ABSTRACT
Using an HL7 interface message, the medication order was communicated to an external pharmacy system. The complexities of HL7 include both the technology standards and the semantic standards. Events like a medication order generate an HL7 message that is communicated through an interface engine and then to the receiving system. Upon review, the original computerized provider order entry (CPOE) HL7 message that was sent to the pharmacy system was passed through an enterprise interface engine and then a CPOE interface engine before being received by the external pharmacy application and used the same route upon return to the CPOE system. In the CPOE system, the medication is ordered as a generic name and a dose, without product-level considerations. The CPOE application accepted the verification with the dose modification from the pharmacy system and changed the order view and the electronic medication administration record view of the order to a dose of 14 mg.
