What you have to prove
Meet listing via: (A) acute leukemia — automatic disability for at least 24 months from the date of diagnosis or initiation of induction therapy; OR (B) chronic myelogenous leukemia in blast phase; OR (C) chronic leukemia (including CLL) requiring initiation of 3 or more courses of treatment within 12 months; OR (D) treatment by bone marrow or stem cell transplantation (24 months from transplant).
Medical evidence SSA expects
Bone marrow biopsy and cytogenetics, peripheral blood studies, treatment records, and hematology/oncology notes.
Common misconceptions
Chronic leukemia on watchful waiting (e.g., stable CLL) doesn't qualify. Acute leukemia and transplant recipients qualify automatically for the specified durations.