C82.13
BillableFollicular lymphoma grade II, intra-abdominal lymph nodes
HCC Category Mapping
V28HCC 21 — Breast, Prostate, Colorectal and Other Cancers and Tumors
0.545V24HCC 10 — Lymphoma and Other Cancers
0.675ESRDHCC 10 — Lymphoma and Other Cancers
0.000RxHCCHCC 21 — Hodgkin Lymphoma and Other Cancers
0.000What This Code Means
A slow-growing cancer of lymph cells (follicular lymphoma, grade II) affecting lymph nodes in the abdomen.
Coding Tips
- •Intra-abdominal lymph nodes include mesenteric, retroperitoneal, and other abdominal lymph node groups
- •Document whether abdominal involvement is isolated or part of multifocal disease for staging purposes
Clinical Significance
Follicular lymphoma grade II in intra-abdominal lymph nodes reflects intermediate-grade disease in mesenteric, retroperitoneal, or para-aortic nodes. Abdominal nodal disease is frequently identified on staging CT/PET and may be the dominant site of disease burden. Monitoring for GI complications from bulky abdominal adenopathy is important.
Documentation Requirements
- ✓Pathology confirming grade II follicular lymphoma
- ✓Cross-sectional imaging documenting intra-abdominal lymph node involvement and measurements
- ✓Specific abdominal nodal chains involved (mesenteric, retroperitoneal, para-aortic)
- ✓Ann Arbor staging documentation
- ✓Assessment for complications (bowel obstruction, ureteral compression)
Commonly Confused Codes
C82.03 — Grade I, intra-abdominal; verify pathology gradeC82.16 — Grade II, intrapelvic; distinguish abdominal (above pelvic brim) from pelvic nodesC82.19 — Extranodal/solid organ; hepatic or GI tract parenchymal involvement is extranodalC82.18 — Multiple sites; use when abdominal plus other non-contiguous regions are involved
Code Hierarchy
└C82Follicular lymphoma└C82.1Follicular lymphoma grade II└C82.13Follicular lymphoma grade II, intra-abdominal lymph nodes
└C82.13Follicular lymphoma grade II, intra-abdominal lymph nodes