Chronic nephritic syndrome (N03)
The ICD-10 code N03 and its subcodes classify various forms of chronic nephritic syndrome, a long-term kidney disorder characterized by inflammation and damage to the glomeruli. These codes specify different pathological patterns of kidney involvement, assisting healthcare providers in documenting precise diagnoses for chronic kidney conditions.
Each subcode under N03 reflects distinctive morphological changes in the kidney's filtering units. For example, N03.0 represents chronic nephritic syndrome with minor glomerular abnormalities, while N03.2 covers cases with diffuse membranous glomerulonephritis. Synonyms such as “nephritic syndrome,” “chronic focal glomerulonephritis” (N03.1), “dense deposit disease” (N03.6), and “C3 glomerulonephritis” (N03.A) are linked to specific codes to clarify coding choices. Medical coders use these classifications to capture the precise variant of chronic nephritic syndrome, improving clinical clarity and supporting targeted treatment decisions. The ICD-10 code for chronic nephritic syndrome helps professionals distinguish among nephritis types like mesangial proliferative, endocapillary proliferative, and crescentic glomerulonephritis, ensuring accurate medical records and claims processing.
Diseases of the genitourinary system (N00–N99)
Glomerular diseases (N00-N08)
N03 Chronic nephritic syndrome
- N03.0 Chronic nephritic syndrome with minor glomerular abnormality
- N03.1 Chronic nephritic syndrome with focal and segmental glomerular lesions
- N03.2 Chronic nephritic syndrome with diffuse membranous glomerulonephritis
- N03.3 Chronic nephritic syndrome with diffuse mesangial proliferative glomerulonephritis
- N03.4 Chronic nephritic syndrome with diffuse endocapillary proliferative glomerulonephritis
- N03.5 Chronic nephritic syndrome with diffuse mesangiocapillary glomerulonephritis
- N03.6 Chronic nephritic syndrome with dense deposit disease
- N03.7 Chronic nephritic syndrome with diffuse crescentic glomerulonephritis
- N03.8 Chronic nephritic syndrome with other morphologic changes
- N03.9 Chronic nephritic syndrome with unspecified morphologic changes
- N03.A Chronic nephritic syndrome with C3 glomerulonephritis
Chronic nephritic syndrome (N03)
Instructional Notations
Includes
This note appears immediately under a three character code title to further define, or give examples of, the content of the category.
- chronic glomerular disease
- chronic glomerulonephritis
- chronic nephritis
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.
