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N05 ⚠ Non-billable

Unspecified nephritic syndrome

ICD-10-CM · FY2026 · Diseases of the Genitourinary System

Code
N05
System
ICD-10-CM
Billable
No — use specific code
Effective
FY2026
Chapter
Diseases of the Genitourinary System
Source
CMS / CDC NCHS
⚠ Verify before billing. Confirm against the current CMS/NCHS ICD-10-CM files and your payer's rules before claims submission.

Official coding notes

From CMS's ICD-10-CM Tabular List.

Includes
  • glomerular disease NOS
  • glomerulonephritis NOS
  • nephritis NOS
  • nephropathy NOS and renal disease NOS with morphological lesion specified in .0-.8
Excludes1 — never code together
  • nephropathy NOS with no stated morphological lesion (N28.9)
  • renal disease NOS with no stated morphological lesion (N28.9)
  • tubulo-interstitial nephritis NOS (N12)

Frequently asked questions

What is ICD-10 code N05?
ICD-10-CM code N05 represents Unspecified nephritic syndrome. It is a non-billable header code requiring a more specific subcategory in the Diseases of the Genitourinary System chapter, effective October 1, 2025 – September 30, 2026.
Is N05 billable?
No. N05 is a non-billable header. Select a more specific subcategory for claims submission.
What chapter is N05 in?
N05 belongs to the Diseases of the Genitourinary System chapter (N00–N99) of ICD-10-CM.

Related codes in the N05 category

N05.0 Unspecified nephritic syndrome with minor glomerular abnormality Billable N05.1 Unspecified nephritic syndrome with focal and segmental glomerular lesions Billable N05.2 Unspecified nephritic syndrome with diffuse membranous glomerulonephritis Billable N05.3 Unspecified nephritic syndrome with diffuse mesangial proliferative glomerulonephritis Billable N05.4 Unspecified nephritic syndrome with diffuse endocapillary proliferative glomerulonephritis Billable N05.5 Unspecified nephritic syndrome with diffuse mesangiocapillary glomerulonephritis Billable N05.6 Unspecified nephritic syndrome with dense deposit disease Billable N05.7 Unspecified nephritic syndrome with diffuse crescentic glomerulonephritis Billable

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