All ICD10 Codes
N08Billable, valid for claims from October 1, 2026

Glomerular disorders in diseases classified elsewhere

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

  • N08 is billable and valid on claims for FY 2027. If the record has more detail, check the other codes under N00-N08 below.
  • As a secondary diagnosis it is not a CC or MCC, so it doesn't raise the MS-DRG payment.
  • Doesn't count toward a Medicare Advantage risk score (no HCC in V28).
  • AHRQ's Chronic Condition Indicator classes it as not chronic (an acute or short-term condition).
  • Can't be the principal diagnosis: code the underlying condition first. (Manifestation list)

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Instructional notes

Includes: conditions that are coded here

  • Glomerulonephritis
  • Nephritis
  • Nephropathy

Excludes1: not coded here, use a different code

  • glomerulonephritis, nephritis and nephropathy (in):
  • antiglomerular basement membrane disease (M31.0)
  • diabetes (E08-E13 with .21)
  • gonococcal (A54.21)
  • Goodpasture's syndrome (M31.0)
  • hemolytic-uremic syndrome (D59.3-)
  • lupus (M32.14)
  • mumps (B26.83)
  • syphilis (A52.75)
  • systemic lupus erythematosus (M32.14)
  • Wegener's granulomatosis (M31.31)
  • pyelonephritis in diseases classified elsewhere (N16)
  • renal tubulo-interstitial disorders classified elsewhere (N16)

Code first: code the underlying condition first, then this code

  • underlying disease, such as:
  • amyloidosis (E85.-)
  • congenital syphilis (A50.5)
  • cryoglobulinemia (D89.1)
  • disseminated intravascular coagulation (D65)
  • gout (M1A.-, M10.-)
  • microscopic polyangiitis (M31.7)
  • multiple myeloma (C90.0-)
  • sepsis (A40.0-A41.9)
  • sickle-cell disease (D57.0-D57.8)

Also applies, from Glomerular diseases (N00-N08)

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

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.

Read Section I.C.14 (page 62)

Other codes under N00-N08

Glomerular diseases (N00-N08)

N08 MS-DRGs

As the principal diagnosis, N08 groups 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.

Related conditions

Grouped by AHRQ's Clinical Classifications Software Refined (CCSR), which sorts every diagnosis code into clinically meaningful categories.

N08 is in Nephritis; nephrosis; renal sclerosis (GEN001), with 130 codes. Others in it:

  • A36.84 Diphtheritic tubulo-interstitial nephropathy
  • A51.44 Secondary syphilitic nephritis
  • B26.83 Mumps nephritis
  • B52.0 Plasmodium malariae malaria with nephropathy
  • B58.83 Toxoplasma tubulo-interstitial nephropathy
  • E08.21 Diabetes mellitus due to underlying condition with diabetic nephropathy
  • E09.21 Drug or chemical induced diabetes mellitus with diabetic nephropathy
  • E10.21 Type 1 diabetes mellitus with diabetic nephropathy

Medicare coverage articles listing N08

These 4 Medicare billing and coding articles list N08 as a diagnosis that supports medical necessity for the services they cover. From the CMS Medicare Coverage Database; check your own contractor's article before billing.

Other codes that refer to N08

Notes on these codes point to N08.

  • M10 Use Additional Code: Glomerular disorders in diseases classified elsewhere (N08)
  • M1A Use Additional Code: Glomerular disorders in diseases classified elsewhere (N08)

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.

ICD-9-CM equivalent

Legacy crosswalk from the CMS General Equivalence Mappings (last updated 2018).

  • 583.81 Nephritis and nephropathy, not specified as acute or chronic, in diseases classified elsewhere (approximate)
ICD-9 to ICD-10 converter