Alphabetic Index · main term
Richter syndrome
Richter syndrome is a main term in the FY2027 ICD-10-CM Alphabetic Index (Index to Diseases and Injuries). It is a cross-reference: the Index sends you to Leukemia, chronic lymphocytic, B-cell type, which lists C91.1-. Confirm the code in the Tabular List before you report it.
Where the Index sends you
see Leukemia, leukemic, chronic lymphocytic, of B-cell type
Chronic lymphocytic leukemia of B-cell type