Follicular lymphoma grade II, intrathoracic lymph nodes

This code signifies a specific type of non-Hodgkin lymphoma, follicular lymphoma, which is characterized by a grade II cellular differentiation. The disease is located within the intrathoracic lymph nodes, meaning the lymph nodes located inside the chest cavity are affected. This indicates a moderate-grade malignancy with a particular anatomical involvement.

Use this code when documentation clearly specifies follicular lymphoma, grade II, and explicitly states the involvement of intrathoracic lymph nodes. This is appropriate for initial diagnoses, subsequent encounters for active treatment, or follow-up care where this specific staging and location are confirmed. Supporting documentation includes pathology reports, imaging studies, and physician notes detailing the diagnosis and anatomical site.

• Ensure the pathology report confirms "follicular lymphoma" and "grade II" to accurately assign this code.
• Verify that the documentation specifically identifies "intrathoracic lymph nodes" as the primary site of involvement; do not assume based on general chest findings.
• Do not confuse with other grades of follicular lymphoma (e.g., grade I, grade III) or other anatomical sites of involvement.