Follicular lymphoma grade II, nodes of head, face, and neck

This code signifies a specific type of non-Hodgkin lymphoma, follicular lymphoma, which is characterized by a grade II cellular differentiation. The malignancy is localized to the lymph nodes situated in the head, face, and neck regions. This indicates a relatively slow-growing cancer originating from B-lymphocytes.

This code is appropriate for patients diagnosed with grade II follicular lymphoma affecting the cervical, supraclavicular, preauricular, or other lymph node groups within the head and neck. Documentation must explicitly state "follicular lymphoma," "grade II," and specify involvement of lymph nodes in the head, face, or neck. Pathological confirmation of the grade is essential.

• Ensure the documentation clearly specifies "grade II" for follicular lymphoma; otherwise, an unspecified grade code may be more appropriate.
• Verify the anatomical site of involvement is strictly limited to lymph nodes of the head, face, or neck. If other sites are involved, additional codes will be necessary.
• Distinguish from other grades of follicular lymphoma (e.g., grade I, grade III) and diffuse large B-cell lymphoma, as these have distinct codes.