Interventional Radiology

What if the radiologist is asked to create a new access without dilation to place a wire only into the bladder for a urologist to perform a subsequent endourologic procedure?

What is the correct way to code for an imaging study of an ileal conduit when the injection is performed near where the conduit empties into the external drainage bag (i.e., the skin side of the conduit)?

What is meant by a stent for biliary procedures?

How would you code when selective renal angiography is performed on the main renal artery (first order vessel) in the right kidney, then a selective angiogram is performed on a second-order vessel in the left kidney?

For cervical carotid stenting, is there a code for ‘each additional vessel’?

If an injection and an aspiration are performed on the same joint at the same session, is it appropriate to code for both?

If a patient presents for a nephrostomy tube exchange but the tube fell out at home, should this be coded as a new placement (50432) or as an exchange (50435)?

What is the difference between a ‘catheter’ and a ‘stent’ in genitourinary procedures?

If a patient had a G-tube, D-or J-tube, or G-J tube previously and needs a new one placed through a new access, would this be coded as a replacement?

What is an internal-external biliary drainage catheter?