Non-Hodgkin lymphoma, unsp, nodes of head, face, and neck

This code signifies a diagnosis of non-Hodgkin lymphoma where the specific type of lymphoma is not documented, and the primary or most significant site of involvement is within the lymph nodes of the head, face, or neck region. It indicates a malignant proliferation of lymphocytes without further histological classification.

This code is appropriate when a patient has a confirmed diagnosis of non-Hodgkin lymphoma, but the pathology report or physician documentation does not specify the exact subtype (e.g., diffuse large B-cell, follicular). It should be used when the medical record clearly identifies the head, face, or neck lymph nodes as the affected anatomical site.

• Always seek clarification from the provider if the specific subtype of non-Hodgkin lymphoma is not documented, as more specific codes exist.
• Ensure documentation explicitly states involvement of lymph nodes in the head, face, or neck; avoid using this code for involvement of other lymphatic sites.
• Sequence this code as the primary diagnosis when it is the reason for the encounter, followed by any associated signs, symptoms, or complications.