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ICD-10 Guide
ICD-10 CodesJ84.842

J84.842

Pulmonary interstitial glycogenosis

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

Code Description

ICD-10 J84.842 is a billable code used to indicate a diagnosis of pulmonary interstitial glycogenosis.

Key Diagnostic Point:

Pulmonary interstitial glycogenosis (PIG) is a rare lung disease characterized by the accumulation of glycogen within the interstitial spaces of the lungs. Clinically, it presents with respiratory distress, cough, and hypoxemia, often in infants or young children, although it can also occur in adults. The disease primarily affects the alveolar interstitium, leading to impaired gas exchange and progressive respiratory failure. The pathophysiology involves abnormal glycogen metabolism, which may be associated with genetic disorders or environmental factors. Diagnosis is typically made through imaging studies such as high-resolution CT scans, which reveal ground-glass opacities and reticular patterns, alongside lung biopsy for histological confirmation. Disease progression can vary, with some patients experiencing chronic symptoms while others may have acute exacerbations. Early recognition and management are crucial to improve outcomes, as the condition can lead to significant morbidity if left untreated.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Diagnostic complexity: Requires specialized imaging and histological evaluation.
  • Treatment complexity: Management may involve supportive care and addressing underlying conditions.
  • Documentation requirements: Detailed clinical history and diagnostic findings are essential.
  • Coding specificity: Specific to pulmonary interstitial glycogenosis, requiring precise coding.

Audit Risk Factors

  • Common coding errors: Misclassification with other interstitial lung diseases.
  • Documentation gaps: Incomplete clinical history or lack of biopsy results.
  • Billing challenges: Potential denials due to insufficient documentation or unclear diagnosis.

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

Pathology

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

Pulmonary interstitial glycogenosis, while rare, has significant clinical implications, particularly in pediatric populations. Early diagnosis and management can improve quality of life and reduce healthcare utilization. Understanding the epidemiology of this condition is essential for healthcare providers, as it may inform screening practices and resource allocation in pulmonary care. The rarity of the disease necessitates ongoing education and awareness among healthcare professionals to ensure timely recognition and intervention.

ICD-9 vs ICD-10

Pulmonary interstitial glycogenosis, while rare, has significant clinical implications, particularly in pediatric populations. Early diagnosis and management can improve quality of life and reduce healthcare utilization. Understanding the epidemiology of this condition is essential for healthcare providers, as it may inform screening practices and resource allocation in pulmonary care. The rarity of the disease necessitates ongoing education and awareness among healthcare professionals to ensure timely recognition and intervention.

Reimbursement & Billing Impact

Reimbursement considerations include ensuring that the diagnosis is clearly supported by clinical evidence to avoid denials. Common challenges include the need for additional documentation to substantiate the diagnosis and treatment plan. Coders should be aware of payer-specific guidelines and ensure compliance with documentation standards to facilitate smooth billing processes.

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 J84.842?

J84.842 specifically covers pulmonary interstitial glycogenosis, which is characterized by the accumulation of glycogen in the lung interstitium, leading to respiratory symptoms. It is important to differentiate it from other interstitial lung diseases, such as pulmonary fibrosis or sarcoidosis.

When should J84.842 be used instead of related codes?

J84.842 should be used when the clinical presentation and diagnostic findings specifically indicate pulmonary interstitial glycogenosis. It is crucial to ensure that the diagnosis is confirmed through appropriate imaging and histological evaluation to avoid misclassification.

What documentation supports J84.842?

Documentation for J84.842 should include a comprehensive clinical history, results from imaging studies (such as CT scans), and histopathological findings from lung biopsies. Additionally, any underlying metabolic disorders should be documented to support the diagnosis.