Chronic Lymphocytic Leukemia
Chronic Lymphocytic Leukemia is indexed under Oncologic-Adjacent Chronic, Lymphoproliferative. Also known as CLL, small lymphocytic lymphoma, SLL.
- US prevalence
- 235,781 people estimated to be living with chronic lymphocytic leukemia in the United States in 2023 Source: NCI SEER, Chronic Lymphocytic Leukemia Cancer Stat Facts. This figure comes from a professional society, registry, or study rather than a federal source. Label: REPORTED.
- ICD-10-CM codes
- C91.1
- Typical onset
- Median age at diagnosis ~72
- Course
- progressive
- Body systems
- hematologic, immunologic
- Sex differences
- M:F ~1.5-2:1
- Racial and ethnic differences
- Less common in Asian Americans; similar in others
What this page does not establish
These figures describe populations, not individuals, and none of them is a diagnosis or a treatment recommendation. Prevalence estimates are approximate and reflect published ranges. Disparity figures are reported patterns, not causes.
Taxonomy last reviewed 2026-05-19. Each figure on the interactive page carries its own source and retrieval date, which can be later than this review.
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