When billing CPT® 78608 for dementia, is modifier PI or PS required?
No, modifiers PI and PS are used on claims for positron emission tomography (PET) for oncologic indications only. If a brain PET is performed for dementia, assign the following code without modifiers PI or PS:
|78608||Brain imaging, positron emission tomography (PET); metabolic evaluation|
If a brain PET is performed for cancer, then PI or PS would be required with 78608.