Can an E/M level code, say 99212-24 or 99213-24 be assigned if a patient has for example, an aortic valve repair, comes in for follow up for that (which would be bundled as it is only one month after) however the MD also evaluates other diagnoses such at atrial fibrillation, hypertension and hyperlipidemia? I know follow up visits to just assess the postop surgery period are not billable but I am having a hard time when the MD assesses other conditions and remarks about upcoming tests to further evaluate such as echos or EKGs. Is the visit not related to the previous surgery billiable? Thanks so much in advance.