Small cell B-cell lymphoma, spleen

This code signifies a malignant neoplasm originating from small B-lymphocytes, specifically located within the spleen. It represents a type of non-Hodgkin lymphoma characterized by the proliferation of small, mature-appearing B-cells.

Use this code when documentation clearly states a diagnosis of small cell B-cell lymphoma with confirmed involvement of the spleen. This diagnosis is typically established through biopsy and histopathological examination of splenic tissue.

• Ensure the pathology report explicitly identifies the lymphoma as "small cell B-cell type" and confirms splenic involvement.
• Do not use for other types of B-cell lymphomas or if the primary site is unknown or elsewhere.
• Consider sequencing with codes for any associated symptoms or complications, such as splenomegaly, if documented.