Hi all does anyone have an answer for a cath question. What is the difference between a left heart cath (93452) and catheter placement coronary artery with...(93458). This is silly I have gone through the whole section and didn't notice the different wording until I did a practice question. I'm sure it is something basic, like with cath placement no proc was done. But the other code has the same wording. I am so burnt out on this section. Need some help Thanks.: