![]() PET is considered medically necessary in situations in which clinical management of the member would differ depending on the stage of the cancer identified and either: Therefore, the use of PET in the diagnosis of lymphoma, esophageal carcinoma, colorectal cancers, and melanoma is rarely considered medically necessary. PET scans following a tissue diagnosis are performed for the purpose of staging, not diagnosis. In general, for most solid tumors, a tissue diagnosis is made prior to the performance of PET scanning. The PET results may assist in avoiding an invasive diagnostic procedure, or the PET results may assist in determining the optimal anatomic location to perform an invasive diagnostic procedure. PET-CT Fusion: The fusion of PET and CT imaging into a single system (PET/CT fusion) is considered medically necessary for any indication where PET scanning is considered medically necessary. ![]() Upon individual case review, FDG-PET scanning may be considered medically necessary for other oncologic indications that are not listed as medically necessary below, when the conventional imaging that is indicated for that oncologic indication is equivocal, and general medical necessity criteria for oncologic indications (section B.1. T-cell lymphoma (includes peripheral T-cell lymphoma, Mycosis Fungoides/Sézary Syndrome, primary cutaneous CD30+ T-cell lymphoproliferative disorders).Post-transplant lymphoproliferative disorder.Non-Hodgkin's lymphoma (for select subtypes, see section II.B.8.).Head and neck cancers (excluding cancers of the central nervous system).Chronic lymphocytic leukemia/small lymphocytic lymphoma (CLL/SLL) with suspected Richter's transformation.Diagnostic tests such as FDG-PET distinguish between dysfunctional but viable myocardial tissue and scar tissue in order to affect the management decisions in members with ischemic cardiomyopathy and left ventricular dysfunction.Īetna considers absolute quantitation of myocardial blood flow (AQMBF) a medically necessary adjunct to cardiac PET when criteria for evaluating myocardial viability above are met.įDG-PET is considered medically necessary to identify and monitor response to therapy for established or strongly suspected cardiac sarcoid.Īetna considers FDG-PET medically necessary for the following oncologic indications, when the following general and disease-specific criteria for diagnosis, staging, restaging and/or monitoring are met, and the FDG-PET scan is necessary to guide management: The identification of members with partial loss of heart muscle movement or hibernating myocardium is important in selecting candidates with compromised ventricular function to determine appropriateness for re-vascularization. ![]() The greater specificity of PET makes a SPECT following an inconclusive PET not medically necessary.
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