N03 (Chronic nephritic syndrome) is an umbrella ICD-10-CM medical diagnosis code in the Diseases of the genitourinary system chapter. It identifies cases of chronic nephritic syndrome for clinical documentation, billing and epidemiological tracking.

ICD-10-CM · Category

N03 — Chronic nephritic syndrome

Chapter N00-N99: Diseases of the genitourinary system

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Sub-codes under N03

N03.0Chronic nephritic syndrome with minor glomerular abnormalityN03.1Chronic neph syndrome w focal and seg glomerular lesionsN03.2Chronic nephritic syndrome w diffuse membranous glomrlnephN03.3Chronic neph syndrome w diffuse mesangial prolif glomrlnephN03.4Chronic neph syndrome w diffuse endocaplry prolif glomrlnephN03.5Chronic nephritic syndrome w diffuse mesangiocap glomrlnephN03.6Chronic nephritic syndrome with dense deposit diseaseN03.7Chronic nephritic syndrome w diffuse crescentic glomrlnephN03.8Chronic nephritic syndrome with other morphologic changesN03.9Chronic nephritic syndrome with unsp morphologic changesN03.AChronic nephritic syndrome with C3 glomerulonephritis

Common questions about N03 (Chronic nephritic syndrome)

What does ICD-10 code N03 mean?
N03 is the ICD-10-CM 2025 code for Chronic nephritic syndrome. ICD-10-CM is the medical coding system used by clinicians, hospitals and insurers worldwide to classify diseases and conditions in a standard way.
Is N03 a billable diagnosis code?
N03 is a category-level (umbrella) code rather than a billable specific code. For billing purposes, clinicians typically use a more specific sub-code under N03. Browse the sub-codes listed on this page.
Which ICD-10 chapter does N03 belong to?
N03 belongs to the chapter "Diseases of the genitourinary system" (codes N00-N99). ICD-10-CM organises codes into 22 chapters by body system or condition type, which helps clinicians navigate related diagnoses.
Where can I get plain-language information about Chronic nephritic syndrome?
For a plain-language explanation of Chronic nephritic syndrome, ask GoDavaii's Health AI - it explains medical conditions in 90+ languages, free, with no signup. Tap "Ask GoDavaii AI about Chronic nephritic syndrome" above to get a personalised answer.

Source: ICD-10-CM 2025 (Centers for Medicare & Medicaid Services, public domain). Codes valid from October 1, 2024. CMS source ↗