G9531 HCPCS - PATIENT HAS DOCUMENTATION OF VENTRICULAR SHUNT, BRAIN TUMOR, MULTISYSTEM TRAUMA, OR IS CURRENTLY TAKING AN ANTIPLATELET MEDICATION INCLUDING: ABCIXIMAB, ANAGRELIDE, CANGRELOR, CILOSTAZOL, CLOPIDOGREL, DIPYRIDAMOLE, EPTIFIBATIDE, PRASUGREL, TICLOPIDINE, TICAGRELOR, TIROFIBAN, OR VORAPAXAR