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Diagnostic confirmation: When a CT guided Fine Needle Aspiration is performed and the pathology report indicates smears and cell block were prepared, if the diagnosis is positive for cancer, can you code diagnostic confirmation as 2 (positive cytology) because of the cell block?

Diagnostic confirmation--Heme and Lymphoid Neoplasms--Lymphoma: Is Diagnostic Confirmation "5" for Hematopoietic Neoplasms appropriate for this case? There appears to be no conclusive histologic diagnosis (Neoplasm, suggestive of lymphoma) and only the IHC/flow cytometry issued a conclusive diagnosis. See Discussion.

Diagnostic confirmation--Heme & Lymphoid Neoplasms: Is Diagnostic Confirmation coded to 5 or 8 based on a patient diagnosed as multiple myeloma by a physician based on a bone marrow biopsy stating plasma cell neoplasm? See Discussion.

Diagnostic confirmation--Heme & Lymphoid Neoplasms: Is Diagnostic Confirmation coded as 5 (positive laboratory test/ marker study) or code 8 (clinical diagnosis only) for a case that has a positive JAK2 mutation, and based on the results of the JAK2, the physician diagnosed the patient with polycythemia vera? There were no blood smears or bone marrow biopsies done.

Diagnostic confirmation--Heme & Lymphoid Neoplasms: How does one determine and code a clinical diagnosis for the diagnostic confirmation in patient diagnosed with essential thrombocythemia? 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"?

Diagnostic confirmation--Heme & Lymphoid Neoplasms (Lymphoma): To code "3" in Diagnostic Confirmation, does the genetic testing need to confirm a specific histology or is it enough that is simply rules out others? See Discussion.

Diagnostic Confirmation: How is Diagnostic Confirmation coded for malignancies diagnosed by a FoundationOne Liquid biopsy/assay involving circulating tumor DNA in blood only? See Discussion.

Diagnostic Confirmation--Heme & Lymphoid Neoplasms: How is Diagnostic Confirmation coded for hematopoietic and lymphoid neoplasms (heme) when immunophenotyping, genetics, etc. confirm the diagnosis.

Diagnostic Confirmation--Heme & Lymphoid Neoplasms--Plasma Cell Myeloma: Can serum protein electrophoresis (SPEP) be used as a definitive diagnostic method in the absence of a bone marrow biopsy? Is it appropriate to assign code 5 (Positive laboratory test/marker study) if there is no histological confirmation? See Discussion.