Yes – and no. The U.S. FDA UDI Rule adopted YYYY-MM-DD, which is an ISO standard. However, the
ISO standard also includes abbreviated date formats (like YYYY-MM), which the U.S. FDA UDI Rule does
not allow. Only the full ISO format is acceptable pursuant to the U.S. FDA UDI Rule. In addition, the rule
requires the dashes between the date segments, whereas the dashes are optional under the ISO rule.
