A39Meningococcal infection
Code usage status
Primary diagnosis
Select a more specific code
Apply only when it matches the confirmed diagnosis and the documented clinical record.
Specificity
Do not use A39 directly
Use the most specific code supported by the record.
- Group A30-A49
- Other bacterial diseases
- Official Vietnamese name
- Nhiễm trùng do não mô cầu
Related A39 codes
A39.0
Primary diagnosis candidate
Meningococcal meningitis (G01*)
A39.1
Primary diagnosis candidate
Waterhouse- Friderichsen syndrome (E35.1*)
A39.2
Primary diagnosis candidate
Acute meningococcaemia
A39.3
Primary diagnosis candidate
Chronic meningococcaemia
A39.4
Primary diagnosis candidate
Meningococcaemia, unspecified
A39.5
Primary diagnosis candidate
Meningococcal heart disease
A39.8
Primary diagnosis candidate
Other meningococcal infections
A39.9
Primary diagnosis candidate
Meningococcal infection, 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.
