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ICD-10 Guide
ICD-10 CodesN05.8

N05.8

Billable

Unspecified nephritic syndrome with other morphologic changes

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

Code Description

ICD-10 N05.8 is a billable code used to indicate a diagnosis of unspecified nephritic syndrome with other morphologic changes.

Key Diagnostic Point:

Unspecified nephritic syndrome with other morphologic changes refers to a group of kidney disorders characterized by inflammation of the glomeruli, leading to a range of clinical manifestations. Patients typically present with symptoms such as hematuria (blood in urine), proteinuria (excess protein in urine), and edema. The nephritic syndrome can arise from various underlying causes, including infections, autoimmune diseases, and systemic conditions. Renal biopsy findings may reveal glomerular inflammation, changes in glomerular structure, and other morphologic alterations that are not specifically categorized. The management of nephritic syndrome often involves addressing the underlying cause, controlling blood pressure, and managing fluid overload. Corticosteroids and immunosuppressive agents may be indicated in certain cases. Accurate diagnosis and coding are essential for appropriate treatment and reimbursement.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Variety of underlying causes leading to nephritic syndrome
  • Need for renal biopsy interpretation
  • Differentiation from nephrotic syndrome
  • Variability in clinical presentation

Audit Risk Factors

  • Inadequate documentation of clinical findings
  • Failure to specify underlying causes
  • Misinterpretation of renal biopsy results
  • Inconsistent coding of related conditions

Specialty Focus

Medical Specialties

Nephrology

Documentation Requirements

Detailed clinical notes including symptoms, lab results, and biopsy findings.

Common Clinical Scenarios

Patients presenting with hematuria and proteinuria, requiring renal biopsy.

Billing Considerations

Ensure clear documentation of the morphologic changes observed in biopsy.

Internal Medicine

Documentation Requirements

Comprehensive patient history and physical examination findings.

Common Clinical Scenarios

Management of patients with suspected nephritic syndrome and systemic symptoms.

Billing Considerations

Document any systemic conditions that may contribute to nephritic syndrome.

Coding Guidelines

Inclusion Criteria

Use N05.8 When
  • Follow official ICD
  • 10 coding guidelines, ensuring that the code is used when the specific cause of nephritic syndrome is not documented
  • Include relevant clinical findings and any associated conditions

Exclusion Criteria

Do NOT use N05.8 When
No specific exclusions found.

Related ICD-10 Codes

Related CPT Codes

88172CPT Code

Renal biopsy, percutaneous

Clinical Scenario

Used when a renal biopsy is performed to determine the cause of nephritic syndrome.

Documentation Requirements

Document indication for biopsy, consent, and findings.

Specialty Considerations

Nephrology specialists should ensure comprehensive documentation of the biopsy results.

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 ability to capture the complexity of these conditions and their management.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of nephritic syndromes, improving the ability to capture the complexity of these conditions and their management.

Reimbursement & Billing Impact

The transition to ICD-10 has allowed for more specific coding of nephritic syndromes, improving the ability to capture the complexity of these conditions and their management.

Resources

Clinical References

  • •
    Kidney Disease: Improving Global Outcomes (KDIGO)

Coding & Billing References

  • •
    Kidney Disease: Improving Global Outcomes (KDIGO)

Frequently Asked Questions

What is the difference between nephritic syndrome and nephrotic syndrome?

Nephritic syndrome is characterized by hematuria, hypertension, and mild proteinuria, while nephrotic syndrome is defined by significant proteinuria, hypoalbuminemia, and edema.