ICD-10-CM > C00-D49 > C81-C96 > C91 > C91.1 C91.1 Chronic lymphocytic leukemia of B-cell type Non-Billable/Non-Specific Applicable To Lymphoplasmacytic leukemiaRichter syndrome Type 1 Excludes lymphoplasmacytic lymphoma (C83.0-) Codes C91.10Chronic lymphocytic leukemia of B-cell type not having achieved remissionC91.11Chronic lymphocytic leukemia of B-cell type in remissionC91.12Chronic lymphocytic leukemia of B-cell type in relapse