J18Pneumonia, organism unspecified
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 J18 directly
Use the most specific code supported by the record.
- Chapter X
- Diseases of the respiratory system
- Group J09-J18
- Influenza and pneumonia
- Official Vietnamese name
- Viêm phổi, không xác định vi sinh vật
- Additional WHO coding guidance
- Excl.: abscess of lung with pneumonia (J85.1) drug-induced interstitial lung disorders (J70.2-J70.4) pneumonia: aspiration (due to): NOS (J69.0) anaesthesia during: labour and delivery (O74.0) pregnancy (O29.0) puerperium (O89.0) neonatal (P24.9) solids and liquids (J69.-) congenital (P23.9) interstitial NOS (J84.9) lipid (J69.1) usual interstitial (J84.1)
Related J18 codes
J18.0
Primary diagnosis candidate
Bronchopneumonia, unspecified
J18.1
Primary diagnosis candidate
Lobar pneumonia, unspecified
J18.2
Primary diagnosis candidate
Hypostatic pneumonia, unspecified
J18.8
Primary diagnosis candidate
Other pneumonia, organism unspecified
J18.9
Popular lookup
Primary diagnosis candidate
Pneumonia, 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.
