C84.16

Billable

Sézary disease, intrapelvic lymph nodes

HCC Category Mapping

V28HCC 17 — Metastatic Cancer and Acute Leukemia

0.368

V24HCC 10 — Lymphoma and Other Cancers

0.675

ESRDHCC 10 — Lymphoma and Other Cancers

0.000

RxHCCHCC 19 — Lymphoma and Other Cancers

0.000

What This Code Means

Sézary disease, an aggressive form of skin cancer, affecting lymph nodes inside the pelvis.

Coding Tips

•Confirm intrapelvic lymph node involvement through imaging or pathology reports
•This includes iliac, obturator, and other pelvic lymph nodes

Clinical Significance

Sezary disease with intrapelvic lymph node involvement indicates deep pelvic lymph node spread in this aggressive leukemic T-cell lymphoma. Intrapelvic involvement is relatively uncommon and represents significant visceral lymph node disease requiring systemic management. This finding typically contributes to advanced disease staging.

Documentation Requirements

✓Peripheral blood demonstrating circulating Sezary cells
✓Pelvic imaging documenting intrapelvic lymphadenopathy
✓Skin biopsy confirming cutaneous T-cell lymphoma
✓TNMB staging reflecting deep nodal disease
✓Systemic treatment plan

Commonly Confused Codes

C84.15 — Sezary disease, inguinal/lower limb: Inguinal nodes are superficial; intrapelvic are deep C84.10 — Sezary disease, unspecified site: Use C84.16 when intrapelvic involvement is confirmed C84.06 — Mycosis fungoides, intrapelvic: Distinct from Sezary disease

Code Hierarchy

└C84Mature T/NK-cell lymphomas └C84.1Sézary disease └C84.16Sézary disease, intrapelvic lymph nodes

└C84.16Sézary disease, intrapelvic lymph nodes