2026 ICD-10-CM Diagnosis Code N18.6End stage renal disease

ICD-10-CM Codes›N00–N99›N17-N19›CKD

ICD-10-CM N18.6
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

N18.6 is a billable ICD-10-CM diagnosis code for end stage renal disease. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRG 673 through 675, 682 through 684. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Chronic kidney disease.

Code Identity

ICD-10-CM Code
N18.6
Billable Status
Yes — Valid for Submission
Code Describes
End stage renal disease
Short Description
End stage renal disease
Same as the full description in the CMS dataset.
Parent Code
N18
Chronic kidney disease (CKD)

Code Classification

ChapterN00–N99Diseases of the genitourinary system
SectionN17-N19Acute kidney failure and chronic kidney disease
CategoryCKDChronic kidney disease (N18)
This CodeN18.6End stage renal disease

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Anemia in chronic kidney disease
  • Anemia in end stage renal disease
  • Anemia of renal disease
  • Anemia secondary to renal failure
  • Cardiorenal syndrome
  • Chronic kidney disease due to benign hypertension
  • Dependence on continuous ambulatory peritoneal dialysis
  • Dependence on continuous ambulatory peritoneal dialysis due to end stage renal disease
  • Dependence on dialysis due to end stage renal disease
  • Dependence on energy-dependent medical equipment and/or device
  • Dependence on hemodialysis
  • Dependence on hemodialysis due to end stage renal disease
  • Dependence on peritoneal dialysis
  • Dependence on peritoneal dialysis due to end stage renal disease
  • Dependence on renal dialysis
  • Disorder of kidney due to drug induced diabetes mellitus
  • End stage renal disease due to benign hypertension
  • End stage renal disease due to hypertension
  • End stage renal disease on dialysis due to drug induced diabetes mellitus
  • End stage renal disease on dialysis due to hypertension
  • End stage renal disease on dialysis due to type 1 diabetes mellitus
  • End stage renal disease on dialysis due to type 2 diabetes mellitus
  • End stage renal failure on dialysis
  • End stage renal failure untreated by renal replacement therapy
  • End stage renal failure with renal transplant
  • End-stage renal disease
  • Hyperparathyroidism due to end stage renal disease on dialysis
  • Hyperparathyroidism due to renal insufficiency
  • Hypertension concurrent and due to end stage renal disease on dialysis
  • Hypertension concurrent and due to end stage renal disease on dialysis due to type 1 diabetes mellitus
  • Hypertension concurrent and due to end stage renal disease on dialysis due to type 2 diabetes mellitus
  • Hypertension in chronic kidney disease due to type 1 diabetes mellitus
  • Hypertension in chronic kidney disease due to type 2 diabetes mellitus
  • Hypertensive heart and renal disease with both heart failure and renal failure
  • Hypertensive heart and renal disease with renal failure
  • Hypertensive renal failure
  • Malignant hypertensive chronic kidney disease
  • Malignant hypertensive end stage renal disease
  • Malignant hypertensive end stage renal disease on dialysis
  • Malignant hypertensive renal disease
  • Nephropathy due to secondary diabetes mellitus
  • Postoperative renal impairment
  • Secondary hyperparathyroidism

Tabular List NotesGuidance

Coding notes and annotation back-references applicable to this code.

Inclusion Terms

  • Chronic kidney disease requiring chronic dialysis

Use Additional Code

  • code to identify dialysis status Z99.2

Index to Diseases and InjuriesGuidance

Alphabetical index entries that point to this code.

External Cause of Injuries IndexGuidance

References for this code in the External Cause of Injuries Index.

    • Disease, diseased
      • end stage renal (ESRD)
    • Disease, diseased
      • renal (functional) (pelvis)
        • end-stage (failure)
    • Failure, failed
      • renal
        • end stage (chronic)

Clinical ClassificationClinical

AHRQ’s CCSR groups this code into broader clinical categories.

CCSR GEN003
Chronic kidney disease
Default principal diagnosis: inpatient Yes · outpatient Yes

Clinical InformationClinical

  • Cardiorenal Syndrome

    a disorder of the heart and kidneys in which dysfunction of one of the organs induces dysfunction of the other organ.

  • Secondary Hyperparathyroidism

    overproduction of parathyroid hormone in response to influence external to the parathyroid glands.

Patient EducationClinical

Kidney Failure

Healthy kidneys clean your blood by removing excess fluid, minerals, and wastes. They also make hormones that keep your bones strong and your blood healthy. But if the kidneys are damaged, they don't work properly. Harmful wastes can build up in your body. Your blood pressure may rise.

Read the full article at MedlinePlus

Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.

Convert N18.6 to ICD-9-CMHistory

The closest ICD-9-CM equivalents under the General Equivalence Mappings.

ICD-9-CM
585.6 End stage renal disease
Exact Match The mapping is direct, with no qualifiers.

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2025No changes
FY 2026CurrentCurrent code set, no changesEffective October 1, 2025 through September 30, 2026.

Questions About N18.6Overview

Is N18.6 (Chronic kidney disease (CKD)) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report end stage renal disease on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

What MS-DRG does N18.6 group to?

When end stage renal disease is the principal diagnosis on an inpatient stay, it groups to MS-DRG 673, 674, 675, 682, 683, 684, with relative weights from 0.6003 to 4.2016 depending on complications. Higher weights mean higher Medicare reimbursement.

What is the ICD-9 equivalent of N18.6?

Under the General Equivalence Mappings, end stage renal disease converts to ICD-9-CM 585.6 (end stage renal disease). The mapping is a direct match.

Footnotes

[1] Chronic - a chronic condition code indicates a condition lasting 12 months or longer and its effect on the patient based on one or both of the following criteria:

  • The condition results in the need for ongoing intervention with medical products,treatment, services, and special equipment
  • The condition places limitations on self-care, independent living, and social interactions.