ICD-10-CM N03: Chronic nephritic syndrome

ICD-10-CM Diagnosis Code (2025)

Official Description for N03

Chronic nephritic syndrome

Coding Notes & Guidelines for N03

Includes Notes
  • chronic glomerular disease
  • chronic glomerulonephritis
  • chronic nephritis
Excludes1: Not Coded Here
  • chronic tubulo-interstitial nephritis (N11.-)
  • diffuse sclerosing glomerulonephritis (N05.8-)
  • nephritic syndrome NOS (N05.-)
Excludes1: Not Coded Here
  • Chronic nephritic syndrome with C3 glomerulonephritis (N03.A)
  • Chronic nephritic syndrome with C3 glomerulopathy (N03.A)
Excludes1: Not Coded Here

Chronic nephritic syndrome (with C3 glomerulopathy) with dense deposit disease (N03.6)

Inclusion Terms

Chronic nephritic syndrome with minimal change lesion

Inclusion Terms
  • Chronic nephritic syndrome with focal and segmental hyalinosis
  • Chronic nephritic syndrome with focal and segmental sclerosis
  • Chronic nephritic syndrome with focal glomerulonephritis
Inclusion Terms

Chronic nephritic syndrome with membranoproliferative glomerulonephritis, types 1 and 3, or NOS

Inclusion Terms
  • Chronic nephritic syndrome with C3 glomerulopathy with dense deposit disease
  • Chronic nephritic syndrome with membranoproliferative glomerulonephritis, type 2
Inclusion Terms

Chronic nephritic syndrome with extracapillary glomerulonephritis

Inclusion Terms

Chronic nephritic syndrome with proliferative glomerulonephritis NOS

Inclusion Terms

Chronic nephritic syndrome with C3 glomerulopathy

Child Codes (More Specific Codes for N03):

N03.0 - Chronic nephritic syndrome with minor glomerular abnormality N03.1 - Chronic nephritic syndrome with focal and segmental glomerular lesions N03.2 - Chronic nephritic syndrome with diffuse membranous glomerulonephritis N03.3 - Chronic nephritic syndrome with diffuse mesangial proliferative glomerulonephritis N03.4 - Chronic nephritic syndrome with diffuse endocapillary proliferative glomerulonephritis N03.5 - Chronic nephritic syndrome with diffuse mesangiocapillary glomerulonephritis N03.6 - Chronic nephritic syndrome with dense deposit disease N03.7 - Chronic nephritic syndrome with diffuse crescentic glomerulonephritis N03.8 - Chronic nephritic syndrome with other morphologic changes N03.9 - Chronic nephritic syndrome with unspecified morphologic changes N03.A - Chronic nephritic syndrome with C3 glomerulonephritis

About ICD-10-CM Code N03 (Chronic nephritic syndrome)

ICD-10-CM code N03 is a billable or specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes. The 2025 edition of ICD-10-CM N03 became effective on October 1, 2024.

This page provides detailed information about N03 - Chronic nephritic syndrome. It includes common terminology, coding guidelines such as "Includes," "Excludes1," and "Excludes2" notes, and information on required 7th characters. Utilizing this information correctly is essential for accurate medical coding and claims submission for conditions like Chronic nephritic syndrome.