N26.1 Atrophy of kidney (terminal)

Billable ICD-10-CM code, FY2026.

Applies from N26 Unspecified contracted kidney

Excludes1 (never code together)

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

MS-DRG index

Defines the logic of DRG(s) 698-700 in MDC 11.

Approximate ICD-9-CM (GEMs)

• 587 Renal sclerosis, unspecified (approximate)

Diagnosis Index entries for N26.1

• Atrophy, atrophic (of) › kidney (senile) (terminal)
• Atrophy, atrophic (of) › renal

Nearby codes

• N26 Unspecified contracted kidney
• N26.1 Atrophy of kidney (terminal) (this code)
• N26.2 Page kidney
• N26.9 Renal sclerosis, unspecified