Foliclar lymph grade IIIa, nodes of ing rgn and lower limb

This code signifies a specific type of non-Hodgkin lymphoma, follicular lymphoma, which is characterized by a grade IIIa cellular differentiation. The disease is localized to the lymph nodes found in the groin area and extending into the lower extremities. This grade indicates a more aggressive form of follicular lymphoma compared to grades I and II.

Use this code when documentation explicitly states a diagnosis of follicular lymphoma, specifically graded as IIIa, and the primary site of involvement is identified as the lymph nodes of the inguinal region and/or lower limb. Supporting documentation should include pathology reports confirming the follicular lymphoma and its grade, along with imaging or physical exam findings detailing the affected lymph node regions.

• Ensure the pathology report clearly specifies "grade IIIa" for follicular lymphoma; do not assume the grade.
• Verify the anatomical site of involvement is limited to the inguinal region and/or lower limb lymph nodes.
• Consider sequencing this code after any codes for primary malignancy if the follicular lymphoma is a secondary or metastatic finding, though it is often a primary diagnosis itself.