When it comes to information blocking, the devil's in the details, and Distinct actors involved in the thorny issue are the focus of three new subgroups of the Interoperability Matters Information Blocking Workgroup of The Sequoia Project, a non-profit devoted to resolving health IT interoperability issues. Federal regulations define distinct actors in the information blocking issue, and the new subgroups map to three of them: healthcare providers, health IT developers, and health information networks/health information exchanges. In a press release, The Sequoia Project said it expects to add more subgroups over time. "We're hoping these subgroups help communities address specific operational issues and best practices regarding information blocking regulatory compliance and implementation," said Mariann Yeager, CEO of The Sequoia Project.