A49Bacterial infection of unspecified site
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 A49 directly
Use the most specific code supported by the record.
- Group A30-A49
- Other bacterial diseases
- Official Vietnamese name
- Nhiễm khuẩn ở vị trí không xác định
- Additional WHO coding guidance
- Excl.: bacterial agents as the cause of diseases classified to other chapters (B95- B96) chlamydial infection NOS (A74.9) meningococcal infection NOS (A39.9) rickettsial infection NOS (A79.9) spirochaetal infection NOS (A69.9)
Related A49 codes
A49.0
Primary diagnosis candidate
Staphylococcal infection, unspecified site
A49.1
Primary diagnosis candidate
Streptococcal and enterococcal infection, unspecified site
A49.2
Primary diagnosis candidate
Haemophilus influenzae infection, unspecified site
A49.3
Primary diagnosis candidate
Mycoplasma infection, unspecified site
A49.8
Primary diagnosis candidate
Other bacterial infections of unspecified site
A49.9
Primary diagnosis candidate
Bacterial 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.
