Foliclar lymphoma grade IIIb, extrnod and solid organ sites

This code signifies a high-grade, aggressive form of follicular lymphoma that has originated or spread to sites outside of the lymph nodes, such as the bone marrow, spleen, or other organs. Follicular lymphoma is a type of non-Hodgkin lymphoma characterized by a follicular growth pattern. Grade IIIb indicates a significant proportion of centroblasts, suggesting more aggressive behavior.

Use this code for patients diagnosed with follicular lymphoma where biopsy and pathology reports confirm Grade IIIb and imaging or clinical findings indicate involvement of extranodal or solid organ sites. Documentation must clearly specify both the grade and the extranodal/solid organ involvement.

• Ensure documentation explicitly states "Grade IIIb" and identifies specific extranodal or solid organ involvement.
• Do not confuse with other grades of follicular lymphoma (e.g., C82.0-C82.3, C82.5-C82.8) or other types of non-Hodgkin lymphoma.
• Always sequence this code as the primary diagnosis when it is the reason for the encounter, followed by codes for any associated symptoms or complications.