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ICD10BillableValid for clinical use

ICD-10 Code A15.4: Tuberculosis of intrathoracic lymph nodes

A15.4 is a billable ICD-10 diagnosis code used to classify Tuberculosis of intrathoracic lymph nodes in medical records and claims. You may see this code in hospital records, discharge summaries, insurance claims, encounter documentation, referrals, or other healthcare billing and coding records. ICD-10 codes are diagnosis classification codes used in healthcare records, reporting, coding workflows, and billing support. This code sits within the broader ICD-10 area for Certain infectious and parasitic diseases (A00-B99).

What is this code?

ICD-10 codes are diagnosis classification codes used in healthcare records, reporting, coding workflows, and billing support. This code sits within the broader ICD-10 area for Certain infectious and parasitic diseases (A00-B99).

đź“‹Clinical overview

This ICD-10 code is commonly used when documentation describes respiratory tuberculosis. The most accurate code depends on whether the chart identifies lung, intrathoracic lymph-node, laryngeal, tracheobronchial, pleural, primary respiratory, or another respiratory tuberculosis site.

When is it used?

  • May be used when a clinician documents tuberculosis of intrathoracic lymph nodes in a patient's medical record.
  • May appear in hospital records, claims, referrals, and clinical documentation.
  • This code can be used as a clinically usable diagnosis entry in standardized coding workflows.

What it does not mean

  • A code alone does not explain severity, treatment plan, or outcome.
  • A medical code should not be treated as a substitute for a doctor's diagnosis or advice.

đź©şClinical context

When commonly used
  • Infectious-disease, pulmonary, inpatient, public-health, and follow-up documentation where active tuberculosis involves the lungs or another respiratory structure.
  • Coding and utilization-review workflows where the chart clearly identifies the affected respiratory site and that site changes final tuberculosis code specificity.
Common workup
  • Common related testing on this page includes Sputum acid-fast bacilli smear, Mycobacterium tuberculosis PCR.
Common management context
  • Respiratory-tuberculosis follow-up often includes microbiology and imaging review, isolation or transmission-precaution context, symptom monitoring, and infectious-disease or pulmonary treatment planning.
  • Documentation usually becomes more specific when the chart identifies lung versus pleural versus airway versus intrathoracic-lymph-node involvement, or clarifies another respiratory-site pattern.
  • Specialist context already linked on this page includes Infectious Disease Specialist, General Physician.

🔍Key distinctions

Important notes
  • This ICD-10 family covers respiratory tuberculosis and is distinct from extrapulmonary tuberculosis branches because the involved respiratory site drives code selection.
  • Specific respiratory-site detail matters here, because lung, pleura, intrathoracic lymph nodes, larynx, trachea, bronchus, and other respiratory structures are coded separately when documented.
  • Tuberculosis of intrathoracic lymph nodes is coded separately from pulmonary, pleural, laryngeal or tracheobronchial, and other respiratory tuberculosis patterns.
  • Documentation that describes respiratory tuberculosis is coded differently from extrapulmonary tuberculosis because the affected respiratory site drives final code selection.
Important exclusions
  • tuberculosis specified as primary (A15.7)
Related codes to consider
A15.0Tuberculosis of lung
Related respiratory-tuberculosis ICD-10 code; documentation often becomes more specific when the chart identifies the affected respiratory site or names a more precise anatomic location.
A15.5Tuberculosis of larynx, trachea and bronchus
Related respiratory-tuberculosis ICD-10 code; documentation often becomes more specific when the chart identifies the affected respiratory site or names a more precise anatomic location.
A15.6Tuberculous pleurisy
Related respiratory-tuberculosis ICD-10 code; documentation often becomes more specific when the chart identifies the affected respiratory site or names a more precise anatomic location.
A15.7Primary respiratory tuberculosis
Related respiratory-tuberculosis ICD-10 code; documentation often becomes more specific when the chart identifies the affected respiratory site or names a more precise anatomic location.

Code hierarchy

chapter
1Certain infectious and parasitic diseases (A00-B99)
block
A15-A19Tuberculosis
category
A15Respiratory tuberculosis
currentA15

Official coding notes

Inclusion terms
  • Tuberculosis of hilar lymph nodes
  • Tuberculosis of mediastinal lymph nodes
  • Tuberculosis of tracheobronchial lymph nodes
Excludes1 (do not code together)
  • tuberculosis specified as primary (A15.7)

Where you may see this code

You may see this code in hospital records, discharge summaries, insurance claims, encounter documentation, referrals, or other healthcare billing and coding records.

Related specialists

Infectious Disease SpecialistGeneral Physician

Related tests

Sputum acid-fast bacilli smear
Commonly considered in pulmonary tuberculosis workup.
Mycobacterium tuberculosis PCR
May help identify tuberculosis DNA in appropriate clinical settings.

Coding guidelines

Compatibility

Legacy and official ICD code match exactly.
Legacy codes
A15.4

Common synonyms

Tuberculosis of intrathoracic lymph nodes

Frequently asked questions

Code details

CodeA15.4
SystemICD10
Display nameTuberculosis of intrathoracic lymph nodes
ChapterCertain infectious and parasitic diseases (A00-B99)
BlockTuberculosis

Flags

BillableYes
Valid clinical useYes

Source

SourceICD-10
Version2026-annual
Releaseannual
Year2026

Index terms

Matched terms
Adenopathy(lymph gland)Adenopathy(lymph gland)Tuberculosis, tubercular, tuberculous(calcification) (calcified) (caseous) (chromogenic acid-fast bacilli) (degeneration) (fibrocaseous) (fistula) (interstitial) (isolated circumscribed lesions) (necrosis) (parenchymatous) (ulcerative)Tuberculosis, tubercular, tuberculous(calcification) (calcified) (caseous) (chromogenic acid-fast bacilli) (degeneration) (fibrocaseous) (fistula) (interstitial) (isolated circumscribed lesions) (necrosis) (parenchymatous) (ulcerative)Tuberculosis, tubercular, tuberculous(calcification) (calcified) (caseous) (chromogenic acid-fast bacilli) (degeneration) (fibrocaseous) (fistula) (interstitial) (isolated circumscribed lesions) (necrosis) (parenchymatous) (ulcerative)Tuberculosis, tubercular, tuberculous(calcification) (calcified) (caseous) (chromogenic acid-fast bacilli) (degeneration) (fibrocaseous) (fistula) (interstitial) (isolated circumscribed lesions) (necrosis) (parenchymatous) (ulcerative)Tuberculosis, tubercular, tuberculous(calcification) (calcified) (caseous) (chromogenic acid-fast bacilli) (degeneration) (fibrocaseous) (fistula) (interstitial) (isolated circumscribed lesions) (necrosis) (parenchymatous) (ulcerative)Tuberculosis, tubercular, tuberculous(calcification) (calcified) (caseous) (chromogenic acid-fast bacilli) (degeneration) (fibrocaseous) (fistula) (interstitial) (isolated circumscribed lesions) (necrosis) (parenchymatous) (ulcerative)Tuberculosis, tubercular, tuberculous(calcification) (calcified) (caseous) (chromogenic acid-fast bacilli) (degeneration) (fibrocaseous) (fistula) (interstitial) (isolated circumscribed lesions) (necrosis) (parenchymatous) (ulcerative)Tuberculosis, tubercular, tuberculous(calcification) (calcified) (caseous) (chromogenic acid-fast bacilli) (degeneration) (fibrocaseous) (fistula) (interstitial) (isolated circumscribed lesions) (necrosis) (parenchymatous) (ulcerative)Tuberculosis, tubercular, tuberculous(calcification) (calcified) (caseous) (chromogenic acid-fast bacilli) (degeneration) (fibrocaseous) (fistula) (interstitial) (isolated circumscribed lesions) (necrosis) (parenchymatous) (ulcerative)Tuberculosis, tubercular, tuberculous(calcification) (calcified) (caseous) (chromogenic acid-fast bacilli) (degeneration) (fibrocaseous) (fistula) (interstitial) (isolated circumscribed lesions) (necrosis) (parenchymatous) (ulcerative)

About this content

This page is prepared by HealthAssure's clinical team using official coding standards from ICD-10. AI tools assist with drafting explanations, which are then reviewed and verified by healthcare professionals for accuracy. This content is for informational purposes and does not replace professional medical advice. Meet our team.