Q30.1Agenesis and underdevelopment of nose
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 Q30-Q34
- Congenital malformations of the respiratory system
- Official Vietnamese name
- Dị tật bất sản và/hoặc khuyết thiếu trong sự phát triển của mũi
- Additional WHO coding guidance
- Congenital absence of nose
Related Q30 codes
Q30
Congenital malformations of nose
Q30.0
Primary diagnosis candidate
Choanal atresia
Q30.2
Primary diagnosis candidate
Fissured, notched and cleft nose
Q30.3
Primary diagnosis candidate
Congenital perforated nasal septum
Q30.8
Primary diagnosis candidate
Other congenital malformations of nose
Q30.9
Primary diagnosis candidate
Congenital malformation of nose, unspecified
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.