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

This code signifies a diagnosis of non-follicular lymphoma, which is a broad category of non-Hodgkin lymphomas characterized by a diffuse growth pattern rather than a follicular one. Specifically, it indicates that the lymphoma is located in the lymph nodes of the head, face, or neck region, and the specific type of non-follicular lymphoma is not further specified in the medical record.

This code is appropriate when a patient is diagnosed with a diffuse large B-cell lymphoma, peripheral T-cell lymphoma, or other non-follicular lymphoma, and the primary site of involvement is documented as the lymph nodes of the head, face, or neck. It should be used when the pathology report confirms a non-follicular lymphoma but does not provide a more specific sub-type, or when the provider's documentation explicitly states "unspecified non-follicular lymphoma."

• Ensure documentation clearly specifies "non-follicular" or "diffuse" and the involvement of head, face, or neck lymph nodes.
• Avoid using this code if a more specific sub-type of non-follicular lymphoma (e.g., diffuse large B-cell lymphoma) is identified; instead, use the appropriate sub-type code.
• This code should be sequenced as a primary diagnosis when the lymphoma is the reason for the encounter, or as a secondary diagnosis when it is a co-morbidity.