N26 – Unspecified contracted kidney

ICD-10-CM 2027 diagnosis code · Other disorders of kidney and ureter

Non-billable header

ICD-10-CM code N26
Code
N26 (claims format: N26)
Description
Unspecified contracted kidney
Billable
No – use a more specific code below
Valid for
Dates of service October 1, 2026 – September 30, 2027 (FY2027)
Chapter
14. Diseases of the genitourinary system (N00-N99)
Block
N25-N29 Other disorders of kidney and ureter

Billable codes under N26

N26 is a header code and cannot be used on claims. Choose the most specific code:

Notes for 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.-)

Notes inherited from parent codes

Instructional notes at a category or block level apply to every code below it.

Block N25-N29

Excludes2 (not included here):
  • disorders of kidney and ureter with urolithiasis (N20-N23)

Frequently asked questions

What is ICD-10 code N26?

N26 is the ICD-10-CM code for unspecified contracted kidney, in the block N25-N29 (Other disorders of kidney and ureter).

Is N26 a billable code?

No. N26 is a header code with more specific child codes; report one of the billable codes listed above.

Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.