N26

Non-billable

Unspecified contracted kidney

N26 is the ICD-10-CM code for Unspecified contracted kidney. It is a non-billable category code — use a more specific child code such as N26.1 for billing.

Status
Header (non-billable)
Chapter
N00-N99
Subcodes
3
Edition
FY2026

N00-N99 Diseases of the genitourinary system

Excludes1 — not coded here

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

Frequently asked questions

What is ICD-10 code N26?
N26 is the ICD-10-CM code for "Unspecified contracted kidney". It falls under N00-N99 Diseases of the genitourinary system.
Is N26 a billable code?
No — N26 is a non-billable header code. Use a more specific child code (such as N26.1) for billing.
What are the subcodes of N26?
N26 has 3 more specific child codes, including N26.1, N26.2, N26.9.
What is excluded from N26?
Excludes1 (not coded here): contracted kidney due to hypertension (I12.-); diffuse sclerosing glomerulonephritis (N05.8.-); hypertensive nephrosclerosis (arteriolar) (arteriosclerotic) (I12.-); small kidney of unknown cause (N27.-).

Source: CMS ICD-10-CM FY2026. For informational purposes only — not medical advice. See our medical disclaimer.

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