N26.1 – Atrophy of kidney (terminal)

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

Billable code

ICD-10-CM code N26.1
Code
N26.1 (claims format: N261)
Description
Atrophy of kidney (terminal)
Billable
Yes – valid for HIPAA-covered transactions
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
Parent codes
N26

Notes inherited from parent codes

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

N26 – Unspecified contracted kidney

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.-)

Block N25-N29

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

Index terms for N26.1

Entries in the ICD-10-CM alphabetic index that lead to this code:

Related codes in N26

Frequently asked questions

What is ICD-10 code N26.1?

N26.1 is the ICD-10-CM code for atrophy of kidney (terminal), in the block N25-N29 (Other disorders of kidney and ureter).

Is N26.1 a billable code?

Yes. N26.1 is a billable/specific code that can be used to indicate a diagnosis for reimbursement purposes.

What category does N26.1 belong to?

It belongs to category N26 – Unspecified contracted kidney.

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.