N05.1 – Unspecified nephritic syndrome with focal and segmental glomerular lesions

ICD-10-CM 2027 diagnosis code · Glomerular diseases

Billable code

ICD-10-CM code N05.1
Code
N05.1 (claims format: N051)
Description
Unspecified nephritic syndrome with focal and segmental glomerular lesions
Short description
Unsp neph syndrome w focal and segmental glomerular lesions
Billable
Yes – valid for HIPAA-covered transactions
Valid for
Dates of service October 1, 2026 – September 30, 2027 (FY2027)
Chapter
14. Diseases of the genitourinary system (N00-N99)
Block
N00-N08 Glomerular diseases
Parent codes
N05

Notes for N05.1

Applicable to:
  • Unspecified nephritic syndrome with focal and segmental hyalinosis
  • Unspecified nephritic syndrome with focal and segmental sclerosis
  • Unspecified nephritic syndrome with focal glomerulonephritis

Notes inherited from parent codes

Instructional notes at a category or block level apply to every code below it.

N05 – Unspecified nephritic syndrome

Includes:
  • glomerular disease NOS
  • glomerulonephritis NOS
  • nephritis NOS
  • nephropathy NOS and renal disease NOS with morphological lesion specified in .0-.8
Excludes1 (not coded here):
  • nephropathy NOS with no stated morphological lesion (N28.9)
  • renal disease NOS with no stated morphological lesion (N28.9)
  • tubulo-interstitial nephritis NOS (N12)

Block N00-N08

Excludes1 (not coded here):
  • hypertensive chronic kidney disease (I12.-)
Code also:
  • any associated kidney failure (N17-N19).

Index terms for N05.1

Entries in the ICD-10-CM alphabetic index that lead to this code:

Related codes in N05

Frequently asked questions

What is ICD-10 code N05.1?

N05.1 is the ICD-10-CM code for unspecified nephritic syndrome with focal and segmental glomerular lesions, in the block N00-N08 (Glomerular diseases).

Is N05.1 a billable code?

Yes. N05.1 is a billable/specific code that can be used to indicate a diagnosis for reimbursement purposes.

What category does N05.1 belong to?

It belongs to category N05 – Unspecified nephritic syndrome.

Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.