C84.A6
BillableCutaneous T-cell lymphoma, unspecified, intrapelvic lymph nodes
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 lymph nodes inside the pelvis.
Coding Tips
- •Intrapelvic lymph nodes include iliac, obturator, and other pelvic nodes
- •Ensure documentation specifically mentions pelvic lymph node involvement
Clinical Significance
Cutaneous T-cell lymphoma, unspecified, involving intrapelvic lymph nodes represents advanced cutaneous T-cell lymphoma with deep pelvic nodal spread. Intrapelvic nodal involvement is unusual in cutaneous T-cell lymphoma and generally indicates advanced or transformed disease. Detection requires cross-sectional imaging as these nodes are not accessible on physical examination.
Documentation Requirements
- ✓Skin biopsy confirming cutaneous T-cell lymphoma
- ✓CT, MRI, or PET/CT documenting intrapelvic lymph node involvement
- ✓Confirmation of lymphomatous involvement of pelvic nodes
- ✓Updated TNMB staging reflecting pelvic nodal disease
- ✓Assessment for disease transformation
Commonly Confused Codes
C84.A5 — Cutaneous T-cell lymphoma, inguinal/lower limb: Inguinal nodes are superficial groin nodes, distinct from deep intrapelvic nodesC84.A3 — Cutaneous T-cell lymphoma, intra-abdominal: Abdominal nodes are above the pelvic brimC84.96 — Mature T/NK-cell lymphoma, unspecified, intrapelvic: General T/NK lymphoma without cutaneous primary specificationC84.06 — Mycosis fungoides, intrapelvic: If mycosis fungoides is specifically diagnosed
Code Hierarchy
└C84Mature T/NK-cell lymphomas└C84.ACutaneous T-cell lymphoma, unspecified└C84.A6Cutaneous T-cell lymphoma, unspecified, intrapelvic lymph nodes
└C84.A6Cutaneous T-cell lymphoma, unspecified, intrapelvic lymph nodes