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
PrevNext
  • 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

  • N20.0—

    Calculus of kidney

  • N20.1—

    Calculus of ureter

  • N20.2—

    Calculus of kidney with calculus of ureter

  • N20.9—

    Urinary calculus, unspecified

  • 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

  • N25.0—

    Renal osteodystrophy

  • N25.1—

    Nephrogenic diabetes insipidus

  • N25.81—

    Secondary hyperparathyroidism of renal origin

  • N25.89—

    Other disorders resulting from impaired renal tubular function

  • N25.9—

    Disorder resulting from impaired renal tubular function, unspecified

  • N26.1—

    Atrophy of kidney (terminal)

  • N26.2—

    Page kidney

  • N26.9—

    Renal sclerosis, unspecified

  • N27.0—

    Small kidney, unilateral

  • N27.1—

    Small kidney, bilateral

  • N27.9—

    Small kidney, unspecified

  • N28.0—

    Ischemia and infarction of kidney

  • N28.1—

    Cyst of kidney, acquired

  • N28.81—

    Hypertrophy of kidney

  • N28.82—

    Megaloureter

  • N28.83—

    Nephroptosis

  • N28.84—

    Pyelitis cystica

  • N28.85—

    Pyeloureteritis cystica

  • N28.86—

    Ureteritis cystica

  • N28.89—

    Other specified disorders of kidney and ureter

  • N28.9—

    Disorder of kidney and ureter, unspecified

  • N29—

    Other disorders of kidney and ureter in diseases classified elsewhere

  • N30.00—

    Acute cystitis without hematuria

  • N30.01—

    Acute cystitis with hematuria

  • N30.10—

    Interstitial cystitis (chronic) without hematuria

  • N30.11—

    Interstitial cystitis (chronic) with hematuria

  • N30.20—

    Other chronic cystitis without hematuria

  • N30.21—

    Other chronic cystitis with hematuria

  • N30.30—

    Trigonitis without hematuria

  • N30.31—

    Trigonitis with hematuria

  • N30.40—

    Irradiation cystitis without hematuria

  • N30.41—

    Irradiation cystitis with hematuria

  • N30.80—

    Other cystitis without hematuria

PreviousPage 4 of 17Next