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ICD-10 Guide
ICD-10 CodesChapter 1: Certain infectious and parasitic diseasesA15.4

A15.4

Billable

Tuberculosis of intrathoracic lymph nodes

Chapter 1:Certain infectious and parasitic diseases

BILLABLE STATUSYes
IMPLEMENTATION DATEOctober 1, 2015
LAST UPDATED09/05/2025

Code Description

ICD-10 A15.4 is a billable code used to indicate a diagnosis of tuberculosis of intrathoracic lymph nodes.

Key Diagnostic Point:

Tuberculosis of intrathoracic lymph nodes is a form of extrapulmonary tuberculosis where the lymph nodes located within the thoracic cavity become infected with Mycobacterium tuberculosis. This condition often presents with symptoms such as persistent cough, fever, night sweats, and weight loss. Diagnosis typically involves imaging studies like chest X-rays or CT scans, which may reveal enlarged lymph nodes, and microbiological tests such as sputum smear and culture, or lymph node biopsy. Treatment usually consists of a multi-drug regimen including isoniazid, rifampin, ethambutol, and pyrazinamide, which must be adhered to for an extended period, often six months or longer. Monitoring for drug resistance is crucial, as non-compliance can lead to multidrug-resistant tuberculosis (MDR-TB). Public health implications are significant, as tuberculosis is a communicable disease requiring contact tracing and isolation procedures for active cases to prevent transmission. The management of tuberculosis of intrathoracic lymph nodes requires a multidisciplinary approach, including pulmonologists, infectious disease specialists, and public health officials.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Differentiating between pulmonary and extrapulmonary tuberculosis
  • Need for accurate documentation of diagnostic tests and results
  • Monitoring for drug resistance and treatment adherence
  • Public health reporting requirements

Audit Risk Factors

  • Inadequate documentation of diagnostic tests
  • Failure to report drug resistance
  • Lack of follow-up documentation
  • Improper coding of related conditions

Specialty Focus

Medical Specialties

Pulmonology

Documentation Requirements

Detailed clinical notes on symptoms, diagnostic tests, and treatment plans.

Common Clinical Scenarios

Patients presenting with respiratory symptoms and a history of TB exposure.

Billing Considerations

Ensure thorough documentation of imaging results and microbiological tests.

Infectious Disease

Documentation Requirements

Comprehensive records of treatment regimens, drug resistance testing, and patient follow-up.

Common Clinical Scenarios

Management of patients with complicated TB cases or those with drug-resistant strains.

Billing Considerations

Focus on public health implications and contact tracing efforts.

Coding Guidelines

Inclusion Criteria

Use A15.4 When
  • According to ICD
  • 10 guidelines, A15
  • 4 should be used when the clinical documentation specifies tuberculosis of the intrathoracic lymph nodes
  • It is essential to ensure that the diagnosis is confirmed through appropriate diagnostic tests and that any related conditions are also documented

Exclusion Criteria

Do NOT use A15.4 When
No specific exclusions found.

Related ICD-10 Codes

Related CPT Codes

71046CPT Code

Chest X-ray, 2 views

Clinical Scenario

Used to evaluate suspected TB in the lungs and lymph nodes.

Documentation Requirements

Document the reason for the X-ray and any findings.

Specialty Considerations

Pulmonologists should ensure imaging correlates with clinical findings.

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

The transition to ICD-10 has allowed for more specific coding of tuberculosis cases, enabling better tracking of disease prevalence and treatment outcomes. A15.4 provides a clear distinction for intrathoracic lymph node involvement, which is crucial for public health reporting and management.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of tuberculosis cases, enabling better tracking of disease prevalence and treatment outcomes. A15.4 provides a clear distinction for intrathoracic lymph node involvement, which is crucial for public health reporting and management.

Reimbursement & Billing Impact

The transition to ICD-10 has allowed for more specific coding of tuberculosis cases, enabling better tracking of disease prevalence and treatment outcomes. A15.4 provides a clear distinction for intrathoracic lymph node involvement, which is crucial for public health reporting and management.

Resources

Clinical References

  • •
    CDC Tuberculosis Guidelines

Coding & Billing References

  • •
    CDC Tuberculosis Guidelines

Frequently Asked Questions

What are the common symptoms of tuberculosis of intrathoracic lymph nodes?

Common symptoms include persistent cough, fever, night sweats, weight loss, and chest pain. Patients may also experience respiratory distress depending on the extent of lymph node involvement.