Histology: How is this field coded for a perivascular epithelioid cell neoplasm (PEComa) of uncertain malignant potential that is malignant based on the presence of metastases? See Discussion.
Histology/Reportability--Heme and Lymphoid Neoplasms: Is a case that is compatible with low grade myelodysplastic syndrome with multilineage dysplasia (MDS-MLD) reportable, and if so, is the histology plasma cell myeloma or myelodysplastic syndrome (MDS)? See Discussion.
Histology/Heme & Lymphoid Neoplasms: Should the histology be coded to chronic myeloid leukemia (CML), BCR-ABL1-positive (9875/3) regardless of the quantitative analysis percentage of BCR-ABL1 that was detected? See Discussion.
Histology/Heme & Lymphoid Neoplasms--Mycosis Fungoides: What is the histology code for lymphomatoid papulosis that transforms initially to mycosis fungoides (MF)/cutaneous T-cell lymphoma (CTCL) and subsequently to CTCL with large cell transformation, and is it a new primary? See Discussion.
Histology/Heme & Lymphoid Neoplasms--Leukemia: Is this the correct histology for a case of acute myeloid leukemia (AML) with recurrent genetic abnormalities? If the only information was AML with recurrent genetic abnormalities,"what code would you use: AML, NOS (9861/3) or AML with recurrent genetic abnormalities (9896/3)? See Discussion.