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v1.0.0
ICD-10 Guide
DiagnosesInterstitial Pulmonary Fibrosis

Interstitial Pulmonary Fibrosis

ICD-10 Coding for Interstitial Pulmonary Fibrosis(J84.112, J84.170)

PRIMARY SPECIALTYPulmonology
COMPLEXITYHigh
LAST UPDATED09/15/2025
Sam Tuffun, PT, DPT
Physical Therapist | Medical Coding & Billing Contributor

Diagnosis Overview

What is Interstitial Pulmonary Fibrosis?
Essential facts and insights about Interstitial Pulmonary Fibrosis

Key Clinical Considerations:

  • Progressive dyspnea on exertion
  • Chronic dry cough
  • Fatigue and weight loss
  • Key diagnostic tests: High-resolution CT scan showing reticular opacities, pulmonary function tests showing restrictive pattern
  • Physical exam findings: Velcro-like crackles on auscultation, clubbing of fingers

Clinical Information

Clinical Criteria & Documentation Requirements

  • Required documentation elements: Patient history, symptom duration, diagnostic imaging results, pulmonary function test results
  • Specific coding terminology: Interstitial lung disease, pulmonary fibrosis, idiopathic pulmonary fibrosis
  • Documentation examples: 'Patient presents with progressive dyspnea and a history of chronic cough. HRCT shows ground-glass opacities and reticular patterns.'

Coding Guidelines

Usage Guidelines & Examples

  • Usage guidelines: Use specific codes for different types of pulmonary fibrosis; Common errors: Misclassifying as other lung diseases or omitting key symptoms.

Code Exclusions

Important Exclusions

  • Excluded conditions: Other forms of pulmonary fibrosis, such as those due to environmental exposures; Alternative codes: J84.10 for unspecified interstitial lung disease.

Related ICD-10 Codes

Primary Codes
J84.112
Interstitial pulmonary fibrosis
Ancillary Codes
J84.170
Differential Codes
J84.8
J84.112
J84.112
when there is no documented progression.

Related CPT Codes

CPT codes will be available in a future update.

Specialty Focus

Primary Specialty

Pulmonology

Specialty Applications

  • Patient populations: Adults, particularly those over 50; Clinical settings: Pulmonology clinics, hospitals, and specialty care centers.

Coding Complexity

High Complexity

This diagnosis requires careful attention to:

  • Comprehensive clinical documentation
  • Accurate code selection based on clinical criteria
  • Proper exclusion considerations
  • Specialty-specific coding guidelines

Documentation

Documentation Templates

Billing Information

Billing Considerations

  • Ensure proper documentation for billing
  • Verify code specificity requirements
  • Check for any additional codes needed
  • Review payer-specific guidelines

Common Issues

  • Insufficient clinical documentation
  • Incorrect code selection
  • Missing supporting diagnoses
  • Timing and frequency documentation

Frequently Asked Questions

Documentation requirements?

Document all symptoms, diagnostic tests, and clinical findings to support the diagnosis.

Billing considerations?

Ensure accurate coding to reflect the severity and complexity of the condition for appropriate reimbursement.