Versions and compatibilitydraft
How HL7v2 has evolved across versions 2.3 through 2.8, what changes between them, and what backwards-compatibility actually buys.
Work in progress
This page is a placeholder. The content is being written.
HL7v2 has been versioned for nearly four decades. This page will cover what changed between major versions, what the standard's compatibility guarantees are, and how integration teams pick a target version when partners declare different ones.
For how Glion pins a profile to a specific version, see Message conformance.