Unspecified nephritic syndrome (N05) ICD-10-CM
The N05 code range covers unspecified nephritic syndrome with 12 ICD-10-CM diagnosis codes. 11 of them are billable and valid for claim submission in fiscal year 2027, and the category headers group them but cannot themselves be billed.
Includes
This note appears immediately under a three character code title to further define, or give examples of, the content of the category.
- glomerular disease NOS
- glomerulonephritis NOS
- nephritis NOS
- nephropathy NOS and renal disease NOS with morphological lesion specified in .0-.8
Type 1 Excludes
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.
Codes in the N05 Range 12 codes · 11 billable
- N05 Unspecified nephritic syndromeNon-billable
- N05.0 Unspecified nephritic syndrome with minor glomerular abnormality
- N05.1 Unspecified nephritic syndrome with focal and segmental glomerular lesions
- N05.2 Unspecified nephritic syndrome with diffuse membranous glomerulonephritis
- N05.3 Unspecified nephritic syndrome with diffuse mesangial proliferative glomerulonephritis
- N05.4 Unspecified nephritic syndrome with diffuse endocapillary proliferative glomerulonephritis
- N05.5 Unspecified nephritic syndrome with diffuse mesangiocapillary glomerulonephritis
- N05.6 Unspecified nephritic syndrome with dense deposit disease
- N05.7 Unspecified nephritic syndrome with diffuse crescentic glomerulonephritis
- N05.8 Unspecified nephritic syndrome with other morphologic changes
- N05.9 Unspecified nephritic syndrome with unspecified morphologic changes
- N05.A Unspecified nephritic syndrome with C3 glomerulonephritis
Clinical Terms in This Code Range
Definitions from the National Library of Medicine for conditions coded in the N05 range.
Glomerulonephritis
Inflammation of the renal glomeruli (KIDNEY GLOMERULUS) that can be classified by the type of glomerular injuries including antibody deposition, complement activation, cellular proliferation, and glomerulosclerosis. These structural and functional abnormalities usually lead to HEMATURIA; PROTEINURIA; HYPERTENSION; and RENAL INSUFFICIENCY.
Nephritis
Inflammation of any part of the KIDNEY.
About the N05 Code Range
Nephritic syndrome appears here within the glomerular disease group. The subdivisions distinguish the glomerular changes named in each title.
N05.0 names a minor abnormality, while N05.1 names focal and segmental lesions. Other codes distinguish diffuse patterns, dense deposit disease, and C3 glomerulonephritis. N05.8 identifies other changes in form, while N05.9 leaves those changes unspecified.
Questions About This Page
How many billable codes are in the N05 range?
Of the 12 codes in this range, 11 are billable and valid for claim submission from October 1, 2026 through September 30, 2027. Category header codes group them but cannot be reported on claims.
What does the N05 range classify?
The range classifies unspecified nephritic syndrome. Each code links to its own reference page with billing status, MS-DRG grouping, coding notes, and clinical information.
Related References
Source: CMS FY 2027 ICD-10-CM Tabular List and order file, effective October 1, 2026 through September 30, 2027.
