Diffus folicl cntr lymph, nodes of ing region and lower limb

This code identifies a specific type of non-Hodgkin lymphoma, diffuse follicle center lymphoma, when it is located in the lymph nodes of the inguinal region or lower limb. This is a high-grade lymphoma characterized by a diffuse growth pattern of follicular center cells.

Apply this code when documentation explicitly states a diagnosis of diffuse follicle center lymphoma with primary or metastatic involvement of lymph nodes in the groin, thigh, or leg. Supporting documentation should include pathology reports confirming the lymphoma subtype and imaging or clinical notes specifying the affected anatomical sites.

• Differentiate from follicular lymphoma (C82.0-C82.9) which has a nodular growth pattern.
• Ensure the anatomical site (inguinal region and lower limb lymph nodes) is clearly documented.
• Do not use for extranodal involvement or involvement of lymph nodes in other body regions.