C82.45
BillableFollicular lymphoma grade IIIb, lymph nodes of inguinal region and lower limb
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 type of cancer of the lymph system (follicular lymphoma) in an advanced stage, located in the lymph nodes of the groin and lower leg area.
Coding Tips
- •Confirm the grade IIIb designation is documented in the pathology or oncology report
- •The '45' designator indicates inguinal region and lower limb; differentiate from other lymphoma sites
Clinical Significance
Follicular lymphoma grade IIIb in inguinal and lower limb lymph nodes combines the most aggressive follicular subtype with a peripheral nodal site. Grade IIIb inguinal disease requires curative-intent treatment and differentiation from DLBCL. The inguinal location allows physical exam monitoring of treatment response but may cause lower extremity lymphedema with bulky disease.
Documentation Requirements
- ✓Pathology confirming grade IIIb pattern
- ✓Physical exam or imaging documenting inguinal/lower limb involvement
- ✓Laterality documentation
- ✓Expert hematopathology to distinguish from DLBCL
- ✓Curative-intent treatment plan
Commonly Confused Codes
Code Hierarchy
└C82Follicular lymphoma└C82.4Follicular lymphoma grade IIIb└C82.45Follicular lymphoma grade IIIb, lymph nodes of inguinal region and lower limb
└C82.45Follicular lymphoma grade IIIb, lymph nodes of inguinal region and lower limb