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C84.A2

Billable

Cutaneous T-cell lymphoma, unspecified, intrathoracic lymph nodes

HCC Category Mapping

V28HCC 20Lung and Other Severe Cancers
0.000
V24HCC 10Lymphoma and Other Cancers
0.675
ESRDHCC 10Lymphoma and Other Cancers
0.000
RxHCCHCC 21Hodgkin Lymphoma and Other Cancers
0.000

What This Code Means

A cancer of T cells that primarily affects the skin with involvement of lymph nodes inside the chest cavity.

Coding Tips

  • Intrathoracic lymph nodes include mediastinal and hilar nodes; confirm chest involvement is documented
  • This code indicates systemic spread beyond skin involvement

Clinical Significance

Cutaneous T-cell lymphoma, unspecified, involving intrathoracic lymph nodes indicates cutaneous lymphoma that has progressed to involve mediastinal or hilar nodes. Intrathoracic nodal involvement in a cutaneous T-cell lymphoma suggests significant systemic spread beyond typical skin-confined disease. This represents advanced staging and changes the treatment approach from skin-directed to systemic therapy.

Documentation Requirements

  • Original skin biopsy confirming cutaneous T-cell lymphoma
  • Chest imaging documenting intrathoracic lymph node involvement
  • Node biopsy or PET avidity confirming lymphomatous involvement
  • TNMB staging incorporating intrathoracic nodal findings
  • Treatment plan reflecting systemic disease

Commonly Confused Codes

Code Hierarchy

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