I'm having some trouble getting vaccination administration codes paid for adults... We're billing G0008 (admin of flu vaccine), 90471-polio, 90472-Tetanus & diptheria. I believed CMS recognized the G code as an initial code so originally we billed the G code and only 90472s for the remaider of the drugs. We changed that and now we are billing as stated above. We are getting denials now because the 90471 and the G code are bundled. I chaecked CCI and they are bundled. WPS (our carrier) is telling us we need a 59 on the G code... I was under the impression that we don't use modifiers on HCPCS codes?? Anybody had any luck getting these code sets paid when having to bill with the G code for either flu or pneumoccoccal vaccines? Thank you!!