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ICD-10 Guide
ICD-10 CodesN03.2

N03.2

Billable

Chronic nephritic syndrome with diffuse membranous glomerulonephritis

BILLABLE STATUSYes
IMPLEMENTATION DATEOctober 1, 2015
LAST UPDATED09/18/2025

Code Description

ICD-10 N03.2 is a billable code used to indicate a diagnosis of chronic nephritic syndrome with diffuse membranous glomerulonephritis.

Key Diagnostic Point:

Chronic nephritic syndrome with diffuse membranous glomerulonephritis is characterized by persistent inflammation of the glomeruli, leading to significant proteinuria, hematuria, and hypertension. This condition is often a result of immune-mediated damage to the glomerular membrane, which becomes thickened due to the deposition of immune complexes. Patients typically present with symptoms such as edema, fatigue, and foamy urine due to high levels of protein loss. Renal biopsy findings often reveal diffuse thickening of the glomerular capillary walls, with subepithelial immune complex deposits visible under electron microscopy. Management of this condition involves addressing the underlying cause, controlling blood pressure, and managing proteinuria, often with the use of corticosteroids or immunosuppressive agents. Regular monitoring of renal function and laboratory parameters is essential to assess disease progression and treatment efficacy.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Differentiation between nephritic and nephrotic syndromes
  • Need for precise documentation of renal biopsy findings
  • Variability in clinical presentation among patients
  • Potential overlap with other glomerular diseases

Audit Risk Factors

  • Inadequate documentation of renal biopsy results
  • Failure to specify the type of nephritic syndrome
  • Misclassification of acute vs. chronic conditions
  • Lack of follow-up documentation on treatment response

Specialty Focus

Medical Specialties

Nephrology

Documentation Requirements

Detailed clinical notes on symptoms, lab results, and treatment plans are essential.

Common Clinical Scenarios

Patients presenting with edema, hypertension, and abnormal urinalysis findings.

Billing Considerations

Ensure accurate documentation of renal function tests and biopsy results to support coding.

Pathology

Documentation Requirements

Pathology reports must clearly describe biopsy findings and any immunofluorescence studies performed.

Common Clinical Scenarios

Biopsy evaluations for patients with suspected glomerulonephritis.

Billing Considerations

Pathology findings should correlate with clinical symptoms for accurate coding.

Coding Guidelines

Inclusion Criteria

Use N03.2 When
  • According to ICD
  • 10 coding guidelines, N03
  • 2 should be used when there is clear documentation of chronic nephritic syndrome with diffuse membranous glomerulonephritis
  • Coders should ensure that the diagnosis is supported by clinical findings and laboratory results, including urinalysis and renal biopsy

Exclusion Criteria

Do NOT use N03.2 When
No specific exclusions found.

Related ICD-10 Codes

Related CPT Codes

Renal biopsy CPT codeCPT Code

Renal biopsy

Clinical Scenario

Used when a renal biopsy is performed to confirm diagnosis.

Documentation Requirements

Document indication for biopsy, consent, and findings.

Specialty Considerations

Nephrologists must ensure that the biopsy results correlate with clinical findings.

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

The transition to ICD-10 has allowed for more specific coding of nephritic syndromes, improving the accuracy of data collection and reimbursement processes. N03.2 provides a clear distinction from other nephritic conditions, facilitating better patient management and research.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of nephritic syndromes, improving the accuracy of data collection and reimbursement processes. N03.2 provides a clear distinction from other nephritic conditions, facilitating better patient management and research.

Reimbursement & Billing Impact

reimbursement processes. N03.2 provides a clear distinction from other nephritic conditions, facilitating better patient management and research.

Resources

Clinical References

  • •
    American Academy of Nephrology
  • •
    ICD-10-CM Official Guidelines for Coding and Reporting

Coding & Billing References

  • •
    American Academy of Nephrology
  • •
    ICD-10-CM Official Guidelines for Coding and Reporting

Frequently Asked Questions

What are the key symptoms of chronic nephritic syndrome?

Key symptoms include persistent proteinuria, hematuria, edema, and hypertension. Patients may also experience fatigue and foamy urine due to high protein levels.

How is chronic nephritic syndrome diagnosed?

Diagnosis is typically made through a combination of clinical evaluation, urinalysis showing proteinuria and hematuria, and renal biopsy to confirm the presence of diffuse membranous glomerulonephritis.