This learning program introduces HL7 v2 messaging, a key standard used to exchange healthcare data between digital systems. Despite its age, HL7 v2 is still widely used across NHS infrastructure, especially in systems like PAS, LIMS, and EPMA platforms, to send and receive patient movements, medication orders, lab results, and more. Whether you’re a pharmacist, informatics professional, or digital system lead, understanding how HL7 v2 works will strengthen your ability to support, troubleshoot, and optimise EPMA integrations. You’ll learn the structure of HL7 messages, common segments (like PID, ORC, RDE), and how data flows between systems in real-world settings. The program also explores tools for reading HL7 messages, the challenges of local customisation, and how HL7 v2 fits into broader digital transformation goals, especially with the rise of FHIR. By the end of this course, you’ll be able to read, interpret, and troubleshoot HL7 v2 messages with confidence, giving you a vital skillset for working at the interface of clinical care and digital infrastructure. No prior coding or integration experience required, just curiosity and a willingness to explore the technical foundations of modern healthcare.