N01.0 ICD-10-CM Code: Rapidly progressive nephritic syndrome with minor glomerular abnormality
N01.0 is not a CMS-HCC payment code. MEAT criteria · RAF calculator status · free HCC coding tools
HCC Buddy Code Card
Digital ICD-10 code-book layout with official code detail, always-visible risk models, Code Trumping, and Buddy coding guidance.
FY 2026 Apr update / Diseases of the genitourinary system (N00-N99) / Glomerular diseases (N00-N08)
N01.0
Billable / SpecificICD-10-CMOfficial ICD-10-CMCodebook guidanceRapidly progressive nephritic syndrome with minor glomerular abnormality
A rapidly worsening kidney inflammation with minimal visible structural changes under the microscope, but with severe clinical symptoms and rapid loss of kidney function.
CMS-HCC V28
N/A—
Not mapped
CMS-HCC V24
N/A—
Not mapped
ACA/HHS
N/A—
Not mapped
ESRD/PACE
N/A—
Not mapped
RXHCC
N/A—
Not mapped
Code Book Path
Inclusion Terms
Official- Rapidly progressive nephritic syndrome with minimal change lesion
Excludes 2
OfficialICD-10-CM does not list Excludes 2 notes for N01.0 in this effective period.
Related Child Codes
Includes
Official- rapidly progressive glomerular disease
- rapidly progressive glomerulonephritis
- rapidly progressive nephritis
Excludes 1
Official- nephritic syndrome NOS (N05.-)
Code First
OfficialICD-10-CM does not list Code First sequencing instructions for N01.0 in this effective period.
Use Additional
OfficialICD-10-CM does not list Use Additional Code instructions for N01.0 in this effective period.
Code Also
OfficialICD-10-CM does not list Code Also instructions for N01.0 in this effective period.
Buddy Documentation Tip
Current with CMS: FY2026 ICD-10-CM Apr 1 update (effective Apr 1 – Sep 30, 2026) · CMS-HCC V28, 100% phased in for payment year 2026. FY2027 code set already staged for October 1, 2026. How HCC Buddy stays current →
Is N01.0 an HCC code?
No. N01.0 is a billable ICD-10-CM code but does not map to any HCC category in V28, V24, ESRD, or RxHCC.
- Code
- N01.0
- Description
- Rapidly progressive nephritic syndrome with minor glomerular abnormality
- HCC (V28)
- No CMS-HCC V28 mapping
- RAF reference coefficient
- —
- Billable
- Yes
- Payment year
- 2026
Coder workflow notes
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This code does not map to an HCC category in any model (V28, V24, ESRD, RxHCC).
What This Code Means
N01.0 is the ICD-10-CM diagnosis code for rapidly progressive nephritic syndrome with minor glomerular abnormality. A rapidly worsening kidney inflammation with minimal visible structural changes under the microscope, but with severe clinical symptoms and rapid loss of kidney function. N01.0 sits in the ICD-10-CM chapter for diseases of the genitourinary system (n00-n99), within the section covering glomerular diseases (n00-n08).
N01.0 is a billable ICD-10-CM code, but the current payload does not show a mapping under the CMS-HCC V28, V24, ESRD, or RxHCC models. Do not assign risk adjustment value from this page when no source-backed mapping is shown; verify the applicable model and payment year.
This diagnosis requires clinical evidence of rapid progression despite minimal biopsy findings.
HCC Buddy maintains structured V28 and V24 mapping, source-labeled coefficient references, and MEAT documentation criteria for N01.0 sourced directly from the CMS-HCC risk adjustment model files and the CMS ICD-10-CM code set.
Coding Tips
- •This diagnosis requires clinical evidence of rapid progression despite minimal biopsy findings
- •Often associated with ANCA-positive vasculitis; document serologic findings if available