C82.42
BillableFollicular lymphoma grade IIIb, intrathoracic 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 type of cancer of the lymph system (follicular lymphoma) that is grade IIIb and located in the lymph nodes within the chest cavity.
Coding Tips
- •Intrathoracic lymph nodes are located in the chest; confirm imaging or pathology documentation supports this location
- •Chest involvement may affect respiratory function; note any clinical symptoms in the medical record
Clinical Significance
Follicular lymphoma grade IIIb in intrathoracic lymph nodes combines the most aggressive follicular subtype with mediastinal or hilar disease. This presentation may require urgent treatment for bulky mediastinal disease with compressive symptoms. Grade IIIb is managed with curative-intent regimens similar to DLBCL, making prompt and accurate coding essential for treatment pathway determination.
Documentation Requirements
- ✓Pathology confirming grade IIIb pattern
- ✓CT/PET documenting intrathoracic node involvement with size measurements
- ✓Assessment for bulky mediastinal disease and compressive symptoms
- ✓Expert hematopathology review distinguishing from DLBCL and primary mediastinal B-cell lymphoma
- ✓Urgent treatment plan if symptomatic
Commonly Confused Codes
Code Hierarchy
└C82Follicular lymphoma└C82.4Follicular lymphoma grade IIIb└C82.42Follicular lymphoma grade IIIb, intrathoracic lymph nodes
└C82.42Follicular lymphoma grade IIIb, intrathoracic lymph nodes