Choosing Between Modifiers GA, GX, GY, and GZ

This webinar occurred on 3/26/26. Medicare provides 2 modifiers to show a service is not medically necessary on a claim. There are also 2 modifiers showing a service is not a Medicare benefit. This webinar provides information for choosing between these 4 modifiers. We will: • Define the modifiers GA, GX, GY, and GZ • Explain when to use each modifier • Provide information on the Advance Beneficiary Notice of Noncoverage (ABN) Resources Medicare Benefit Policy Manual, Chapter 16 – General Exclusions From Coverage https://www.cms.gov/regulations-and-g... Medicare Coverage Database https://www.cms.gov/medicare-coverage... Form CMS-R-131 https://www.cms.gov/medicare/forms-no... CMS Medicare Claims Processing Manual, Chapter 30 - Financial Liability Protections, Section 50 https://www.cms.gov/regulations-and-g... Chapters 00:00 Intro 02:08 Definitions 10:42 Modifiers Usage 21:46 Completing the ABN 42:19 Registration Questions 51:55 Chat Questions 56:03 Closing Comments