Section 523 of the Federal Food, Drug, and Cosmetic (FD&C) Act codifies the 510(k) Third Party Review Program (3P Review Program), which authorizes certain qualified third parties (3P Review Organizations) to conduct the initial review of premarket notification submissions for certain low-to-moderate risk medical devices. The 3P Review Program has been in existence since 1996, and the Food and Drug Administration (FDA) has modified aspects of the 3P Review Program from time to time to comply with changes in the statutory framework. The FDA Reauthorization Act of 2017 (FDARA), which was signed into law on August 18, 2017, amended Section 523. In response, the FDA has now published a draft guidance, titled “510(k) Third Party Review Program Draft Guidance for Industry, Food and Drug Administration Staff, and Third Party Review Organizations,” which modifies the 3P Review Program guidance. Comments and suggestions are due by December 13, 2018. When finalized, this guidance will supersede FDA’s guidance documents from 2001 and 2004.