Chronic lymphocytic leukemia (CLL) is a chronic lymphoproliferative disorder (lymphoid neoplasm). It is characterized by a progressive accumulation of functionally incompetent B lymphocytes, which are usually monoclonal in origin.
On March 5, 2024, the Department of Health and Human Services (HHS) issued a
statement about a cybersecurity incident in late February impacting Change
Healthcare – a unit of UnitedHealth Group (UHG).