N00
ICD-10Non-billable categoryAcute nephritic syndrome
Official ICD-10-CM descriptor (FY2026)
Acute nephritic syndrome
N00 is a category heading, not a billable code. CMS does not accept it on a claim; report one of the more specific codes beneath it.
Includes
- acute glomerular disease
- acute glomerulonephritis
- acute nephritis
Excludes1
Not coded here. An Excludes1 code should never be reported at the same time as the code above it.
- acute tubulo-interstitial nephritis (N10)
- nephritic syndrome NOS (N05.-)
More specific codes under N00
- N00.0Acute nephritic syndrome with minor glomerular abnormality
- N00.1Acute neph syndrome w focal and segmental glomerular lesions
- N00.2Acute nephritic syndrome w diffuse membranous glomrlneph
- N00.3Acute neph syndrome w diffuse mesangial prolif glomrlneph
- N00.4Acute neph syndrome w diffuse endocaplry prolif glomrlneph
- N00.5Acute nephritic syndrome w diffuse mesangiocap glomrlneph
- N00.6Acute nephritic syndrome with dense deposit disease
- N00.7Acute nephritic syndrome w diffuse crescentic glomrlneph
- N00.8Acute nephritic syndrome with other morphologic changes
- N00.9Acute nephritic syndrome with unsp morphologic changes
- N00.AAcute nephritic syndrome with C3 glomerulonephritis
- N00.BAcute neph synd with immune complex membr prolif glomrlnephcategory
Where this code sits
Krasyn AI Coder
Get code suggestions automatically as you type notes. Free for 50 analyses.
Install for Chrome — freeSource
ICD-10-CM FY2026. Centers for Medicare & Medicaid Services (CMS) / National Center for Health Statistics (NCHS), “2026 ICD-10-CM Code Descriptions in Tabular Order” (icd10cm_order_2026.txt). Download the original file from cms.gov. Public domain (US Government work). Descriptors, billable flags and instructional notes on this page are reproduced from that file without modification. Krasyn adds no clinical guidance.