C84.08
BillableMycosis fungoides, lymph nodes of multiple sites
HCC Category Mapping
V28HCC 20 — Lung and Other Severe Cancers
0.000V24HCC 10 — Lymphoma and Other Cancers
0.675ESRDHCC 10 — Lymphoma and Other Cancers
0.000RxHCCHCC 19 — Lymphoma and Other Cancers
0.000What This Code Means
A type of skin cancer (mycosis fungoides) that has spread to lymph nodes in multiple different areas of the body.
Coding Tips
- •Use this code only when mycosis fungoides involves lymph nodes at two or more distant sites
- •Document which specific lymph node regions are involved for complete clinical picture
Clinical Significance
Mycosis fungoides involving lymph nodes at multiple sites indicates widespread nodal disease representing advanced-stage cutaneous T-cell lymphoma. Multi-site lymph node involvement significantly worsens prognosis and necessitates systemic therapy. This presentation reflects transformation from localized cutaneous disease to disseminated lymphoma requiring intensive management.
Documentation Requirements
- ✓Skin biopsy confirming mycosis fungoides
- ✓Imaging documenting lymph node involvement at two or more distinct anatomic regions
- ✓Pathologic confirmation of lymphomatous involvement in at least one site
- ✓TNMB staging reflecting multi-site nodal disease
- ✓Systemic treatment plan
Commonly Confused Codes
C84.01-C84.07 — Single-site codes: Use these only when mycosis fungoides nodal involvement is limited to one regionC84.09 — Mycosis fungoides, extranodal: C84.08 is for multiple lymph node sites; C84.09 is for solid organ involvementC84.18 — Sezary disease, multiple sites: Distinct diagnosis requiring circulating malignant T-cells
Code Hierarchy
└C84Mature T/NK-cell lymphomas└C84.0Mycosis fungoides└C84.08Mycosis fungoides, lymph nodes of multiple sites
└C84.08Mycosis fungoides, lymph nodes of multiple sites