N08Glomerular disorders in diseases classified elsewhere

N08 is the ICD-10-CM diagnosis code for glomerular disorders in diseases classified elsewhere. It belongs to block N00-N08 (glomerular diseases) and chapter 14 (diseases of the genitourinary system). It is billable, so it can be reported on its own for dates of service from October 1, 2026 through September 30, 2027.

Don't report N08 together with the conditions in its Excludes1 note: antiglomerular basement membrane disease (M31.0), diabetes (E08-E13 with .21), gonococcal (A54.21), Goodpasture's syndrome (M31.0) and 8 more.

Code first underlying disease, such as: amyloidosis (E85.-), congenital syphilis (A50.5), cryoglobulinemia (D89.1), disseminated intravascular coagulation (D65) and 5 more.

It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.

In MS-DRG v44.0, it is part of the grouping logic for DRG 698 (Other Kidney and Urinary Tract Diagnoses with MCC, relative weight 1.6398), DRG 699 (Other Kidney and Urinary Tract Diagnoses with CC, relative weight 1.0003) and DRG 700 (Other Kidney and Urinary Tract Diagnoses without CC/MCC, relative weight 0.6741), in MDC 11 (Diseases and Disorders of the Kidney and Urinary Tract), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.

It is a manifestation code, so it describes the effect of an underlying disease and can't be the principal diagnosis. Code the underlying condition first.

It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.

Before ICD-10, this condition was coded in ICD-9-CM as 583.81 (nephritis and nephropathy, not specified as acute or chronic, in diseases classified elsewhere).