N13.8
Other obstructive and reflux uropathy
Billable FY2026 2025-10-01 → 2026-09-30
Exclusions 13 never code together
N13code
Excludes2
- calculus of kidney and ureter without hydronephrosis (N20.-)N20.-
- congenital obstructive defects of renal pelvis and ureter (Q62.0-Q62.3)Q62.0-Q62.3
- hydronephrosis with ureteropelvic junction obstruction (Q62.11)Q62.11
- obstructive pyelonephritis (N11.1)N11.1
N00-N99chapter
Excludes2
- certain conditions originating in the perinatal period (P04-P96)P04-P96
- certain infectious and parasitic diseases (A00-B99)A00-B99
- complications of pregnancy, childbirth and the puerperium (O00-O9A)O00-O9A
- congenital malformations, deformations and chromosomal abnormalities (Q00-Q99)Q00-Q99
- endocrine, nutritional and metabolic diseases (E00-E88)E00-E88
- injury, poisoning and certain other consequences of external causes (S00-T88)S00-T88
- neoplasms (C00-D49)C00-D49
- symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)R00-R94
Excludes1 — never code together. The excluded condition and this one are mutually exclusive.
Excludes2 — not included here, but the patient may have both. Code both when documented.
Instructional notes 4
Index entries leading here 9
Alongside this code 9 same parent — N13
N13.0 Hydronephrosis with ureteropelvic junction obstruction N13.1 Hydronephrosis w ureteral stricture, NEC N13.2 Hydronephrosis with renal and ureteral calculous obstruction N13.3 Other and unspecified hydronephrosis category N13.4 Hydroureter N13.5 Crossing vessel and stricture of ureter w/o hydronephrosis N13.6 Pyonephrosis N13.7 Vesicoureteral-reflux category N13.9 Obstructive and reflux uropathy, unspecified
Additional references
AHA Coding Clinic® Licence required
Official coding advice for this code. Published by the American Hospital Association. Not included in this installation.