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ICD-10 Guide
ICD-10 CodesN05.2

N05.2

Billable

Unspecified nephritic syndrome with diffuse membranous glomerulonephritis

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

Code Description

ICD-10 N05.2 is a billable code used to indicate a diagnosis of unspecified nephritic syndrome with diffuse membranous glomerulonephritis.

Key Diagnostic Point:

Unspecified nephritic syndrome with diffuse membranous glomerulonephritis is characterized by the presence of nephritic syndrome symptoms, including hematuria, proteinuria, and hypertension, alongside the histological findings of diffuse membranous glomerulonephritis. This condition results from the immune-mediated damage to the glomerular capillary walls, leading to increased permeability and subsequent protein leakage into the urine. Patients typically present with edema, oliguria, and signs of renal impairment. Diagnosis is often confirmed through renal biopsy, which reveals diffuse thickening of the glomerular capillary walls due to subepithelial immune complex deposition. Management may involve corticosteroids, immunosuppressive agents, and supportive care, including blood pressure control and diuretics for edema. The prognosis varies, with some patients achieving remission while others may progress to chronic kidney disease.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Differentiating between nephritic and nephrotic syndromes
  • Understanding the histological findings of glomerulonephritis
  • Interpreting renal biopsy results accurately
  • Managing comorbid conditions that may complicate nephritic syndrome

Audit Risk Factors

  • Inadequate documentation of renal biopsy results
  • Failure to specify the type of nephritic syndrome
  • Misclassification of nephrotic syndrome as nephritic syndrome
  • Lack of supporting clinical evidence for diagnosis

Specialty Focus

Medical Specialties

Nephrology

Documentation Requirements

Detailed clinical notes on symptoms, laboratory findings, and renal biopsy results.

Common Clinical Scenarios

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

Billing Considerations

Ensure clear documentation of the type of glomerulonephritis and treatment plans.

Pathology

Documentation Requirements

Comprehensive reports on renal biopsy findings, including histological analysis.

Common Clinical Scenarios

Evaluation of renal biopsies for suspected glomerular diseases.

Billing Considerations

Accurate description of glomerular changes is crucial for proper coding.

Coding Guidelines

Inclusion Criteria

Use N05.2 When
  • According to ICD
  • 10 guidelines, N05
  • 2 should be used when the nephritic syndrome is unspecified but associated with diffuse membranous glomerulonephritis
  • Coders should ensure that documentation supports the diagnosis and that any related conditions are also coded appropriately

Exclusion Criteria

Do NOT use N05.2 When
No specific exclusions found.

Related ICD-10 Codes

Related CPT Codes

Renal biopsy CPT codeCPT Code

Renal biopsy

Clinical Scenario

When a renal biopsy is performed to confirm the diagnosis of nephritic syndrome.

Documentation Requirements

Documentation of indications for biopsy and results.

Specialty Considerations

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

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 diagnoses and treatment tracking. N05.2 provides a clear designation for unspecified nephritic syndrome with diffuse membranous glomerulonephritis, 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 diagnoses and treatment tracking. N05.2 provides a clear designation for unspecified nephritic syndrome with diffuse membranous glomerulonephritis, facilitating better patient management and research.

Reimbursement & Billing Impact

The transition to ICD-10 has allowed for more specific coding of nephritic syndromes, improving the accuracy of diagnoses and treatment tracking. N05.2 provides a clear designation for unspecified nephritic syndrome with diffuse membranous glomerulonephritis, facilitating better patient management and research.

Resources

Clinical References

  • •
    ICD-10-CM Official Guidelines for Coding and Reporting

Coding & Billing References

  • •
    ICD-10-CM Official Guidelines for Coding and Reporting

Frequently Asked Questions

What is the difference between nephritic syndrome and nephrotic syndrome?

Nephritic syndrome is characterized by hematuria, proteinuria, and hypertension, while nephrotic syndrome is defined by significant proteinuria, hypoalbuminemia, and edema without hematuria.