Chapter XIV
Diseases of the genitourinary system
(N00-N99)

Rules Conventions GCS

Other disorders of kidney and ureter
(N25-N29)

Excl.:
with urolithiasis ( N20-N23)

N25 Disorders resulting from impaired renal tubular function

Excl.:
metabolic disorders classifiable to E70-E90
N25.0 Renal osteodystrophy
Incl.:
Azotaemic osteodystrophy
Phosphate-losing tubular disorders
Renal:
  • rickets
  • short stature
N25.1 Nephrogenic diabetes insipidus
N25.8 Other disorders resulting from impaired renal tubular function
Incl.:
Lightwood-Albright syndrome
Renal tubular acidosis NOS
Secondary hyperparathyroidism of renal origin
N25.9 Disorder resulting from impaired renal tubular function, unspecified

N26 Unspecified contracted kidney
DCS.IX.2

Incl.:
Atrophy of kidney (terminal)
Renal sclerosis NOS
Excl.:
contracted kidney due to hypertension ( I12.-)
diffuse sclerosing glomerulonephritis ( N18.-)
hypertensive nephrosclerosis (arteriolar)(arteriosclerotic) ( I12.-)
small kidney of unknown cause ( N27.-)

N27 Small kidney of unknown cause

N27.0 Small kidney, unilateral
N27.1 Small kidney, bilateral
N27.9 Small kidney, unspecified

N28 Other disorders of kidney and ureter, not elsewhere classified

Excl.:
hydroureter ( N13.4)
renal disease:
  • acute NOS (N00.9)
  • chronic NOS (N03.9)
ureteric kinking and stricture:
  • with hydronephrosis (N13.1)
  • without hydronephrosis (N13.5)
N28.0 Ischaemia and infarction of kidney
Incl.:
Renal artery:
  • embolism
  • obstruction
  • occlusion
  • thrombosis
Renal infarct
Excl.:
Goldblatt kidney ( I70.1)
renal artery (extrarenal part):
  • atherosclerosis (I70.1)
  • congenital stenosis (Q27.1)
N28.1 Cyst of kidney
Incl.:
Cyst (acquired)(multiple)(solitary) of kidney
Excl.:
cystic kidney disease, congenital ( Q61.-)
N28.8 Other specified disorders of kidney and ureter
Incl.:
Hypertrophy of kidney
Megaloureter
Nephroptosis
  • Pyelitis
  • Pyeloureteritis
  • Ureteritis
  • cystica
Ureterocele
N28.9 Disorder of kidney and ureter, unspecified
Incl.:
Nephropathy NOS
Renal disease NOS
Excl.:
nephropathy NOS and renal disease NOS with morphological lesion specified in .0-.8 before N00.- ( N05.-)

N29* Other disorders of kidney and ureter in diseases classified elsewhere

N29.0* Late syphilis of kidney (A52.7†)
N29.1* Other disorders of kidney and ureter in infectious and parasitic diseases classified elsewhere
Incl.:
Disorders of kidney and ureter in:
N29.8* Other disorders of kidney and ureter in other diseases classified elsewhere
Incl.:
Cystine storage disease ( E72.0†)