Diffuse folicl center lymph, nodes of head, face, and neck

This code describes a specific type of non-Hodgkin lymphoma, diffuse follicle center lymphoma, when it originates or is primarily located within the lymph nodes of the head, face, or neck region. This aggressive B-cell lymphoma is characterized by a diffuse growth pattern and features of follicle center cells.

Use this code when documentation confirms a diagnosis of diffuse follicle center lymphoma, and the primary site of involvement is explicitly stated as the lymph nodes of the head, face, or neck. This code is appropriate for initial diagnoses, as well as for subsequent encounters related to the management of this specific lymphoma in the specified anatomical location.

• Ensure the pathology report specifically identifies "diffuse follicle center lymphoma" and not another subtype of follicular lymphoma.
• Verify the anatomical site is explicitly documented as lymph nodes of the head, face, or neck; avoid using this code for involvement in other regions.
• Consider sequencing this code as the primary diagnosis when it is the reason for the encounter, followed by any associated symptoms or complications.