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Oct 18, 2017 · (b) 51: Multiple Procedures. Most radiology services do not require modifier 51. Modifier 51 applies only to nuclear medicine procedure codes 78306, 78320, 78802, 78803, 78806, 78807 and should be used only when a whole body bone, tumor, or infection study is performed on the same day prior to a SPECT bone, tumor, or infection study, respectively. ................
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