Question: When treating a new or established patient and then deciding to do a PRP laser (67228) the same day, do we need to append modifier 57 [...] You’ve reached your limit of free articles. Already a subscriber? Log in. Not a subscriber? Subscribe today to continue reading this article. Plus, you’ll get: Simple explanations of current healthcare regulations and payer programs Real-world reporting scenarios solved by our expert coders Industry news, such as MAC and RAC activities, the OIG Work Plan, and CERT reports Instant access to every article ever published in Revenue Cycle Insider 6 annual AAPC-approved CEUs The latest updates for CPT®, ICD-10-CM, HCPCS Level II, NCCI edits, modifiers, compliance, technology, practice management, and more Want to know more about Revenue Cycle Insider? Fill out this form to get more information. By completing this form, you are requesting to be contacted by AAPC. For more information, please refer to our Privacy Policy.