2026 ICD-10-CM Diagnosis Code N18.5Chronic kidney disease, stage 5
ICD-10-CM Codes›N00–N99›N17-N19›CKD
- Billable — Valid for Submission
- Chronic Condition
N18.5 is a billable ICD-10-CM diagnosis code for chronic kidney disease, stage 5. 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
Code Classification
Approximate SynonymsGuidance
Alternate terms and clinical phrases that map to this code.
- Anemia in chronic kidney disease
- Anemia in chronic kidney disease stage 5
- Benign hypertensive heart disease
- Benign hypertensive heart disease and chronic renal disease stage 5
- Chronic kidney disease due to benign hypertension
- Chronic kidney disease stage 5
- Chronic kidney disease stage 5 due to benign hypertension
- Chronic kidney disease stage 5 due to drug induced diabetes mellitus
- Chronic kidney disease stage 5 due to hypertension
- Chronic kidney disease stage 5 due to type 1 diabetes mellitus
- Chronic kidney disease stage 5 due to type 2 diabetes mellitus
- Chronic kidney disease stage 5 on dialysis
- Chronic kidney disease stage 5 with transplant
- Disorder of kidney due to drug induced diabetes mellitus
- Hypertension in chronic kidney disease due to type 1 diabetes mellitus
- Hypertension in chronic kidney disease due to type 2 diabetes mellitus
- Hypertension in chronic kidney disease stage 5 due to type 1 diabetes mellitus
- Hypertension in chronic kidney disease stage 5 due to type 2 diabetes mellitus
- Hypertensive heart AND chronic kidney disease stage 5
- Inflammation of retina due to chronic kidney disease stage 5
- Malignant hypertensive chronic kidney disease
- Malignant hypertensive chronic kidney disease stage 5
- Malignant hypertensive renal disease
- Nephropathy due to secondary diabetes mellitus
- Renal retinopathy
Tabular List NotesGuidance
Coding notes and annotation back-references applicable to this code.
Type 1 Excludes
- chronic kidney disease, stage 5 requiring chronic dialysis N18.6
A type 1 excludes note is a pure excludes note. It means "NOT CODED HERE!" An Excludes1 note indicates that the code excluded should never be used at the same time as the code above the Excludes1 note. An Excludes1 is used when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
Index to Diseases and InjuriesGuidance
Alphabetical index entries that point to this code.
- Disease, diseased - See Also: Syndrome;
External Cause of Injuries IndexGuidance
References for this code in the External Cause of Injuries Index.
- Disease, diseased
- kidney (functional) (pelvis)
- chronic
- stage 5
Clinical ClassificationClinical
AHRQ’s CCSR groups this code into broader clinical categories.
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 N18.5 to ICD-9-CMHistory
The closest ICD-9-CM equivalents under the General Equivalence Mappings.
Code HistoryHistory
Questions About N18.5Overview
Is N18.5 (Chronic kidney disease (CKD)) a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report chronic kidney disease, stage 5 on HIPAA-covered claims from October 1, 2025 through September 30, 2026.
What MS-DRG does N18.5 group to?
When chronic kidney disease, stage 5 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 N18.5?
Under the General Equivalence Mappings, chronic kidney disease, stage 5 converts to ICD-9-CM 585.5 (chron kidney dis stage V). 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.
