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ICD-10 Guide
ICD-10 CodesN03.6

N03.6

Billable

Chronic nephritic syndrome with dense deposit disease

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

Code Description

ICD-10 N03.6 is a billable code used to indicate a diagnosis of chronic nephritic syndrome with dense deposit disease.

Key Diagnostic Point:

Chronic nephritic syndrome with dense deposit disease is a specific form of glomerulonephritis characterized by the presence of dense deposits in the glomerular basement membrane. This condition is often associated with significant proteinuria, hematuria, and hypertension. Patients may present with symptoms of nephrotic syndrome, including edema and foamy urine due to high levels of protein loss. The pathophysiology involves the deposition of complement component C3 and immunoglobulin in the kidney, leading to inflammation and damage to the glomeruli. Renal biopsy findings typically reveal a characteristic pattern of dense deposits and may show a membranoproliferative glomerulonephritis pattern. Management of this condition often requires a multidisciplinary approach, including nephrology for monitoring renal function, managing hypertension, and addressing proteinuria, which may involve the use of angiotensin-converting enzyme (ACE) inhibitors or corticosteroids. Regular follow-up is essential to monitor for progression to end-stage renal disease.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Requires understanding of nephritic vs. nephrotic syndrome
  • Differentiation from other types of glomerulonephritis
  • Need for accurate documentation of renal biopsy findings
  • Management of associated conditions like hypertension

Audit Risk Factors

  • Inadequate documentation of renal biopsy results
  • Failure to specify the type of nephritic syndrome
  • Misclassification of nephrotic syndrome symptoms
  • Lack of follow-up documentation on management and outcomes

Specialty Focus

Medical Specialties

Nephrology

Documentation Requirements

Detailed clinical notes on renal function, laboratory results, and treatment plans.

Common Clinical Scenarios

Management of chronic kidney disease, monitoring of proteinuria, and treatment of hypertension.

Billing Considerations

Ensure accurate coding of all associated conditions and regular updates on patient status.

Pathology

Documentation Requirements

Comprehensive reports on renal biopsy findings, including histological analysis.

Common Clinical Scenarios

Evaluation of renal biopsies for glomerular diseases.

Billing Considerations

Pathology reports must clearly indicate the presence of dense deposits and any other relevant findings.

Coding Guidelines

Inclusion Criteria

Use N03.6 When
  • Follow official ICD
  • 10 coding guidelines, ensuring accurate documentation of the condition's chronicity and associated symptoms
  • Include specific details from renal biopsies and laboratory results to support the diagnosis

Exclusion Criteria

Do NOT use N03.6 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

Pathology report detailing findings and indication for biopsy.

Specialty Considerations

Nephrologists must ensure that the biopsy is justified based on clinical presentation.

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

The transition to ICD-10 has allowed for more specific coding of chronic nephritic syndromes, improving the accuracy of data collection and reimbursement processes.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of chronic nephritic syndromes, improving the accuracy of data collection and reimbursement processes.

Reimbursement & Billing Impact

reimbursement processes.

Resources

Clinical References

  • •
    Kidney Disease: Improving Global Outcomes (KDIGO)

Coding & Billing References

  • •
    Kidney Disease: Improving Global Outcomes (KDIGO)

Frequently Asked Questions

What is the significance of dense deposit disease in nephritic syndrome?

Dense deposit disease is a specific type of chronic nephritic syndrome that indicates a unique pathophysiological process involving complement dysregulation, leading to distinct clinical and histological features.