N11Chronic tubulo- interstitial nephritis
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 N11 directly
Use the most specific code supported by the record.
- Chapter XIV
- Diseases of the genitourinary system
- Group N10-N16
- Renal tubulo- interstitial diseases
- Official Vietnamese name
- Viêm ống thận mô kẽ mạn tính
- Additional WHO coding guidance
- Incl.: chronic: infectious interstitial nephritis pyelitis pyelonephritis Use additional code (B95-B98), if desired, to identify infectious
Related N11 codes
N11.0
Primary diagnosis candidate
Nonobstructive reflux-associated chronic pyelonephritis
N11.1
Primary diagnosis candidate
Chronic obstructive pyelonephritis
N11.8
Primary diagnosis candidate
Other chronic tubulo-interstitial nephritis
N11.9
Primary diagnosis candidate
Chronic tubulo- interstitial nephritis, 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.
