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ICD-10 Guide
ICD-10 CodesJ84.113

J84.113

Idiopathic non-specific interstitial pneumonitis

BILLABLE STATUSYes
IMPLEMENTATION DATEOctober 1, 2015
LAST UPDATED09/06/2025

Code Description

ICD-10 J84.113 is a billable code used to indicate a diagnosis of idiopathic non-specific interstitial pneumonitis.

Key Diagnostic Point:

Idiopathic non-specific interstitial pneumonitis (NSIP) is a form of interstitial lung disease characterized by inflammation and fibrosis of the lung interstitium. Clinically, patients often present with progressive dyspnea, cough, and fatigue, which can lead to significant impairment in quality of life. The disease primarily affects the alveolar walls and surrounding tissues, leading to scarring that impairs gas exchange. The etiology remains unknown, hence the term 'idiopathic.' Disease progression can vary, with some patients experiencing a gradual decline in lung function, while others may have a more rapid deterioration. Diagnostic considerations include high-resolution computed tomography (HRCT) scans, which typically reveal ground-glass opacities and reticular patterns, and lung biopsy may be necessary to confirm the diagnosis and rule out other interstitial lung diseases. Pulmonary function tests often show a restrictive pattern, and the absence of identifiable causes such as autoimmune diseases, drug toxicity, or environmental exposures is crucial for establishing the diagnosis of idiopathic NSIP.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Diagnostic complexity: Requires exclusion of other interstitial lung diseases and may involve advanced imaging and biopsy.
  • Treatment complexity: Management may include corticosteroids and immunosuppressive agents, necessitating careful monitoring.
  • Documentation requirements: Detailed clinical history and imaging findings are essential for accurate coding.
  • Coding specificity: Requires precise documentation to differentiate from other types of interstitial pneumonia.

Audit Risk Factors

  • Common coding errors: Misclassification with other interstitial lung diseases.
  • Documentation gaps: Incomplete clinical history or imaging reports.
  • Billing challenges: Potential denials due to lack of specificity in documentation.

Specialty Focus

Medical Specialties

Pulmonology

Documentation Requirements

Standard ICD-10-CM documentation requirements apply

Common Clinical Scenarios

Various clinical presentations within this specialty area

Billing Considerations

Follow specialty-specific billing guidelines

Rheumatology

Documentation Requirements

Standard ICD-10-CM documentation requirements apply

Common Clinical Scenarios

Various clinical presentations within this specialty area

Billing Considerations

Follow specialty-specific billing guidelines

Related CPT Codes

CPT Code

Clinical Scenario

Documentation Requirements

CPT Code

Clinical Scenario

Documentation Requirements

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

Idiopathic non-specific interstitial pneumonitis has significant clinical implications, as it can lead to progressive respiratory failure and decreased quality of life for affected individuals. The condition impacts population health by contributing to the burden of chronic respiratory diseases, necessitating healthcare resources for management and treatment. Understanding the epidemiology of NSIP is crucial for developing effective quality measures and improving healthcare utilization patterns.

ICD-9 vs ICD-10

Idiopathic non-specific interstitial pneumonitis has significant clinical implications, as it can lead to progressive respiratory failure and decreased quality of life for affected individuals. The condition impacts population health by contributing to the burden of chronic respiratory diseases, necessitating healthcare resources for management and treatment. Understanding the epidemiology of NSIP is crucial for developing effective quality measures and improving healthcare utilization patterns.

Reimbursement & Billing Impact

Reimbursement considerations include the necessity of demonstrating the idiopathic nature of the condition and any associated treatments, such as corticosteroid therapy. Common denials may arise from insufficient documentation or failure to provide evidence of ruling out other interstitial lung diseases. Best practices include maintaining comprehensive clinical notes, imaging reports, and treatment plans to ensure accurate coding and billing.

Resources

Clinical References

  • •
    ICD-10 Official Guidelines for J00-J99
  • •
    Clinical Documentation Requirements

Coding & Billing References

  • •
    ICD-10 Official Guidelines for J00-J99
  • •
    Clinical Documentation Requirements

Frequently Asked Questions

What specific conditions are covered by J84.113?

J84.113 specifically covers idiopathic non-specific interstitial pneumonitis, which is characterized by a pattern of lung inflammation and fibrosis without an identifiable cause. It is distinct from other forms of interstitial lung disease, such as those associated with autoimmune disorders or environmental exposures.

When should J84.113 be used instead of related codes?

J84.113 should be used when the clinical presentation aligns with idiopathic non-specific interstitial pneumonitis, and other potential causes have been ruled out. It is essential to document the idiopathic nature of the condition to differentiate it from other interstitial lung diseases.

What documentation supports J84.113?

Documentation for J84.113 should include a thorough clinical history, results from pulmonary function tests, imaging findings from HRCT scans, and any biopsy results that confirm the diagnosis while excluding other causes of interstitial lung disease.