Positron Emission Tomography (PET) – Head Imaging 6.01.47
Effective May 15, 2026, Excellus BCBS policy 6.01.47 sets the criteria for PET head imaging, which were removed from CMP 6.01.07. The 01/22/26 update added a medically necessary statement for amyloid brain PET (CPT 78814 or 78811) when a diagnosis of MCI or dementia due to Alzheimer disease is suspected, and a statement that perfusion PET brain (CPT 78609) is not medically necessary in the evaluation of dementia. FDG brain PET (CPT 78608) is medically necessary for mild cognitive impairment, dementia evaluation, Lewy body dementia versus Alzheimer disease, suspected encephalitis, and pre-surgical evaluation of refractory seizure when all listed criteria are met, and it is not medically necessary for Parkinson disease, normal pressure hydrocephalus, or chronic traumatic encephalopathy.