Histology--Lymphoma: What code is used to represent the histology "monomorphic post-transplant lymphoproliferative disorder [diffuse large B-cell lymphoma]"? See Description.
Histology--Hematopoietic, NOS: If an initial bone marrow diagnosis is "...more compatible with CMML/MPD" and within three months the final diagnosis per the oncologist is "MPD/CMML with acute myeloid leukemia transformation," is histology coded to CMML or AML? See Discussion.
Reportability/Behavior--Hematopoietic, NOS: Is a "myelodysplastic/myeloproliferative disease, unclassifiable" coded to 9975 with a behavior code of 3 as indicated in the WHO blue book on "Tumours of Haematopoietic and Lymphoid Tissues" or is it not abstracted because it has a behavior code of 1 which means the case is not reportable?
Histology--CLL/SLL: What is the correct histology code for a lymph node described in the pathology report comment section as "phenotypically consistent with chronic lymphocytic leukemia"? See Discussion.
Diagnostic Confirmation/Histology--Hematopoietic: How are these fields coded when the final pathologic diagnosis for a bone marrow biopsy differs from the final clinical diagnosis of a hematopoietic disease? See Discussion.
Grade, Differentiation--Lymphoma/Leukemia: Should the term "Pre-T" be added to code 5 [T-cell] in the ICD-O-3 Table 22, 6th Digit Code for Immunophenotype Designation for Lymphoma and Leukemia?
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