ICD-10 · PDGM grouping
N00 Acute nephritic syndrome
All 13 codes in the N00 family, with the PDGM clinical group, comorbidity subgroup and primary-position rule CMS assigns, read from the CMS grouper crosswalk v07.2.26 and the CDC FY2027 code file.
Codes in family
13
Can lead a claim
12
Cannot lead a claim
1
What CMS assigns to N00
12 of the 13 codes group to MMTA - Other (6) and MMTA - Gastrointestinal tract and Genitourinary system (6); 1 is assigned no clinical group. None of the 13 is assigned a comorbidity subgroup. 12 of the 13 can lead a claim.
Every code in N00
Descriptions are CDC’s FY2027 wording; where CMS’s grouper abbreviates one, its form is shown beneath.
| Code | Description | Primary position | Clinical group | Comorbidity subgroup |
|---|---|---|---|---|
| N00.0 | Acute nephritic syndrome with minor glomerular abnormality | Can lead a claim | A | None |
| N00.1 | Acute nephritic syndrome with focal and segmental glomerular lesionsCMS: Acute neph syndrome w focal and segmental glomerular lesions | Can lead a claim | A | None |
| N00.2 | Acute nephritic syndrome with diffuse membranous glomerulonephritisCMS: Acute nephritic syndrome w diffuse membranous glomrlneph | Can lead a claim | A | None |
| N00.3 | Acute nephritic syndrome with diffuse mesangial proliferative glomerulonephritisCMS: Acute neph syndrome w diffuse mesangial prolif glomrlneph | Can lead a claim | J | None |
| N00.4 | Acute nephritic syndrome with diffuse endocapillary proliferative glomerulonephritisCMS: Acute neph syndrome w diffuse endocaplry prolif glomrlneph | Can lead a claim | A | None |
| N00.5 | Acute nephritic syndrome with diffuse mesangiocapillary glomerulonephritisCMS: Acute nephritic syndrome w diffuse mesangiocap glomrlneph | Can lead a claim | A | None |
| N00.6 | Acute nephritic syndrome with dense deposit disease | Can lead a claim | A | None |
| N00.7 | Acute nephritic syndrome with diffuse crescentic glomerulonephritisCMS: Acute nephritic syndrome w diffuse crescentic glomrlneph | Can lead a claim | J | None |
| N00.8 | Acute nephritic syndrome with other morphologic changes | Can lead a claim | J | None |
| N00.9 | Acute nephritic syndrome with unspecified morphologic changesCMS: Acute nephritic syndrome with unsp morphologic changes | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| N00.A | Acute nephritic syndrome with C3 glomerulonephritis | Can lead a claim | J | None |
| N00.B Acute nephritic syndrome with immune complex membranoproliferative glomerulonephritis | ||||
| N00.B1 | Acute nephritic syndrome with idiopathic immune membranoproliferative glomerulonephritis (IC-MPGN)CMS: Ac neph synd with idio imm membr prolif glomrlneph (IC-MPGN) | Can lead a claim | J | None |
| N00.B2 | Acute nephritic syndrome with secondary immune complex membranoproliferative glomerulonephritis (IC-MPGN)CMS: Ac nep syn w sec imm cmplx membr prolif glomrlneph (IC-MPGN) | Can lead a claim | J | None |
Sources: CMS HH PPS Grouper Software v07.2.26, effective 2026-10-01, for the clinical group, comorbidity subgroup, code-first conventions and primary-position flags; CDC NCHS ICD-10-CM FY2027 code descriptions for the family title and code wording. This is the crosswalk Medicare runs a claim through. Grouping also depends on admission source, timing, the OASIS functional items and the rest of the diagnosis list.
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