Diseases of the genitourinary system (N00-N99)

Excludes 2:
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)

Other disorders of kidney and ureter (N25-N29)

Excludes 2:
disorders of kidney and ureter with urolithiasis (N20-N23)
N25 Disorders resulting from impaired renal tubular function [+]
N26 Unspecified 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.-)
N27 Small kidney of unknown cause [+]
Includes: oligonephronia
N28 Other disorders of kidney and ureter, not elsewhere classified [+]
N29 Other 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)

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