C82.39

Billable

Follicular lymphoma grade IIIa, extranodal and solid organ sites

HCC Category Mapping

V28HCC 21 — Breast, Prostate, Colorectal and Other Cancers and Tumors

0.545

V24HCC 10 — Lymphoma and Other Cancers

0.675

ESRDHCC 10 — Lymphoma and Other Cancers

0.000

RxHCCHCC 21 — Hodgkin Lymphoma and Other Cancers

0.000

What This Code Means

A type of cancer of the lymph system (follicular lymphoma) that is grade IIIa and located outside of lymph nodes in other organs or tissues.

Coding Tips

•Extranodal involvement means the cancer has spread to organs outside the lymph system; document the specific organ affected
•This code indicates more advanced disease with involvement of solid organs or tissues

Clinical Significance

Follicular lymphoma grade IIIa involving extranodal and solid organ sites indicates high-grade disease with centrocyte presence that has spread to organs outside the lymphatic system. This is stage IV disease by definition, and the extranodal involvement combined with grade IIIa raises clinical concern for potential transformation. Common extranodal sites include bone marrow, liver, and GI tract.

Documentation Requirements

✓Pathology confirming grade IIIa follicular lymphoma in extranodal tissue
✓Specific extranodal sites documented
✓Bone marrow biopsy results if performed
✓Organ function testing for involved sites
✓Assessment for transformation to DLBCL

Commonly Confused Codes

C82.37 — Grade IIIa, spleen; spleen has its own code, not extranodal C82.38 — Grade IIIa, multiple nodal sites; for nodal disease only C82.29 — Grade III unspecified, extranodal; use C82.39 when IIIa is specified C83.39 — DLBCL, extranodal; if transformation has occurred

Code Hierarchy

└C82Follicular lymphoma └C82.3Follicular lymphoma grade IIIa └C82.39Follicular lymphoma grade IIIa, extranodal and solid organ sites

└C82.39Follicular lymphoma grade IIIa, extranodal and solid organ sites