Andrew Gaunt

I *think* so. "id" doesn't seem to have changed between STU3 "id" -> https://www.hl7.org/fhir/STU3/datatypes.html#id -> Regex: [A-Za-z0-9\-\.]{1,64} and R4 "id" -> http://hl7.org/fhir/R4/datatypes.html#id -> Regex: [A-Za-z0-9\-\.]{1,64} At least, not according to...