N04.5 vs N04.A
N04.5 and N04.A can never be reported together. ICD-10-CM declares them mutually exclusive with an Excludes1 note, meaning the two conditions cannot occur in the same patient — so exactly one of them is correct for any given encounter.
N04.5
Nephrotic syndrome with diffuse mesangiocapillary glomerulonephritis
Billable
- Chapter 14
- Diseases of the genitourinary system
- Section
- N00-N08
Indexed under
- Nephrosis, nephrotic › with › hypocomplementemic (Epstein's) (syndrome) (congenital)
- Syndrome › nephrotic › with › diffuse › mesangiocapillary glomerulonephritis
N04.A
Nephrotic syndrome with C3 glomerulonephritis
Billable
- Chapter 14
- Diseases of the genitourinary system
- Section
- N00-N08
Use when the record says
- Nephrotic syndrome with C3 glomerulopathy
Indexed under
- Syndrome › nephrotic › with › C3 › glomerulonephritis
- Syndrome › nephrotic › with › C3 › glomerulopathy
Excludes1 is not always absolute: where two conditions covered by the note are genuinely unrelated, CMS guidance permits reporting both. Document the reasoning rather than assuming it. More on Excludes1 vs Excludes2 · FY2027