C84.A8
BillableCutaneous T-cell lymphoma, unspecified, 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 21 — Hodgkin Lymphoma and Other Cancers
0.000What This Code Means
A type of blood cancer affecting T-cells in the skin that has spread to lymph nodes in multiple locations throughout the body.
Coding Tips
- •This code is used when cutaneous T-cell lymphoma involves multiple lymph node regions; verify documentation specifies multiple sites rather than a single site
- •Ensure the primary site is documented as cutaneous (skin) with secondary involvement of lymph nodes
Clinical Significance
Cutaneous T-cell lymphoma involving multiple lymph node regions indicates advanced disseminated disease with poor prognosis. Multi-site nodal involvement typically corresponds to stage III-IV disease requiring aggressive systemic treatment. This code captures the extent of lymphomatous spread essential for accurate risk stratification.
Documentation Requirements
- ✓Documentation must specify involvement of lymph nodes in at least two distinct anatomical regions
- ✓Pathology confirmation of cutaneous T-cell lymphoma subtype via skin biopsy with immunophenotyping
- ✓Imaging (CT, PET) confirming multi-site lymph node enlargement consistent with lymphomatous involvement
- ✓Clinical staging reflecting extent of nodal disease
Commonly Confused Codes
C84.A0 (Cutaneous T-cell lymphoma, unspecified site) — Use C84.A8 when multiple lymph node regions are specifically documentedC84.A1 through C84.A6 (site-specific codes) — Use these when only a single nodal region is involved; C84.A8 requires multiple regionsC84.A9 (Cutaneous T-cell lymphoma, extranodal/solid organ sites) — C84.A8 is for nodal disease; C84.A9 is for disease outside lymph nodes
Code Hierarchy
└C84Mature T/NK-cell lymphomas└C84.ACutaneous T-cell lymphoma, unspecified└C84.A8Cutaneous T-cell lymphoma, unspecified, lymph nodes of multiple sites
└C84.A8Cutaneous T-cell lymphoma, unspecified, lymph nodes of multiple sites