All ICD10 Codes
N25Not billable, use a more specific code below

Disorders resulting from impaired renal tubular function

In Other disorders of kidney and ureter (N25-N29), chapter 14: Diseases of the Genitourinary System

5 billable codes under N25: 2 are a CC; none map to an HCC.A CC or MCC (major CC) is a secondary diagnosis that raises the MS-DRG payment.

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Instructional notes

Also applies, from Other disorders of kidney and ureter (N25-N29)

These notes sit on N25-N29 and apply to every code under it, including N25.

Excludes2: not included here, code separately if applicable

  • disorders of kidney and ureter with urolithiasis (N20-N23)

Official coding guidelines

From the ICD-10-CM Official Guidelines for Coding and Reporting, FY 2027 (CMS and NCHS). Links open the PDF at the right page.

Covers chronic kidney disease staging, CKD in kidney transplant patients, and sequencing CKD with related conditions such as diabetes and hypertension.

Read Section I.C.14 (page 62)

All codes under N25

N25 can't be used on a claim. Pick a billable code below; grey headings group them.

N25 MS-DRGs

As the principal diagnosis, all 5 billable codes under N25 group to MS-DRG 698, 699, or 700 (v44.0). Which one applies depends on procedures performed, secondary diagnoses (CC/MCC), and the patient's age and discharge status.

About the condition

Plain-language background from MedlinePlus (National Library of Medicine), not coding guidance.

Kidney Diseases

You have two kidneys, each about the size of your fist. They are near the middle of your back, just below the rib cage. Inside each kidney there are about a million tiny structures called nephrons. They filter your blood. They remove wastes and extra water, which become urine. The urine flows through tubes called ureters. It goes to your bladder, which stores the urine until you go to the bathroom.

Read more about kidney diseases on MedlinePlus

Code history

Valid since FY2016, when ICD-10-CM took effect on October 1, 2015. No changes since.