Wiki question on colonoscopy/egd


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One of the docs says he can bill a 99234 which is an observation code when he bills for colonscopy or and egd on the sameday. I state that H&P etc would be included in global for outpatient colonoscopy or egd. He states that since there are no global days for either procedure he can bill the 99234. What are your thoughts? Does anyone know of where I can find in writing what is included in colonscopies and EGD? We are in PA. Any help is appreciated. thanks!
screening pre procedural visit

I also would like to know the answer to this. I have been told that Medicare includes the office visit prior to the colonoscopy if there are no other dx and it is just for a screening. But we have been getting paid for it and I can't find it in writing either.