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C91.1 - Chronic lymphocytic leukemia of B-cell type


The ICD 10 Code for Chronic lymphocytic leukemia of B-cell type is listed as C91.1.
Additional information concerning this code and description can be found below including ICD 9 crosswalks / GEMS, chapter information, and DRGs where available.

ICD 10 CM Field Value
Diagnosis Code: C91.1
Description: Chronic lymphocytic leukemia of B-cell type
  • Lymphoplasmacytic leukemia
  • Richter syndrome
  • Excludes1: lymphoplasmacytic lymphoma (C83.0-)
Chapter Neoplasms (C00-D49)
Block Malignant neoplasms of lymphoid, hematopoietic and related tissue (C81-C96)
Parent C91 - Lymphoid leukemia
ICD-10-CM Children (deeper level / typically more specific) of C91.1:
C91.10 - Chronic lymphocytic leukemia of B-cell type not having achieved remission
C91.11 - Chronic lymphocytic leukemia of B-cell type in remission
C91.12 - Chronic lymphocytic leukemia of B-cell type in relapse
ICD-10-CM Siblings (same level / similar specificity) of C91.1:
C91.0 - Acute lymphoblastic leukemia [ALL]
C91.3 - Prolymphocytic leukemia of B-cell type
C91.4 - Hairy cell leukemia
C91.5 - Adult T-cell lymphoma/leukemia (HTLV-1-associated)
C91.6 - Prolymphocytic leukemia of T-cell type
C91.9 - Lymphoid leukemia, unspecified
C91.A - Mature B-cell leukemia Burkitt-type
C91.Z - Other lymphoid leukemia