Q27.8 — Other specified congenital malformations of peripheral vascular system
Q27.8 is a billable, specific ICD-10-CM code for other specified congenital malformations of peripheral vascular system. It is valid for submission on a claim.
Excludes1 — never code together
These conditions cannot occur together. Billing both on the same encounter is a denial.
- arteriovenous malformation (Q27.3-)
Inclusion terms
Alternative wordings a physician may use in the chart for this same code.
- Absence of peripheral vascular system
- Atresia of peripheral vascular system
- Congenital aneurysm (peripheral)
- Congenital stricture, artery
- Congenital varix
Other codes that can never be billed with Q27.8
These codes carry an Excludes1 note pointing at Q27.8. The conflict binds both ways, but ICD-10-CM only writes it down on one side — so you would not find this by reading Q27.8 alone.
- Q28Other congenital malformations of circulatory system
Risk adjustment
Q27.8 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
Q27.8 is named in 8 Medicare coverage policies — 8 listing it as supporting medical necessity. Which of them applies to you depends on your Medicare contractor, and coverage genuinely differs by state.
- A52993Billing and Coding: Peripheral Venous Ultrasound
- A54111Billing and Coding: Speech Language Pathology (SLP) Services: Communication Disorders
- A55229Billing and Coding: Treatment of Chronic Venous Insufficiency of the Lower Extremities
- A56747Billing and Coding: Magnetic Resonance Angiography (MRA)
How Q27.8 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 Q27.8.
- Aberrant›artery(peripheral)
- Aberrant›subclavian artery
- Aberrant›vein NEC(peripheral)
- Absence›artery(congenital) (peripheral)
- Absence›vein congenital NEC(peripheral)
- Aneurysm›congenital(peripheral)
- Atresia, atretic›artery NEC
- Atresia, atretic›vascular NEC
- Atresia, atretic›vein NEC
- Hypoplasia, hypoplastic›artery(peripheral)
- Hypoplasia, hypoplastic›peripheral vascular system
- Hypoplasia, hypoplastic›vascular NEC peripheral
Related codes at this level
Codes that share Q27. If Q27.8 is not quite right, the correct code is usually one of these.
Questions about Q27.8
- Is Q27.8 a billable ICD-10-CM code?
- Yes. Q27.8 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
- Where does Q27.8 sit in the tabular list?
- Congenital malformations, deformations and chromosomal abnormalities (Q00-QA0), in the block Congenital malformations of the circulatory system (Q20-Q28).
- What cannot be coded together with Q27.8?
- Q27.8 carries an Excludes1 note, which means the conditions it lists can never be coded together with it on the same encounter.