Other disorders of kidney and ureter (N25-N29)
N25Disorders resulting from impaired renal tubular function
N25.0Renal osteodystrophy
› Azotemic osteodystrophy
› Phosphate-losing tubular disorders
› Renal rickets
› Renal short stature
Excludes 2: metabolic disorders classifiable to E70-E88
N25.1Nephrogenic diabetes insipidus
Excludes 1: diabetes insipidus NOS (E23.2)
N25.8Other disorders resulting from impaired renal tubular function
N25.81Secondary hyperparathyroidism of renal origin
Excludes 1: secondary hyperparathyroidism, non-renal (E21.1)
Excludes 2: metabolic disorders classifiable to E70-E88
N25.89Other disorders resulting from impaired renal tubular function
› Hypokalemic nephropathy
› Lightwood-Albright syndrome
› Renal tubular acidosis NOS
N25.9Disorder resulting from impaired renal tubular function, unspecified
N26Unspecified contracted kidney
Excludes 1: contracted kidney due to hypertension (I12.-)
› diffuse sclerosing glomerulonephritis (N05.8.-)
› hypertensive nephrosclerosis (arteriolar) (arteriosclerotic) (I12.-)
› small kidney of unknown cause (N27.-)
N26.1Atrophy of kidney (terminal)
N26.2Page kidney
N26.9Renal sclerosis, unspecified
N27Small kidney of unknown cause
Includes: oligonephronia
N27.0Small kidney, unilateral
N27.1Small kidney, bilateral
N27.9Small kidney, unspecified
N28Other disorders of kidney and ureter, not elsewhere classified
N28.0Ischemia and infarction of kidney
› Renal artery embolism
› Renal artery obstruction
› Renal artery occlusion
› Renal artery thrombosis
› Renal infarct
Excludes 1: atherosclerosis of renal artery (extrarenal part) (I70.1)
› congenital stenosis of renal artery (Q27.1)
› Goldblatt's kidney (I70.1)
N28.1Cyst of kidney, acquired
› Cyst (multiple) (solitary) of kidney (acquired)
Excludes 1: cystic kidney disease (congenital) (Q61.-)
N28.8Other specified disorders of kidney and ureter
Excludes 1: hydroureter (N13.4)
› ureteric stricture with hydronephrosis (N13.1)
› ureteric stricture without hydronephrosis (N13.5)
N28.81Hypertrophy of kidney
N28.82Megaloureter
N28.83Nephroptosis
N28.84Pyelitis cystica
N28.85Pyeloureteritis cystica
N28.86Ureteritis cystica
N28.89Other specified disorders of kidney and ureter
N28.9Disorder of kidney and ureter, unspecified
› Nephropathy NOS
› Renal disease (acute) NOS
› Renal insufficiency (acute)
Excludes 1: chronic renal insufficiency (N18.9)
› unspecified nephritic syndrome (N05.-)
N29Other disorders of kidney and ureter in diseases classified elsewhere
Code First: underlying disease, such as:
› amyloidosis (E85.-)
› nephrocalcinosis (E83.59)
› schistosomiasis (B65.0-B65.9)
Excludes 1: disorders of kidney and ureter in:
› cystinosis (E72.0)
› gonorrhea (A54.21)
› syphilis (A52.75)
› tuberculosis (A18.11)