Ask Dr. Z

Hi Dr. Z, We had emailed a question thru the website within the last six months and have not heard/seen anything posted on the webpage. Our question was when a radiologist injects contast into a replaced prosthetic joint to look for prosthetic loosening/complications, is this considered an arthrogram? There can be a minimum of 2 views or up to multiple views obtained of the joint. This usually follows an aspiration to look for infection. How would this be coded? If this is considered an arthrogram, how should be code when a MLP injects the joint and the radiologist interprets the images? Thanks for the assistance!!