N00: Acute nephritic syndrome

Codes under N00 (Acute nephritic syndrome). A ✓ marks a billable (fully specified) code; category codes without a ✓ are not billable on their own.

Code	Description	Billable
N00.0	Acute nephritic syndrome with minor glomerular abnormality	✓
N00.1	Acute nephritic syndrome with focal and segmental glomerular lesions	✓
N00.2	Acute nephritic syndrome with diffuse membranous glomerulonephritis	✓
N00.3	Acute nephritic syndrome with diffuse mesangial proliferative glomerulonephritis	✓
N00.4	Acute nephritic syndrome with diffuse endocapillary proliferative glomerulonephritis	✓
N00.5	Acute nephritic syndrome with diffuse mesangiocapillary glomerulonephritis	✓
N00.6	Acute nephritic syndrome with dense deposit disease	✓
N00.7	Acute nephritic syndrome with diffuse crescentic glomerulonephritis	✓
N00.8	Acute nephritic syndrome with other morphologic changes	✓
N00.9	Acute nephritic syndrome with unspecified morphologic changes	✓
N00.A	Acute nephritic syndrome with C3 glomerulonephritis	✓
N00.B	Acute nephritic syndrome with immune complex membranoproliferative glomerulonephritis	—
N00.B1	Acute nephritic syndrome with idiopathic immune membranoproliferative glomerulonephritis (IC-MPGN)	✓
N00.B2	Acute nephritic syndrome with secondary immune complex membranoproliferative glomerulonephritis (IC-MPGN)	✓

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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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