All ICD10 Codes

N13

Non-Billable
ChapterN00–N99
Rankcategory
Official Description

Obstructive and reflux uropathy

Use a more specific code (8 billable, 2 non-billable)
N13.0Hydronephrosis with ureteropelvic junction obstructionN13.1Hydronephrosis with ureteral stricture, not elsewhere classifiedN13.2Hydronephrosis with renal and ureteral calculous obstructionN13.3Other and unspecified hydronephrosishas subcodesN13.4HydroureterN13.5Crossing vessel and stricture of ureter without hydronephrosisN13.6PyonephrosisN13.7Vesicoureteral-refluxhas subcodesN13.8Other obstructive and reflux uropathyN13.9Obstructive and reflux uropathy, unspecified
Metadata & Insights
  • •Non-billable category (requires more specific sub-code).
  • •Chapter 14: Diseases of the Genitourinary System (N00-N99).

CH14 Parent Instructions

Excludes2(Not included here. Code separately if applicable.)
  • certain conditions originating in the perinatal period (P04-P96)
  • certain infectious and parasitic diseases (A00-B99)
  • complications of pregnancy, childbirth and the puerperium (O00-O9A)
  • congenital malformations, deformations and chromosomal abnormalities (Q00-Q99)
  • endocrine, nutritional and metabolic diseases (E00-E88)
  • injury, poisoning and certain other consequences of external causes (S00-T88)
  • neoplasms (C00-D49)
  • symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)

N10-N16 Parent Instructions

Includes
  • pyelonephritis
Excludes1(Not coded here. Use a different code.)
  • pyeloureteritis cystica (N28.85)

Instructional Notes

Excludes2(Not included here. Code separately if applicable.)
  • calculus of kidney and ureter without hydronephrosis (N20.-)
  • congenital obstructive defects of renal pelvis and ureter (Q62.0-Q62.3)
  • hydronephrosis with ureteropelvic junction obstruction (Q62.11)
  • obstructive pyelonephritis (N11.1)

Clinical Hierarchy

BillableHas subcodes
CH14Diseases of the genitourinary system (N00-N99)
N10-N16Renal tubulo-interstitial diseases (N10-N16)
N13Obstructive and reflux uropathyNot billable
N13.0Hydronephrosis with ureteropelvic junction obstructionBillable
N13.1Hydronephrosis with ureteral stricture, not elsewhere classifiedBillable
N13.2Hydronephrosis with renal and ureteral calculous obstructionBillable
N13.3Other and unspecified hydronephrosisSubcodes
N13.4HydroureterBillable
N13.5Crossing vessel and stricture of ureter without hydronephrosisBillable
N13.6PyonephrosisBillable
N13.7Vesicoureteral-refluxSubcodes
N13.8Other obstructive and reflux uropathyBillable
N13.9Obstructive and reflux uropathy, unspecifiedBillable

Applicable Ancestor Context

The following parent sections contain instructions or notes that apply to N13:

blockN10-N16
Renal tubulo-interstitial diseases (N10-N16)
View context instructions
chapterCH14
Diseases of the genitourinary system (N00-N99)
View context instructions

MS-DRG Classification

2026

No direct MS-DRG triggers identified.

Cross Reference

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