If B-cell lineage or involvement is mentioned in conjunction with a specific lymphoma, code to the more specific description.
Waldenström macroglobulinemia
Heavy chain disease
Immunoproliferative small intestinal disease
Extranodal marginal zone B-cell lymphoma of mucosa-associated lymphoid tissue [MALT-lymphoma]
Other malignant immunoproliferative diseases
Malignant immunoproliferative disease, unspecified