My doctor plans on starting radiofrequency (not pulsed) ablation of the nerves that innervate the SI joints. Would 64622 be appropriate (it does include sacral area)? If so, would 64623 for any additional levels also be appropriate? The sales rep suggests 64622 1st level and 64640 peripheral nerves for other levels. I just don't feel comfortable with company recommendations - you know, they can provide copies of EOBs from different providers who get reimbursed mega bucks for some of these services! But that doesn't mean the codes are correct! Any input, and any links that you feel might help to substantiate the codes would be greatly appreciated. I thought I read somewhere that SI RF is a miscellaneous code, but I may be mistaken. We weren't doing these services, so I did not save the article. Of course, my memory may not recall the info correctly, either - old age setting in and all! Thanks and HAPPY NEW YEAR!