Photo: John Fedele/Getty Images The 21st Century Cures Act rules around interoperability and information blocking have been in effect for more than a month, but healthcare provider organizations are still facing challenges complying with them, or even understanding them. Many are leaning on their electronic health record vendors and even outside consultants for help. WHY IT MATTERS That's according to a new report from KLAS that surveyed a small sampling of health system execs to see how they're faring with the rules from the Office of the National Coordinator for Health IT, which took effect April 5. Most of the 42 respondents reached by the research firm said they feel prepared for compliance with the information blocking rules.