Tonight we have gone. Now, if you've been on some of our past webinars, you may have met Dawn. "Hey, how are you doing?" "Great, how are you?" "Hanging in there, still alive and well." "Great, thanks for joining us here tonight." Cool! Donna is our billing course instructor. It's an intense but fun course. Dawn likes to make it kind of light, but there's a lot of information going on in the textbook that we have. We had a question come in to the forum that was perfect for Don, so we asked her to come in tonight regarding the 1,500 forms versus the ubo forum. This ACS stands for ambulatory surgery centers, if you didn't know. Now, the question is, Don, do the ambulatory surgery centers use the CMS 1500 form or the ub-04 forms? And here's a picture of both of those. Okay, actually, that's a really good question, and it's actually a question that I once had. If you don't do ambulatory surgery coding, it's not something that you would just naturally know. What all medical billing students are taught is that inpatient billing is done on the UVO for and outpatient billing is done on the CMS 1500 form. So, an ambulatory surgery center is kind of in between both of them. So, what do you use? The answer is both forms are used depending on what type of ASC you're billing for. If the surgery center is part of the hospital, you're probably going to use the UB-04 form because the hospital uses that form. They keep everything standardized as part of the hospital. They'll bill on the UVO for. If it's a free-standing ambulatory surgery center not associated with the hospital, it will probably bill out using the CMS 1500 form, as an...