Malignant neoplasms of lymphoid, hematopoietic and related tissue (C81-C96)
C90: Multiple myeloma and malignant plasma cell neoplasms

excludes1
personal history of other malignant neoplasms of lymphoid, hematopoietic and related tissues (Z85.79)
C90.0: Multiple myeloma
C90.1: Plasma cell leukemia
C90.2: Extramedullary plasmacytoma
C90.3: Solitary plasmacytoma

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