PDex defines profiles (and extensions) on the base Provenance resource to allow payers to report provenance of clinical information on a member to meet the requirements of the CMS Interoperability Final Rule.  Since payers are seldom the author of clinical information, they do not have the ability to populate the provenance.recorded element (cardinality 1..1).  We have created profiles that follow the US Core Profile to the extent possible given the use case. We request an exception to the requirement to use a US Core Profile on Provenance for this specific use case.