map to Q28.3.
- Angioma›venous
- Aberrant›artery›cerebral
- Aberrant›vein NEC›cerebral
- Absence›artery›brain
- Absence›vein congenital NEC›cerebral
- Agenesis›artery›brain
- Agenesis›vein›brain
- Aneurysm›brain›congenital
- Aneurysm›cavernous sinus›arteriovenous(congenital) (nonruptured)
- Aneurysm›circle of Willis›congenital
- Aneurysm›congenital›brain
- Anomaly, anomalous›artery›cerebral
Related codes at this level
Codes that share Q28. If Q28.3 is not quite right, the correct code is usually one of these.
Questions about Q28.3
- Is Q28.3 a billable ICD-10-CM code?
- Yes. Q28.3 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
- Where does Q28.3 sit in the tabular list?
- Congenital malformations, deformations and chromosomal abnormalities (Q00-QA0), in the block Congenital malformations of the circulatory system (Q20-Q28).