C84.06
BillableMycosis fungoides, 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 19 — Lymphoma and Other Cancers
0.000What This Code Means
A rare type of skin cancer (mycosis fungoides) that has spread to the lymph nodes in the pelvis area.
Coding Tips
- •Confirm intrapelvic lymph node involvement through CT or MRI imaging of the pelvis
- •The '6' designator specifically indicates pelvic lymph node involvement
Clinical Significance
Mycosis fungoides with intrapelvic lymph node involvement is an uncommon presentation indicating advanced disease with spread to deep pelvic lymph nodes such as iliac or obturator nodes. This level of visceral lymph node involvement in mycosis fungoides signifies high-stage disease requiring aggressive systemic management and carries a poor prognosis compared to skin-limited disease.
Documentation Requirements
- ✓Skin biopsy confirming mycosis fungoides
- ✓Pelvic imaging documenting intrapelvic lymphadenopathy
- ✓Pathologic confirmation of lymphomatous involvement if available
- ✓TNMB staging reflecting deep nodal disease
- ✓Systemic treatment plan
Commonly Confused Codes
C84.05 — Mycosis fungoides, inguinal/lower limb: Inguinal nodes are superficial groin nodes; intrapelvic are deep pelvic nodesC84.00 — Mycosis fungoides, unspecified site: Use C84.06 when intrapelvic involvement is confirmedC83.96 — Non-follicular lymphoma, unspecified, intrapelvic: For non-follicular lymphoma, not mycosis fungoides
Code Hierarchy
└C84Mature T/NK-cell lymphomas└C84.0Mycosis fungoides└C84.06Mycosis fungoides, intrapelvic lymph nodes
└C84.06Mycosis fungoides, intrapelvic lymph nodes