C84.A7
BillableCutaneous T-cell lymphoma, unspecified, spleen
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 21 — Hodgkin Lymphoma and Other Cancers
0.000What This Code Means
A cancer of T cells that primarily affects the skin with involvement of the spleen, an organ that filters blood and stores immune cells.
Coding Tips
- •Splenic involvement indicates systemic disease beyond skin manifestations
- •Verify imaging or pathology documentation confirms spleen involvement
Clinical Significance
Cutaneous T-cell lymphoma with splenic involvement indicates advanced systemic disease that has spread beyond the skin. Splenic involvement significantly impacts staging, treatment decisions, and prognosis, often requiring systemic chemotherapy rather than skin-directed therapy alone. This represents a higher disease burden requiring intensive management.
Documentation Requirements
- ✓Pathology or imaging confirmation of splenic involvement (CT, PET scan, or splenectomy findings)
- ✓Documentation that the primary lymphoma is cutaneous T-cell type confirmed by skin biopsy with immunophenotyping
- ✓Current disease staging (typically stage IV with visceral organ involvement)
- ✓Treatment plan reflecting systemic disease (chemotherapy, targeted therapy, stem cell transplant consideration)
Commonly Confused Codes
C84.A0 (Cutaneous T-cell lymphoma, unspecified site) — Use C84.A7 when spleen is specifically documented as involvedC84.Z7 (Other mature T/NK-cell lymphomas, spleen) — Use C84.A7 for cutaneous T-cell lymphoma specifically; C84.Z7 is for other T/NK-cell subtypesC84.A8 (Cutaneous T-cell lymphoma, lymph nodes of multiple sites) — Splenic involvement is coded separately from lymph node involvement
Code Hierarchy
└C84Mature T/NK-cell lymphomas└C84.ACutaneous T-cell lymphoma, unspecified└C84.A7Cutaneous T-cell lymphoma, unspecified, spleen
└C84.A7Cutaneous T-cell lymphoma, unspecified, spleen