All ICD10 Codes
Chapter 14

N00–N99: Diseases of the Genitourinary System

Diseases of the Genitourinary System diagnostic classification updated for 2026.

Chapter 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)
All CodesBillable Only
Internal Codes
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  • N07.6—

    Hereditary nephropathy, not elsewhere classified with dense deposit disease

  • N07.7—

    Hereditary nephropathy, not elsewhere classified with diffuse crescentic glomerulonephritis

  • N07.8—

    Hereditary nephropathy, not elsewhere classified with other morphologic lesions

  • N07.9—

    Hereditary nephropathy, not elsewhere classified with unspecified morphologic lesions

  • N07.A—

    Hereditary nephropathy, not elsewhere classified with C3 glomerulonephritis

  • N07.B—

    Hereditary nephropathy, not elsewhere classified with APOL1-mediated kidney disease [AMKD]

  • N08—

    Glomerular disorders in diseases classified elsewhere

  • N10—

    Acute pyelonephritis

  • N11.0—

    Nonobstructive reflux-associated chronic pyelonephritis

  • N11.1—

    Chronic obstructive pyelonephritis

  • N11.8—

    Other chronic tubulo-interstitial nephritis

  • N11.9—

    Chronic tubulo-interstitial nephritis, unspecified

  • N12—

    Tubulo-interstitial nephritis, not specified as acute or chronic

  • N13.0—

    Hydronephrosis with ureteropelvic junction obstruction

  • N13.1—

    Hydronephrosis with ureteral stricture, not elsewhere classified

  • N13.2—

    Hydronephrosis with renal and ureteral calculous obstruction

  • N13.30—

    Unspecified hydronephrosis

  • N13.39—

    Other hydronephrosis

  • N13.4—

    Hydroureter

  • N13.5—

    Crossing vessel and stricture of ureter without hydronephrosis

  • N13.6—

    Pyonephrosis

  • N13.70—

    Vesicoureteral-reflux, unspecified

  • N13.71—

    Vesicoureteral-reflux without reflux nephropathy

  • N13.721—

    Vesicoureteral-reflux with reflux nephropathy without hydroureter, unilateral

  • N13.722—

    Vesicoureteral-reflux with reflux nephropathy without hydroureter, bilateral

  • N13.729—

    Vesicoureteral-reflux with reflux nephropathy without hydroureter, unspecified

  • N13.731—

    Vesicoureteral-reflux with reflux nephropathy with hydroureter, unilateral

  • N13.732—

    Vesicoureteral-reflux with reflux nephropathy with hydroureter, bilateral

  • N13.739—

    Vesicoureteral-reflux with reflux nephropathy with hydroureter, unspecified

  • N13.8—

    Other obstructive and reflux uropathy

  • N13.9—

    Obstructive and reflux uropathy, unspecified

  • N14.0—

    Analgesic nephropathy

  • N14.11—

    Contrast-induced nephropathy

  • N14.19—

    Nephropathy induced by other drugs, medicaments and biological substances

  • N14.2—

    Nephropathy induced by unspecified drug, medicament or biological substance

  • N14.3—

    Nephropathy induced by heavy metals

  • N14.4—

    Toxic nephropathy, not elsewhere classified

  • N15.0—

    Balkan nephropathy

  • N15.1—

    Renal and perinephric abscess

  • N15.8—

    Other specified renal tubulo-interstitial diseases

  • N15.9—

    Renal tubulo-interstitial disease, unspecified

  • N16—

    Renal tubulo-interstitial disorders in diseases classified elsewhere

  • N17.0—

    Acute kidney failure with tubular necrosis

  • N17.1—

    Acute kidney failure with acute cortical necrosis

  • N17.2—

    Acute kidney failure with medullary necrosis

  • N17.8—

    Other acute kidney failure

  • N17.9—

    Acute kidney failure, unspecified

  • N18.1—

    Chronic kidney disease, stage 1

  • N18.2—

    Chronic kidney disease, stage 2 (mild)

  • N18.30—

    Chronic kidney disease, stage 3 unspecified

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