Diffuse large B-cell lymphoma, nodes of head, face, and neck

This code signifies a specific type of aggressive non-Hodgkin lymphoma, diffuse large B-cell lymphoma (DLBCL), when it originates or primarily affects the lymph nodes located in the head, face, or neck regions. DLBCL is characterized by rapidly growing tumors composed of large B-lymphocytes.

Apply this code when documentation clearly states a diagnosis of diffuse large B-cell lymphoma with primary involvement or manifestation in the cervical, supraclavicular, preauricular, or other lymph node groups of the head, face, or neck. This code is appropriate for both initial diagnosis and subsequent encounters for this specific site involvement.

• Ensure the documentation specifies "diffuse large B-cell lymphoma" and not another subtype of non-Hodgkin lymphoma.
• Confirm the anatomical site of involvement is explicitly stated as lymph nodes of the head, face, or neck.
• Do not use this code if the DLBCL is extranodal or affects lymph nodes in other body regions; specific codes exist for those sites.