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N13.0 ICD-10-CA code: Hydronephrosis with ureteropelvic junction obstruction

N13.0 is the ICD-10-CA code for “Hydronephrosis with ureteropelvic junction obstruction” in CIHI’s FY 2026–2027 release, in effect from Apr 1, 2026.

Official description

N13.0

Hydronephrosis with ureteropelvic junction obstruction

Short description: Hydronephrosis w ureteropelvic jnct obs

ICD-10-CA · Canada · Also written N130

Index terms

Entries in CIHI’s alphabetical index that lead to N13.0. Searching the index by the condition the note names is how coders reach this code.

  • Stricture, pelviureteric junction, with, hydronephrosis
  • Stricture, ureteropelvic junction, with, hydronephrosis
  • Obstruction, obstructed, obstructive, ureter (functional) NEC, pelvic junction (with), hydronephrosis
  • Hydronephrosis (atrophic) (early) (functionless) (intermittent) (primary) (secondary) NEC, with, obstruction (by) (of), ureteropelvic junction

Notes for N13.0

As CIHI prints them, with any note N13.0 takes from the headings above it.

Includes

Use additional code

Add a code for this detail when the note documents it.

Excludes

Conditions classified elsewhere.

  • With infection (N13.6)
  • Calculus of kidney and ureter without hydronephrosis (N20.-)congenital obstructive defects of renal pelvis and ureter (Q62.0 - Q62.3)obstructive pyelonephritis (N11.1)From N13 Obstructive and reflux uropathy
  • Pyeloureteritis cystica (N28.84)From N10-N16 Renal tubulo-interstitial diseases
  • Certain conditions originating in the perinatal period (P00-P96)certain infectious and parasitic diseases (A00-B99)complications of pregnancy, childbirth and the puerperium (O00-O99)congenital malformations, deformations and chromosomal abnormalities (Q00-Q99)endocrine, nutritional and metabolic diseases (E00-E90)injury, poisoning and certain other consequences of external causes (S00-T98)neoplasms (C00-D48)symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R99)From Chapter 14: Diseases of the genitourinary system (N00-N99)

Where N13.0 sits

  1. 1ChapterChapter 14: Diseases of the genitourinary system (N00-N99)
  2. 2Block N10-N16Renal tubulo-interstitial diseases
  3. 3Category N13Obstructive and reflux uropathy
  4. 4Valid code N13.0Hydronephrosis with ureteropelvic junction obstruction

Source and release

Data release
ICD-10-CA · FY 2026–2027
Effective date
Apr 1, 2026
Publisher
CIHI

This page is built from the ICD-10-CA catalog that Vero Codes reads when it suggests codes: Canadian Institute for Health Information’s FY 2026–2027 release, imported from the publisher’s file and checked against it. The description, notes and structured data come from the same record.

See N13.0 in the CIHI source

Frequently asked questions

What does ICD-10-CA code N13.0 mean?

N13.0 is the ICD-10-CA code for “Hydronephrosis with ureteropelvic junction obstruction” in CIHI’s ICD-10-CA FY 2026–2027 release.

Where is N13.0 in ICD-10-CA?

N13.0 sits under N13 Obstructive and reflux uropathy, within N10-N16 Renal tubulo-interstitial diseases, within Chapter 14: Diseases of the genitourinary system (N00-N99).

What coding notes apply to N13.0?

ICD-10-CA lists Excludes, Includes, Use additional code notes for N13.0, including those from the headings it sits under. They are listed on this page with where each one comes from.

Which ICD-10-CA release does this page use?

It uses CIHI’s FY 2026–2027 release, in effect from Apr 1, 2026 to Mar 31, 2027. It is a reference: confirm the code against the current list and the payer’s rules before you submit it.

Codes beside N13.0

N13.1Hydronephrosis with ureteral stricture, not elsewhere classifiedN13.2Hydronephrosis with renal and ureteral calculous obstructionN13.3Other and unspecified hydronephrosisN13.4HydroureterN13.5Kinking and stricture of ureter without hydronephrosisN13.6PyonephrosisN13.7Vesicoureteral-reflux-associated uropathyN13.8Other obstructive and reflux uropathyN13.9Obstructive and reflux uropathy, unspecified