Is ICD-10-CM code N06 billable?

No, N06 (Isolated proteinuria with specified morphological lesion) is a non-billable ICD-10-CM code. It must be coded to a more specific subcategory before it can be used for reimbursement.

What chapter does ICD-10-CM code N06 belong to?

N06 belongs to Chapter 14 of the ICD-10-CM tabular list: N00–N99 (Diseases of the Genitourinary System).

N06Not billable, use a more specific code below

Isolated proteinuria with specified morphological lesion

In Glomerular diseases (N00-N08), chapter 14: Diseases of the Genitourinary System

14 billable codes under N06: 8 are a CC; none map to an HCC.A CC or MCC (major CC) is a secondary diagnosis that raises the MS-DRG payment.

Instructional notes

Excludes1: not coded here, use a different code

Proteinuria not associated with specific morphologic lesions (R80.0)

Also applies, from Glomerular diseases (N00-N08)

These notes sit on N00-N08 and apply to every code under it, including N06.

Excludes1: not coded here, use a different code

hypertensive chronic kidney disease (I12.-)

Code also: add a code for this too, order depends on the encounter

any associated kidney failure (N17-N19).

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.

Chronic kidney disease (page 62)

Read Section I.C.14 (page 62)

All codes under N06

N06 can't be used on a claim. Pick a billable code below; grey headings group them.

N06 MS-DRGs

As the principal diagnosis, all 14 billable codes under N06 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.

Other codes that refer to N06

Notes on these codes point to N06.

R80.0 Excludes1: isolated proteinuria with specific morphological lesion (N06.-)

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.

Urine and Urination

Your kidneys make urine by filtering wastes and extra water from your blood. The waste is called urea. Your blood carries it to the kidneys. From the kidneys, urine travels down two thin tubes called ureters to the bladder. The bladder stores urine until you are ready to urinate. It swells into a round shape when it is full and gets smaller when empty. If your urinary system is healthy, your bladder can hold up to 16 ounces (2 cups) of urine comfortably for 2 to 5 hours.

Code history

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