What Is The Difference Between The Following:78830 The Provider Uses

What is the difference between the following:78830
The provider uses a gamma–emitting radioactive tracer to diagnose and localize a tumor, inflammatory process, or radiopharmaceutical agent distribution in a single body area by SPECT scanning with concurrent CT transmission scan for review of anatomy and to determine the presence of pathology. Vascular flow and blood pool imaging to determine how well the heart is pumping blood are included if performed. This code represents single–day imaging of a single area such as head, neck, chest, or pelvis.

78315
The provider performs a three–phase bone scan (also known as scintigraphy), a specialized nuclear medicine procedure in which the provider injects a radionuclide prior to imaging to examine the various bones of the skeleton and/or to diagnose bone disease.