C84.13

Billable

Sézary disease, intra-abdominal 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 in the abdominal cavity.

Coding Tips

•Verify documentation confirms intra-abdominal lymph node involvement
•This includes mesenteric, retroperitoneal, and other abdominal lymph nodes

Clinical Significance

Sezary disease with intra-abdominal lymph node involvement indicates spread to mesenteric, retroperitoneal, or other abdominal lymph nodes in this aggressive leukemic cutaneous T-cell lymphoma. Abdominal lymphadenopathy may cause gastrointestinal symptoms and indicates extensive systemic disease requiring aggressive therapy.

Documentation Requirements

✓Peripheral blood demonstrating circulating Sezary cells
✓Abdominal imaging documenting intra-abdominal lymphadenopathy
✓Skin biopsy confirming cutaneous T-cell lymphoma
✓TNMB staging reflecting abdominal nodal disease
✓Treatment plan addressing systemic disease

Commonly Confused Codes

C84.03 — Mycosis fungoides, intra-abdominal: Mycosis fungoides is distinct from Sezary disease C84.10 — Sezary disease, unspecified site: Use C84.13 when abdominal lymph nodes are specifically involved C84.19 — Sezary disease, extranodal: Use when abdominal organs (not lymph nodes) are involved

Code Hierarchy

└C84Mature T/NK-cell lymphomas └C84.1Sézary disease └C84.13Sézary disease, intra-abdominal lymph nodes

└C84.13Sézary disease, intra-abdominal lymph nodes