Diffuse follicle center lymphoma, intra-abd lymph nodes

This code signifies a specific type of non-Hodgkin lymphoma, characterized by the widespread involvement of follicle center cells, primarily affecting lymph nodes located within the abdominal cavity. It represents a high-grade lymphoma with diffuse growth patterns, originating from germinal center B-cells.

Apply this code when documentation clearly indicates a diagnosis of diffuse follicle center lymphoma with confirmed involvement of intra-abdominal lymph nodes. This diagnosis is typically established through biopsy and histopathological examination, often following imaging studies revealing abdominal lymphadenopathy.

• Ensure the pathology report explicitly states "diffuse follicle center lymphoma" and specifies intra-abdominal involvement.
• Differentiate from follicular lymphoma (which has a nodular pattern) and other diffuse large B-cell lymphomas.
• Code any associated symptoms or complications, such as B symptoms or organ compression, as secondary diagnoses.