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N13 ICD-10-CA category: Obstructive and reflux uropathy

N13 isn’t a code on its own. Choose one of the 10 codes beneath it, the one the documentation supports.

Official description

N13

Obstructive and reflux uropathy

ICD-10-CA · Canada

Codes in N13

N13 isn’t a code on its own. Open the code that matches what the note documents.

N13.0Hydronephrosis with ureteropelvic junction obstructionN13.1Hydronephrosis 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

Notes for N13

As CIHI prints them, with any note N13 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.

  • Calculus of kidney and ureter without hydronephrosis (N20.-)congenital obstructive defects of renal pelvis and ureter (Q62.0 - Q62.3)obstructive pyelonephritis (N11.1)
  • 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 sits

  1. 1ChapterChapter 14: Diseases of the genitourinary system (N00-N99)
  2. 2Block N10-N16Renal tubulo-interstitial diseases
  3. 3Category N13Obstructive and reflux uropathy

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 in the CIHI source

Frequently asked questions

Is N13 a valid ICD-10-CA code?

No. N13 (Obstructive and reflux uropathy) is a category heading in CIHI’s ICD-10-CA FY 2026–2027 release. It holds 10 codes; record the one the documentation supports.

Where is N13 in ICD-10-CA?

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

What coding notes apply to N13?

ICD-10-CA lists Excludes, Includes, Use additional code notes for N13, 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

N10Acute tubulo-interstitial nephritisN11Chronic tubulo-interstitial nephritisN12Tubulo-interstitial nephritis, not specified as acute or chronicN14Drug- and heavy-metal-induced tubulo-interstitial and tubular conditionsN15Other renal tubulo-interstitial diseasesN16Renal tubulo-interstitial disorders in diseases classified elsewhere