ICD-10 Logo
ICDxICD-10 Medical Coding
ICD-10 Logo
ICDxICD-10 Medical Coding
ICD 10 CodesDiagnoses
ICD 10 CodesDiagnoses
ICD-10 Logo
ICDxICD-10 Medical Coding

Comprehensive ICD-10-CM code reference with AI-powered search capabilities.

© 2025 ICD Code Compass. All rights reserved.

Browse

  • All Chapters
  • All Categories
  • Diagnoses

Tools

  • AI Code Search
ICD-10-CM codes are maintained by the CDC and CMS. This tool is for reference purposes only.
v1.0.0
ICD-10 Guide
ICD-10 CodesJ84.2

J84.2

Lymphoid interstitial pneumonia

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

Code Description

ICD-10 J84.2 is a billable code used to indicate a diagnosis of lymphoid interstitial pneumonia.

Key Diagnostic Point:

Lymphoid interstitial pneumonia (LIP) is a rare lung condition characterized by the proliferation of lymphoid tissue in the interstitial spaces of the lungs. Clinically, patients may present with symptoms such as chronic cough, dyspnea, and fatigue, often leading to a misdiagnosis of other respiratory conditions. The anatomy involved includes the alveoli and interstitial spaces of the lungs, where the abnormal lymphoid tissue disrupts normal gas exchange. Disease progression can vary; some patients may experience stable disease, while others may progress to pulmonary fibrosis or respiratory failure. Diagnostic considerations include high-resolution computed tomography (HRCT) scans, which reveal characteristic ground-glass opacities and reticular patterns, and lung biopsy, which is essential for confirming the diagnosis. LIP is often associated with autoimmune conditions, particularly Sjögren's syndrome, and can occur in immunocompromised patients, making a thorough clinical history and examination critical for accurate diagnosis and management.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Diagnostic complexity
  • Treatment complexity
  • Documentation requirements
  • Coding specificity

Audit Risk Factors

  • Common coding errors
  • Documentation gaps
  • Billing challenges

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

Lymphoid interstitial pneumonia has significant clinical implications, particularly in populations with underlying autoimmune diseases or immunocompromised states. Its rarity can lead to underdiagnosis or misdiagnosis, impacting patient outcomes and healthcare utilization. Understanding the epidemiology of LIP is crucial for improving quality measures and ensuring appropriate management strategies are in place for affected individuals.

ICD-9 vs ICD-10

Lymphoid interstitial pneumonia has significant clinical implications, particularly in populations with underlying autoimmune diseases or immunocompromised states. Its rarity can lead to underdiagnosis or misdiagnosis, impacting patient outcomes and healthcare utilization. Understanding the epidemiology of LIP is crucial for improving quality measures and ensuring appropriate management strategies are in place for affected individuals.

Reimbursement & Billing Impact

Reimbursement considerations include the need for clear evidence of the diagnosis through imaging and biopsy results. Common denials may arise from insufficient documentation or failure to demonstrate medical necessity for procedures performed. Best practices include maintaining thorough clinical notes and ensuring that all relevant tests and findings are clearly linked to the diagnosis of lymphoid interstitial pneumonia.

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 J84.2?

J84.2 specifically covers lymphoid interstitial pneumonia, which may be associated with conditions such as Sjögren's syndrome, HIV infection, and other immunocompromised states. It is important to differentiate it from other interstitial lung diseases.

When should J84.2 be used instead of related codes?

J84.2 should be used when the diagnosis of lymphoid interstitial pneumonia is confirmed through clinical evaluation and histological evidence. It is distinct from other interstitial lung diseases that do not involve lymphoid proliferation.

What documentation supports J84.2?

Documentation should include a detailed clinical history, imaging studies (such as HRCT), and results from lung biopsies that confirm lymphoid interstitial pneumonia. Additionally, any associated autoimmune conditions should be documented.