From a technical perspective its possible, but geodata companies have business rules that don't allow it. No provider will allow those segments to be created (I

From a technical perspective its possible, but geodata companies have business rules that don't allow it. No provider will allow those segments to be created (I've tried to do it). If you reach out to placeiq, factual, oracle, etc they will turn you away. Healthcare targeting has been severely reduced in the past couple years because of concerns like these. You used to be able to target diseases/interest in diseases/etc but can't anymore.