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ICDMine.com › Browse ICD-10-CM Codes › Ch. 2: Neoplasms (C00-D49) › Malignant neoplasms of lymphoid, hematopoietic and related tissue (C81-C96) › C91 Lymphoid leukemia › C91.1

C91.1Chronic lymphocytic leukemia of B-cell type

ICD-10-CM category (non-billable header) code — part of Malignant neoplasms of lymphoid, hematopoietic and related tissue (C81-C96)

Code Details

Billable	No — use a more specific child code
Chapter	Chapter 2: Neoplasms (C00-D49)
Section	Malignant neoplasms of lymphoid, hematopoietic and related tissue (C81-C96)
Parent code	C91 — Lymphoid leukemia

Coding Notes

Inclusion Terms

Lymphoplasmacytic leukemia
Richter syndrome

Excludes1 (never code both together)

lymphoplasmacytic lymphoma (C83.0-)

Subcategories (3)

C91.10 Chronic lymphocytic leuk of B-cell type not achieve remis
C91.11 Chronic lymphocytic leukemia of B-cell type in remission
C91.12 Chronic lymphocytic leukemia of B-cell type in relapse

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