N26

Unspecified contracted kidney

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Coding notes

Excludes 1 never coded together · Excludes 2 may co-exist

This code · N26
Excludes 1

contracted kidney due to hypertension (I12.-) diffuse sclerosing glomerulonephritis (N05.8.-) hypertensive nephrosclerosis (arteriolar) (arteriosclerotic) (I12.-) small kidney of unknown cause (N27.-)

Inherited from N25-N29Other disorders of kidney and ureter
Excludes 2

disorders of kidney and ureter with urolithiasis (N20-N23)

Inherited from chapter 14Diseases of the genitourinary system
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)

Official Guidelines for N26

FY 2026 ›
I.C.14Chapter-specific guidanceChapter 14: Diseases of Genitourinary System (N00-N99)

Subsections