N13.0
ICD-10BillableHydronephrosis with ureteropelvic junction obstruction
Official ICD-10-CM descriptor (FY2026)
Hydronephrosis with ureteropelvic junction obstruction
N13.0 is valid for submission on a claim — CMS flags it as a billable, specific code.
Inclusion terms
- Hydronephrosis due to acquired occlusion of ureteropelvic junction
Excludes2
Not included here. The condition is not part of this code, but a patient may have both, and both codes may be reported together.
- Hydronephrosis with ureteropelvic junction obstruction due to calculus (N13.2)
Related codes in N13
- N13.1Hydronephrosis w ureteral stricture, NEC
- N13.2Hydronephrosis with renal and ureteral calculous obstruction
- N13.3Other and unspecified hydronephrosiscategory
- N13.4Hydroureter
- N13.5Crossing vessel and stricture of ureter w/o hydronephrosis
- N13.6Pyonephrosis
- N13.7Vesicoureteral-refluxcategory
- N13.8Other obstructive and reflux uropathy
- N13.9Obstructive and reflux uropathy, unspecified
Where this code sits
- Parent code
- N13
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ICD-10-CM FY2026. Centers for Medicare & Medicaid Services (CMS) / National Center for Health Statistics (NCHS), “2026 ICD-10-CM Code Descriptions in Tabular Order” (icd10cm_order_2026.txt). Download the original file from cms.gov. Public domain (US Government work). Descriptors, billable flags and instructional notes on this page are reproduced from that file without modification. Krasyn adds no clinical guidance.