Diffuse folicl center lymph, nodes of axilla and upper limb

This code signifies a specific type of non-Hodgkin lymphoma, diffuse follicle center lymphoma, when it is located in the lymph nodes of the axilla or upper limb. It indicates a widespread (diffuse) growth pattern of malignant B-cells originating from the germinal centers of lymphoid follicles. This is a high-grade lymphoma requiring aggressive treatment.

Apply this code when documentation confirms a diagnosis of diffuse follicle center lymphoma, with explicit mention of involvement of axillary or upper limb lymph nodes. Pathological reports confirming the specific subtype and location are essential. This code is appropriate for initial diagnosis, staging, and subsequent encounters where the primary site is relevant.

• Ensure the pathology report specifically identifies "diffuse follicle center lymphoma" and not another subtype of follicular lymphoma.
• Verify the anatomical site; this code is specific to axillary and upper limb lymph nodes. Other sites require different codes.
• Consider sequencing this code as the primary diagnosis when the lymphoma is the reason for the encounter, followed by any associated symptoms or complications.