I work for a multi specialty group (we have cardiologists and pcp's to list a few) the pt is seeing the cardiologist for a pacer check and then the cardiologist asks the pt to come back to the office in 3 months to get just EKG done. Should this EKG visit be billed under the cardiologist services (specialist copay) or under the pts pcp (pcp copay) - pt is not seeing either provider, just the nurse for the EKG? Also since the pt is seeing the nurse and she is taking vitals does this warrant the 99211 to be billed?