Oth types of follicular lymphoma, lymph nodes mult site

This code signifies a diagnosis of follicular lymphoma that doesn't fit into the more common categories (e.g., grade I, II, III) and involves multiple lymph node regions throughout the body. It indicates a disseminated form of this specific B-cell non-Hodgkin lymphoma, requiring a more generalized treatment approach.

Use this code when the pathology report confirms follicular lymphoma, but the specific grade or subtype is not otherwise classifiable, and imaging or clinical examination indicates involvement of lymph nodes in multiple, non-contiguous anatomical sites. Documentation should clearly state "other types" or "not otherwise specified" follicular lymphoma with evidence of multifocal lymphadenopathy.

• Ensure documentation explicitly states "other types" or provides details that preclude classification into specific grades (e.g., C82.0-C82.7).
• Verify that multiple lymph node sites are involved; if only a single site is affected, a different code for follicular lymphoma of a single site would be more appropriate.
• Always sequence this code as the primary diagnosis when it is the reason for the encounter, unless a complication or manifestation is being treated first.