Table 4.

Patient-Centered Outcomes Research Network 4.1 value sets with no (noncustom) exact Fast Healthcare Interoperability Resources equivalents.

Value seta	Comment
DEMOGRAPHIC.RACE	No Fast Healthcare Interoperability Resources (FHIR) value for multiple races
ENCOUNTER.ENC_TYPE	No FHIR equivalent for visits of type EI (emergency department admit to inpatient hospital stay), IC (institutional professional consult)
ENCOUNTER.DISCHARGE_STATUS	Imperfect FHIR equivalents for several discharge statuses; 17 possible values in Patient-Centered Outcomes Research Network (PCORnet) versus 11 in FHIR; values were mapped where possible.
ENCOUNTER.ADMITTING_SOURCE	Imperfect FHIR equivalents for several admitting sources; 16 possible values in PCORnet versus 10 in FHIR; values were mapped where possible.

^aPCORnet 4.1 values of No information, Unknown, and Other were rarely mappable to FHIR and are not noted each time.