N03 vs N05.8
N03 (Chronic nephritic syndrome) compared with N05.8 (Unspecified nephritic syndrome with other morphologic changes), from the official CMS tabular data. Do not report these codes together: the official tabular list marks them Excludes1.
Can these codes be reported together?
No — do not report together. N03 carries an Excludes1 note covering N05.8: “diffuse sclerosing glomerulonephritis (N05.8-)”
Sole exception: when the two conditions are documented as unrelated to each other (ICD-10-CM Official Guidelines, Section I.A.12.a).
No — do not report together. N03 carries an Excludes1 note covering N05.8: “nephritic syndrome NOS (N05.-)”
Sole exception: when the two conditions are documented as unrelated to each other (ICD-10-CM Official Guidelines, Section I.A.12.a).
Side by side
| N03Chronic nephritic syndrome | N05.8Unspecified nephritic syndrome with other morphologic changes | |
|---|---|---|
| Billing status | Non-billable header | Billable |
| Classification | N00-N99 — Diseases of the Genitourinary System (N00-N99) | N00-N99 — Diseases of the Genitourinary System (N00-N99) |
| Definition | Chronic nephritic syndrome is a non-billable ICD-10-CM category code (N03). | Unspecified nephritic syndrome with other morphologic changes is a billable ICD-10-CM diagnosis code (N05.8). |
| Includes | chronic glomerular disease chronic glomerulonephritis chronic nephritis | glomerular disease NOS glomerulonephritis NOS nephritis NOS nephropathy NOS and renal disease NOS with morphological lesion specified in .0-.8 |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources