C84.15
BillableSézary disease, lymph nodes of inguinal region and lower limb
HCC Category Mapping
V28HCC 17 — Metastatic Cancer and Acute Leukemia
0.368V24HCC 10 — Lymphoma and Other Cancers
0.675ESRDHCC 10 — Lymphoma and Other Cancers
0.000RxHCCHCC 19 — Lymphoma and Other Cancers
0.000What This Code Means
Sézary disease, an aggressive form of skin cancer, affecting lymph nodes in the groin and lower legs.
Coding Tips
- •Verify inguinal and/or lower limb lymph node involvement is documented
- •This code includes both inguinal and lower extremity lymph nodes
Clinical Significance
Sezary disease with inguinal and lower limb lymph node involvement indicates lymph node spread in the groin and lower extremity regions of this aggressive leukemic T-cell lymphoma. Inguinal lymphadenopathy is common in Sezary disease, particularly when lower extremity skin involvement is prominent. This contributes to overall disease staging and treatment planning.
Documentation Requirements
- ✓Peripheral blood demonstrating circulating Sezary cells
- ✓Inguinal or lower limb lymph node involvement confirmed by exam or imaging
- ✓Skin biopsy confirming cutaneous T-cell lymphoma
- ✓TNMB staging
- ✓Treatment plan for advanced-stage disease
Commonly Confused Codes
C84.05 — Mycosis fungoides, inguinal/lower limb: Distinct from Sezary disease; requires circulating malignant T-cellsC84.16 — Sezary disease, intrapelvic: Deep pelvic nodes are distinct from superficial inguinal nodesC84.10 — Sezary disease, unspecified site: Use C84.15 when inguinal involvement is confirmed
Code Hierarchy
└C84Mature T/NK-cell lymphomas└C84.1Sézary disease└C84.15Sézary disease, lymph nodes of inguinal region and lower limb
└C84.15Sézary disease, lymph nodes of inguinal region and lower limb