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

Other disorders of kidney and ureter
(N25-N29)

Excludes: with urolithiasis ( N20-N23 )

N25 Disorders resulting from impaired renal tubular function
Excludes: metabolic disorders classifiable to E70-E90
N25.0 Renal osteodystrophy
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
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
Atrophy of kidney (terminal)
Renal sclerosis NOS
Excludes: contracted kidney with 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
Excludes: 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
Renal artery:
· embolism
· obstruction
· occlusion
· thrombosis
Renal infarct
Excludes: Goldblatt's kidney ( I70.1 )
renal artery (extrarenal part):
· atherosclerosis ( I70.1 )
· congenital stenosis ( Q27.1 )
N28.1 Cyst of kidney, acquired
Cyst (multiple)(solitary) of kidney, acquired
Excludes: cystic kidney disease (congenital) ( Q61.- )
N28.8 Other specified disorders of kidney and ureter
Hypertrophy of kidney
Megaloureter
Nephroptosis
Pyelitis
Pyeloureteritis
Ureteritis
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cystica
Ureterocele
N28.9 Disorder of kidney and ureter, unspecified
Nephropathy NOS
Renal disease NOS
Excludes: 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
Disorders of kidney and ureter in:
· schistosomiasis [bilharziasis] ( B65.-+ )
· tuberculosis ( A18.1+ )
N29.8* Other disorders of kidney and ureter in other diseases classified elsewhere