C82.01
BillableFollicular lymphoma grade I, lymph nodes of head, face, and neck
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 head, face, or neck region.
Coding Tips
- •Verify documentation specifies involvement of head, face, or neck lymph nodes
- •Grade I indicates the lowest histologic grade with best prognosis
Clinical Significance
Follicular lymphoma grade I involving head, face, and neck lymph nodes represents a low-grade non-Hodgkin lymphoma with an indolent clinical course. This site-specific code captures the anatomic distribution critical for staging (Ann Arbor) and treatment planning. Accurate capture ensures appropriate risk adjustment for ongoing oncologic surveillance and management costs.
Documentation Requirements
- ✓Pathology report confirming follicular lymphoma with histologic grade I (0-5 centroblasts per high-power field)
- ✓Specific lymph node sites involved (cervical, submandibular, preauricular, occipital, etc.)
- ✓Ann Arbor staging with Lugano modifications
- ✓Current treatment status (watchful waiting, immunotherapy, chemoimmunotherapy)
- ✓Documentation that disease is NOT in remission (use C82.0A if in remission)
Commonly Confused Codes
C82.11 — Follicular lymphoma grade II of head/face/neck; grade II has 6-15 centroblasts per HPF vs. grade I with 0-5; verify pathology report gradeC85.11 — Unspecified non-Hodgkin lymphoma of head/face/neck; use only when follicular subtype is not confirmed by pathologyC82.08 — Follicular lymphoma grade I, multiple sites; use C82.01 when head/face/neck is the sole or primary site, not when multiple regions are involvedC82.0A — Follicular lymphoma grade I in remission; do not use C82.01 if provider documents complete or partial remission
Code Hierarchy
└C82Follicular lymphoma└C82.0Follicular lymphoma grade I└C82.01Follicular lymphoma grade I, lymph nodes of head, face, and neck
└C82.01Follicular lymphoma grade I, lymph nodes of head, face, and neck