Other Lymphoreticular Neoplasms

M-970 denotes lymphoid or histiocytic cancers that do not fit into the specific categories of lymphomas, leukemias, or histiocytoses. It includes rare or unclassifiable neoplasms of the immune system, such as certain sarcomas with lymphoid differentiation. These tumors are grouped together for coding purposes when a more precise histologic classification is unavailable.