Wiki fiducial markers

Hey... I think Fiducial markers are gold seeds or stainless steel screws that are implanted in and/or around a soft tissue tumor, or within the bony spine, to act as a radiologic landmark, to define the target lesion's position with millimeter precision. They are typically placed using a CT or other image-guided percutaneous method.

So, V53.7 can be use. Or depends upon the other details provided in procedure.
 
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