Q27.9Congenital malformation of peripheral vascular system, unspecified
Code usage status
Primary diagnosis
May be used as the primary diagnosis
Apply only when it matches the confirmed diagnosis and the documented clinical record.
Specificity
Complete code in the classification
Use when the diagnosis matches and no exclusion applies.
- Group Q20-Q28
- Congenital malformations of the circulatory system
- Official Vietnamese name
- Dị tật bẩm sinh của hệ thống mạch ngoại vi, không xác định
- Additional WHO coding guidance
- Anomaly of artery or vein NOS
Related Q27 codes
Q27
Other congenital malformations of peripheral vascular system
Q27.0
Primary diagnosis candidate
Congenital absence and hypoplasia of umbilical artery
Q27.1
Primary diagnosis candidate
Congenital renal artery stenosis
Q27.2
Primary diagnosis candidate
Other congenital malformations of renal artery
Q27.3
Primary diagnosis candidate
Peripheral arteriovenous malformation
Q27.4
Primary diagnosis candidate
Congenital phlebectasia
Q27.8
Primary diagnosis candidate
Other specified congenital malformations of peripheral vascular system
Clinical record checklist
View coding guide →- Confirm that the code matches the final documented diagnosis.
- Use one primary-diagnosis code and record only relevant additional conditions.
- Review Ministry indicators, inclusions, exclusions and notes.
- Do not infer a diagnosis beyond the clinical record.
2026 regulatory basis
Indicators are taken from columns 24–29 of the classification accompanying Circular 06/2026/TT-BYT, cross-referenced with Decision 1849/QĐ-BYT and Official Dispatch 4059/BYT-BH.
