Health care organizations seek to maximize efficiency and effectiveness when sending patient event notifications required by the U.S. Centers for Medicare and Medicaid Services Interoperability and Patient Access Final Rule. This resource, authored by DirectTrust partners and industry experts, identifies the barriers for senders (i.e., hospitals) and receivers (Department of Veterans Affairs [VA] and non-VA) of patient event notifications using the Direct Standard, the transport method standard that addresses Direct Messaging (DM).