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C84.12

Billable

Sézary disease, intrathoracic lymph nodes

HCC Category Mapping

V28HCC 17Metastatic Cancer and Acute Leukemia
0.368
V24HCC 10Lymphoma and Other Cancers
0.675
ESRDHCC 10Lymphoma and Other Cancers
0.000
RxHCCHCC 19Lymphoma and Other Cancers
0.000

What This Code Means

Sézary disease, an aggressive form of skin cancer, affecting lymph nodes inside the chest cavity.

Coding Tips

  • Confirm intrathoracic lymph node involvement through imaging or pathology documentation
  • This code indicates mediastinal and/or hilar lymph node involvement

Clinical Significance

Sezary disease with intrathoracic lymph node involvement indicates spread to mediastinal or hilar lymph nodes in this aggressive leukemic T-cell lymphoma. Intrathoracic involvement may cause respiratory symptoms and represents extensive disease requiring systemic management. This is an expected finding in advanced Sezary disease.

Documentation Requirements

  • Peripheral blood demonstrating circulating Sezary cells
  • Chest imaging documenting intrathoracic lymphadenopathy
  • Skin biopsy confirming cutaneous T-cell lymphoma
  • TNMB staging
  • Systemic treatment plan

Commonly Confused Codes

Code Hierarchy

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