Date of diagnosis--Heme and Lymphoid Neoplasms: Is the date of diagnosis coded to the date a bone marrow biopsy revealed "plasma cell neoplasm; plasma cells are < 10%" or the date a diagnosis of myeloma was noted in the Discharge Summary? See Discussion.
Multiple primaries--Heme & Lymphoid Neoplasms: How many primaries are reported if a 2013 diagnosis of right leg skin nodules, consistent with plasmacytoma/plasma cell myeloma, follows a 3/20/07 biopsy diagnosis of multiple myeloma?
MP/H Rules/Multiple primaries--Thyroid: How many primaries are reported and what is histology for the papillary carcinomas if a Classical cytomorphology with a follicular architecture is on the right and a Columnar cell cytomorphology with a follicular and papillary architecture is on the left? See Discussion.
Primary Site--Heme & Lymphoid Neoplasms: Is the primary site coded to C779 or C421 for a bone marrow that is positive for B-cell acute lymphoblastic leukemia, the peripheral blood demonstrates leukemic involvement and the PET scan shows involvement of abdominal lymph nodes, spleen and throughout the bones? See Discussion.
Histology--Heme & Lymphoid Neoplasms: Should the histology be coded to a therapy-related myeloid neoplasm when the physician states the diagnosis of acute myeloid leukemia is secondary to treatment with Imuran? See Discussion.
Primary Site--Heme & Lymphoid Neoplasms: What primary site code should be assigned and what rule justifies that code?
Scenario: Pleural effusion, underwent thoracentesis. Pleural fluid unexpectedly showed Large B-Cell Lymphoma. Extensive workup including CT & PET was done and all findings were within normal limits. No evidence of lymphoma was seen and no palpable adenopathy was found. The only indication of lymphoma was the malignant pleural effusion.
Other therapy--Heme and Lymphoid Neoplasms: Based on the hematopoietic manual instructions, is plasmapheresis coded as treatment for Waldenstrom macroglobulinemia? See Discussion.
Diagnostic confirmation--Heme & Lymphoid Neoplasms: How do we code diagnostic confirmation if the pathology report states the diagnosis of a skin biopsy is "low-grade B cell lymphoma, most compatible with marginal zone lymphoma," genetic data includes positive rearrangement for immunoglobulin heavy chain gene favor a diagnosis of "B cell lymphoma," and the physician's clinical diagnosis is "cutaneous marginal zone lymphoma"?
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