N03: Chronic nephritic syndrome

Codes under N03 (Chronic nephritic syndrome). A ✓ marks a billable (fully specified) code; category codes without a ✓ are not billable on their own.

Code	Description	Billable
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	✓

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Informational only, not coding or medical advice. Verify against the official ICD-10-CM (FY2026) and your payer's guidelines.

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