> Have you worked with any of the things you listed? Yes, and I offer the (indeed rather scattered) list as a sampling of the formats and taxonomies one encou

> Have you worked with any of the things you listed? Yes, and I offer the (indeed rather scattered) list as a sampling of the formats and taxonomies one encounters--sometimes by essential need to code wildly different concepts like "struck on head by tortoise" vs "lower back pain, moderate" vs "Lisinopril 5mg oral tablet", sometimes by separate efforts across time or geography or organization to do sort of the same thing. From the outside it might seem a lot more tractable space than it is after you get into the weeds. Although my time with HL7 v2 over the years amounted to probably less than 100 focused hours, it didn't take long to encounter folks mangling the spec in ways HAPI rejects, mashing giant base64-encoded PDFs into ORU records, etc., and worst of all, using the "flexibility" of the records/segments to ram through rubbish not aligned to any nomenclature. Ugly pipehat serialization without schema or validation. I'm sure someone with 10 years at MGH would have a very different impression, but this one is mine.