You might want to review your endoscopy operative reports to make sure that your coders have been reporting submucosal GI injections. I'm sensing that many coders haven't been, either because they don't know that injection codes 43201, 43236, 45335 and 45381 are on the ASC List (they are, since 2003) or because they think they can only report these codes when an injection is the only procedure performed (not so). Here's how to make sure you're reimbursed for these longer and more difficult endoscopic procedures.