ICD-10-CM diagnosis code
N00.A Acute nephritic syndrome with C3 glomerulonephritis
- Billable
- Yes, a complete code (FY2026)
- Category
- N00 Acute nephritic syndrome
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Other codes in N00
13 complete codes in this category.
- N00.1Acute nephritic syndrome with focal and segmental glomerular lesions
- N00.2Acute nephritic syndrome with diffuse membranous glomerulonephritis
- N00.3Acute nephritic syndrome with diffuse mesangial proliferative glomerulonephritis
- N00.4Acute nephritic syndrome with diffuse endocapillary proliferative glomerulonephritis
- N00.5Acute nephritic syndrome with diffuse mesangiocapillary glomerulonephritis
- N00.6Acute nephritic syndrome with dense deposit disease
- N00.7Acute nephritic syndrome with diffuse crescentic glomerulonephritis
- N00.8Acute nephritic syndrome with other morphologic changes
- N00.9Acute nephritic syndrome with unspecified morphologic changes
- N00.AAcute nephritic syndrome with C3 glomerulonephritis
- N00.B1Acute nephritic syndrome with idiopathic immune membranoproliferative glomerulonephritis (IC-MPGN)
- N00.B2Acute nephritic syndrome with secondary immune complex membranoproliferative glomerulonephritis (IC-MPGN)
Documentation tips
- Make sure the note supports every element of the title, “Acute nephritic syndrome with C3 glomerulonephritis”: each detail in it should be traceable to the history, examination or assessment.
- Code to the highest specificity the documentation supports. If a detail is missing from the note, add it to the note rather than choosing a less specific code by default.
- Check the Tabular List and official guidelines for instructional notes (“code first”, “use additional code”, Excludes1/Excludes2) that apply to N00.
The international WHO ICD-10 also has N00, with its inclusion and exclusion notes; titles and detail can differ from ICD-10-CM.
ICD-10-CM is developed by the National Center for Health Statistics (NCHS), Centers for Disease Control and Prevention, U.S. Department of Health and Human Services, and is based on the WHO ICD-10. Codes and titles are reproduced unchanged from the FY2026 code list (effective 1 October 2025). Their use here does not imply endorsement by CDC, HHS or the U.S. Government. Changes effective on or after 1 October 2026 may not be reflected yet; check the current release at cdc.gov or cms.gov before submitting claims.
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