The U.S. FDA raised some hackles with its final guidance for clinical decision support (CDS) software, thanks to provisions that some stakeholders argued flew against congressional intent regarding the regulatory status of some device functions. That final guidance is now the target of a petition by the CDS Coalition to withdraw and rewrite the final guidance, arguing that the agency is “doing an end run” around the limitations established by Congress regarding the FDA’s oversight of software as a medical device (SaMD).