My question relates to CPT code 93660 (evaluation of cardiovascular function with tilt-table evaluation, with continuous ECG monitoring and intermittent blood pressure monitoring, with or without pharmacological intervention). Is it ok to use modifier 51

In CPT 2008, code 93660 was removed from the list of modifier -51 exempt codes, and it appears in the CPT codebook without the modifier 51 exempt symbol. This code does not meet the new modifier 51 exemption. Because modifier 51 exempt codes are typically reported with more extensive procedures or services, there should be minimal pre- and postservice time (compared to intraservice time) and minimal postoperative visits associated with the valuation of these procedures. The data obtained from the American Medical Association's RVS Update Committee (RUC) indicated that code 93660 has significant pre- and postservice time assigned.