( April 20, 2026, 2:26 PM EDT) -- SAN FRANCISCO — The Ninth Circuit U.S. Court of Appeals on April 17 vacated and remanded a lower court order granting summary judgment to a health system and a supervisor in a qui tam suit filed by a physician and a manager who alleged violations of the False Claims Act (FCA) and related state law for fraudulent billing to Medicaid, finding that though the lower court determined that expressing concerns about purported fraudulent billing was a protected activity under the FCA, the court erred in holding that the physician did not establish a dispute regarding the retaliation against him because of the protected activity....