N13.5Kinking and stricture of ureter without hydronephrosis
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.
- Chapter XIV
- Diseases of the genitourinary system
- Group N10-N16
- Renal tubulo- interstitial diseases
- Official Vietnamese name
- Niệu quản gấp khúc và/hoặc co hẹp không gây ứ nước thận
- Additional WHO coding guidance
- Use additional code, if desired, to identify the underlying disease. Excl.: with infection (N13.6)
Related N13 codes
N13
Obstructive and reflux uropathy
N13.0
Primary diagnosis candidate
Hydronephrosis with ureteropelvic junction obstruction
N13.1
Primary diagnosis candidate
Hydronephrosis with ureteral stricture, not elsewhere classified
N13.2
Primary diagnosis candidate
Hydronephrosis with renal and ureteral calculous obstruction
N13.3
Primary diagnosis candidate
Other and unspecified hydronephrosis
N13.4
Primary diagnosis candidate
Hydroureter
N13.6
Primary diagnosis candidate
Pyonephrosis
N13.7
Primary diagnosis candidate
Vesicoureteral- reflux-associated uropathy
N13.8
Primary diagnosis candidate
Other obstructive and reflux uropathy
N13.9
Primary diagnosis candidate
Obstructive and reflux uropathy, 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.
