C82.05
BillableFollicular lymphoma grade I, 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 slow-growing type of lymphoma called follicular lymphoma grade I located in the lymph nodes of the groin or lower leg and thigh region.
Coding Tips
- •Inguinal lymph nodes are located in the groin; lower limb nodes extend down the leg
- •Document whether involvement is unilateral or bilateral for complete clinical picture
Clinical Significance
Follicular lymphoma grade I in inguinal and lower limb lymph nodes represents peripheral nodal involvement commonly identified on physical examination. Inguinal lymphadenopathy requires differentiation from reactive nodes, infections, and other malignancies. This site designation is important for accurate staging and treatment planning.
Documentation Requirements
- ✓Biopsy-confirmed follicular lymphoma with grade I histology
- ✓Physical exam or imaging confirming inguinal/lower limb lymph node involvement
- ✓Laterality (unilateral vs. bilateral involvement)
- ✓Complete staging workup results
- ✓Treatment status documentation
Commonly Confused Codes
C82.15 — Grade II of same site; requires pathologic grade differentiationC82.06 — Intrapelvic nodes; inguinal nodes are superficial/external, intrapelvic are deep/internalC77.4 — Secondary neoplasm of inguinal nodes; use for metastatic disease, not primary lymphomaC82.08 — Multiple sites; use when inguinal involvement is part of widespread disease
Code Hierarchy
└C82Follicular lymphoma└C82.0Follicular lymphoma grade I└C82.05Follicular lymphoma grade I, lymph nodes of inguinal region and lower limb
└C82.05Follicular lymphoma grade I, lymph nodes of inguinal region and lower limb