Foliclar lymphoma grade IIIa, extrnod and solid organ sites

This code signifies a specific type of non-Hodgkin lymphoma, follicular lymphoma, that has reached grade IIIa, indicating a more aggressive cellular morphology. The "extranodal and solid organ sites" component specifies that the lymphoma is located outside of the lymph nodes, such as in the bone marrow, spleen, liver, or other organs.

Use this code for patients diagnosed with follicular lymphoma where pathology confirms a grade IIIa classification and imaging or biopsy demonstrates involvement of sites beyond the lymph nodes. Documentation must clearly state both the grade (IIIa) and the extranodal/solid organ involvement.

• Ensure the pathology report explicitly states "grade IIIa" for follicular lymphoma; do not assume based on clinical aggressiveness.
• Distinguish from C82.30 (unspecified site) and C82.31 (lymph nodes of head, face, and neck) when specific extranodal involvement is documented.
• Always code the primary malignancy first, followed by any associated complications or manifestations.