N04: Nephrotic syndrome
Codes under N04 (Nephrotic syndrome). A ✓ marks a billable (fully specified) code; category codes without a ✓ are not billable on their own.
| Code | Description | Billable |
|---|---|---|
| N04.0 | Nephrotic syndrome with minor glomerular abnormality | ✓ |
| N04.0 | Nephrotic syndrome with minor glomerular abnormality | ✓ |
| N04.1 | Nephrotic syndrome with focal and segmental glomerular lesions | ✓ |
| N04.1 | Nephrotic syndrome with focal and segmental glomerular lesions | ✓ |
| N04.2 | Nephrotic syndrome with diffuse membranous glomerulonephritis | — |
| N04.2 | Nephrotic syndrome with diffuse membranous glomerulonephritis | — |
| N04.3 | Nephrotic syndrome with diffuse mesangial proliferative glomerulonephritis | ✓ |
| N04.3 | Nephrotic syndrome with diffuse mesangial proliferative glomerulonephritis | ✓ |
| N04.4 | Nephrotic syndrome with diffuse endocapillary proliferative glomerulonephritis | ✓ |
| N04.4 | Nephrotic syndrome with diffuse endocapillary proliferative glomerulonephritis | ✓ |
| N04.5 | Nephrotic syndrome with diffuse mesangiocapillary glomerulonephritis | ✓ |
| N04.5 | Nephrotic syndrome with diffuse mesangiocapillary glomerulonephritis | ✓ |
| N04.6 | Nephrotic syndrome with dense deposit disease | ✓ |
| N04.6 | Nephrotic syndrome with dense deposit disease | ✓ |
| N04.7 | Nephrotic syndrome with diffuse crescentic glomerulonephritis | ✓ |
| N04.7 | Nephrotic syndrome with diffuse crescentic glomerulonephritis | ✓ |
| N04.8 | Nephrotic syndrome with other morphologic changes | ✓ |
| N04.8 | Nephrotic syndrome with other morphologic changes | ✓ |
| N04.9 | Nephrotic syndrome with unspecified morphologic changes | ✓ |
| N04.9 | Nephrotic syndrome with unspecified morphologic changes | ✓ |
| N04.20 | Nephrotic syndrome with diffuse membranous glomerulonephritis, unspecified | ✓ |
| N04.20 | Nephrotic syndrome with diffuse membranous glomerulonephritis, unspecified | ✓ |
| N04.21 | Primary membranous nephropathy with nephrotic syndrome | ✓ |
| N04.21 | Primary membranous nephropathy with nephrotic syndrome | ✓ |
| N04.22 | Secondary membranous nephropathy with nephrotic syndrome | ✓ |
| N04.22 | Secondary membranous nephropathy with nephrotic syndrome | ✓ |
| N04.29 | Other nephrotic syndrome with diffuse membranous glomerulonephritis | ✓ |
| N04.29 | Other nephrotic syndrome with diffuse membranous glomerulonephritis | ✓ |
| N04.A | Nephrotic syndrome with C3 glomerulonephritis | ✓ |
| N04.A | Nephrotic syndrome with C3 glomerulonephritis | ✓ |
| N04.B | Nephrotic syndrome with immune complex membranoproliferative glomerulonephritis (IC-MPGN) | — |
| N04.B | Nephrotic syndrome with immune complex membranoproliferative glomerulonephritis (IC-MPGN) | — |
| N04.B1 | Nephrotic syndrome with idiopathic immune complex membranoproliferative glomerulonephritis (IC-MPGN) | ✓ |
| N04.B1 | Nephrotic syndrome with idiopathic immune complex membranoproliferative glomerulonephritis (IC-MPGN) | ✓ |
| N04.B2 | Nephrotic syndrome with secondary immune complex membranoproliferative glomerulonephritis (IC-MPGN) | ✓ |
| N04.B2 | Nephrotic syndrome with secondary immune complex membranoproliferative glomerulonephritis (IC-MPGN) | ✓ |
Frequently asked questions
What is ICD-10-CM code N04?
N04 is an ICD-10-CM category covering Nephrotic syndrome. It contains 36 more specific diagnosis codes, 32 of which are billable.
Is N04 a billable code?
No — N04 is a category header and isn't billable on its own. Code to the highest level of specificity using one of its subcodes (for example N04.0 — Nephrotic syndrome with minor glomerular abnormality). 32 of the 36 codes under N04 are billable.
What codes fall under N04?
N04 includes N04.0, N04.0, N04.1, N04.1, N04.2, plus 31 more. See the full list with descriptions and billable status above.
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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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