I need to inquire about ultrasounds that are done in an office. Is it okay to not bill a procedure until the report comes back? For example, the doctor orders an Echocardiogram for a. fib. or shortness of breath, but those are not "payable dx codes", is it ok to hold those and bill after the report comes back, if the report does infact show a payable diagnosis, such as Mitral Regurgitation?