Take a look at Cerner's SMART ® on FHIR ® tutorial. Browse different versions of the HL7 ® FHIR ® standard. Cerner implements the DSTU 2 and R4 versions of the HL7 ® FHIR ® standard. Libraries. Check out a number of open source FHIR ® implementations. Support. Are you stuck? Talk to Cerner support..