Q27.9 — Congenital malformation of peripheral vascular system, unspecified
Q27.9 is a billable, specific ICD-10-CM code for congenital malformation of peripheral vascular system, unspecified. It is valid for submission on a claim.
Inclusion terms
Alternative wordings a physician may use in the chart for this same code.
- Anomaly of artery or vein NOS
Risk adjustment
Q27.9 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
Q27.9 is named in 11 Medicare coverage policies — 11 listing it as supporting medical necessity. Which of them applies to you depends on your Medicare contractor, and coverage genuinely differs by state.
- A54111Billing and Coding: Speech Language Pathology (SLP) Services: Communication Disorders
- A56697Billing and Coding: Non-Invasive Vascular Studies
- A56722Billing and Coding: Intraoperative Neurophysiological Testing
- A56775Billing and Coding: Magnetic Resonance Angiography
How Q27.9 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 Q27.9.
- Distribution vessel, atypical
- Accessory›blood vessels NEC
- Agenesis›artery(peripheral)
- Agenesis›vein(s) (peripheral)
- Anomaly, anomalous›artery(peripheral)
- Anomaly, anomalous›capillary
- Anomaly, anomalous›peripheral vascular system
- Anomaly, anomalous›vascular
- Anomaly, anomalous›vein(s) (peripheral)
- Anomaly, anomalous›vessel(s)
- Deformity›artery NOS(congenital) (peripheral)
- Deformity›vein(congenital)
Related codes at this level
Codes that share Q27. If Q27.9 is not quite right, the correct code is usually one of these.
Questions about Q27.9
- Is Q27.9 a billable ICD-10-CM code?
- Yes. Q27.9 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
- Where does Q27.9 sit in the tabular list?
- Congenital malformations, deformations and chromosomal abnormalities (Q00-QA0), in the block Congenital malformations of the circulatory system (Q20-Q28).