This is a Request for Information (RFI) for solutions for electronic prescribing including the electronic prescribing of controlled substances (EPCS). See the attached RFI SOW. This RFI is issued sole... This is a Request for Information (RFI) for solutions for electronic prescribing including the electronic prescribing of controlled substances (EPCS). See the attached RFI SOW. This RFI is issued solely for information and planning purposes. It does not constitute a solicitation or a promise to issue a solicitation in the future.