I worked in EMR company and the amount of monthly legislative changes was insane. Insurance companies always changed their data formats every month. I think they did it because if hospital's monthly export contained some error they could hold their money for couple days more. So anyway when our country switched to euro, the deadline came and the insurance company still didn't publish format for the new month. They we…
In the USA at least there is a single mandated technical standard for providers to send claims to payers (insurance companies). Changes to the technical format are infrequent, although some payers do change their coverage rules all the time. https://www.cms.gov/priorities/key-initiatives/burden-reduct...
Granted, whenever a new requirement comes into play, cue frantic scrambling by underfunded provider/insurer IT departments to support, followed by a few years of waivers from HHS to allow everyone to implement, followed by support a decade later.
But it is moving the system forward.