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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  • N14—

    Drug- and heavy-metal-induced tubulo-interstitial and tubular conditions

  • N14.0—

    Analgesic nephropathy

  • N14.1—

    Nephropathy induced by other drugs, medicaments and biological substances

  • 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—

    Other renal tubulo-interstitial diseases

  • 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—

    Acute kidney failure

  • 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—

    Chronic kidney disease (CKD)

  • N18.1—

    Chronic kidney disease, stage 1

  • N18.2—

    Chronic kidney disease, stage 2 (mild)

  • N18.3—

    Chronic kidney disease, stage 3 (moderate)

  • N18.30—

    Chronic kidney disease, stage 3 unspecified

  • N18.31—

    Chronic kidney disease, stage 3a

  • N18.32—

    Chronic kidney disease, stage 3b

  • N18.4—

    Chronic kidney disease, stage 4 (severe)

  • N18.5—

    Chronic kidney disease, stage 5

  • N18.6—

    End stage renal disease

  • N18.9—

    Chronic kidney disease, unspecified

  • N19—

    Unspecified kidney failure

  • N20—

    Calculus of kidney and ureter

  • N20.0—

    Calculus of kidney

  • N20.1—

    Calculus of ureter

  • N20.2—

    Calculus of kidney with calculus of ureter

  • N20.9—

    Urinary calculus, unspecified

  • N21—

    Calculus of lower urinary tract

  • N21.0—

    Calculus in bladder

  • N21.1—

    Calculus in urethra

  • N21.8—

    Other lower urinary tract calculus

  • N21.9—

    Calculus of lower urinary tract, unspecified

  • N22—

    Calculus of urinary tract in diseases classified elsewhere

  • N23—

    Unspecified renal colic

  • N25—

    Disorders resulting from impaired renal tubular function

  • N25.0—

    Renal osteodystrophy

  • N25.1—

    Nephrogenic diabetes insipidus

  • N25.8—

    Other disorders resulting from impaired renal tubular function

  • N25.81—

    Secondary hyperparathyroidism of renal origin

  • N25.89—

    Other disorders resulting from impaired renal tubular function

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