N01.5 vs N01.A
N01.5 (Rapidly progressive nephritic syndrome with diffuse mesangiocapillary glomerulonephritis) compared with N01.A (Rapidly progressive nephritic syndrome with C3 glomerulonephritis), 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. N01.5 carries an Excludes1 note covering N01.A: “Rapidly progressive nephritic syndrome with C3 glomerulonephritis (N01.A)”
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. N01.5 carries an Excludes1 note covering N01.A: “Rapidly progressive nephritic syndrome with C3 glomerulopathy (N01.A)”
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
| N01.5Rapidly progressive nephritic syndrome with diffuse mesangiocapillary glomerulonephritis | N01.ARapidly progressive nephritic syndrome with C3 glomerulonephritis | |
|---|---|---|
| Billing status | Billable | Billable |
| Classification | N00-N99 — Diseases of the Genitourinary System (N00-N99) | N00-N99 — Diseases of the Genitourinary System (N00-N99) |
| Definition | Rapidly progressive nephritic syndrome with diffuse mesangiocapillary glomerulonephritis is a billable ICD-10-CM diagnosis code (N01.5). | Rapidly progressive nephritic syndrome with C3 glomerulonephritis is a billable ICD-10-CM diagnosis code (N01.A). |
| Includes | rapidly progressive glomerular disease rapidly progressive glomerulonephritis rapidly progressive nephritis Rapidly progressive nephritic syndrome with membranoproliferative glomerulonephritis, types 1 and 3, or NOS | rapidly progressive glomerular disease rapidly progressive glomerulonephritis rapidly progressive nephritis Rapidly progressive nephritic syndrome with C3 glomerulopathy, NOS |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources