- HL7 - HL7 terms to better understand what is HL7. There are four primary HL7 standard message types: - Patient Administration ([ADT](http://www.corepointhealth.com/resource-center/hl7-resources/hl7-adt)) - Orders ([ORM](http://www.corepointhealth.com/resource-center/hl7-resources/hl7-orm-message)'s) - Results ([ORU](http://www.corepointhealth.com/resource-center/hl7-resources/hl7-oru-message)'s) - Charges ([DFT](http://www.corepointhealth.com/resource-center/hl7-resources/hl7-dft-detail-financial-transaction)'s) - Most commonly used HL7 message types include: - [ACK](https://corepointhealth.com/resource-center/hl7-resources/hl7-acknowledgement-ack) – General acknowledgement - [ADT](https://corepointhealth.com/resource-center/hl7-resources/hl7-adt) – Admit, Discharge, Tranfser - BAR – Add/change billing account - [DFT](https://corepointhealth.com/resource-center/hl7-resources/hl7-dft-detail-financial-transaction) – Detailed financial transaction - [MDM](https://corepointhealth.com/resource-center/hl7-resources/hl7-mdm-message) – Medical document management - MFN – Master files notification - [ORM](https://corepointhealth.com/resource-center/hl7-resources/hl7-orm-message) – Order (Pharmacy/treatment) - [ORU](https://corepointhealth.com/resource-center/hl7-resources/hl7-oru-message) – Observation result (unsolicited) - QRY – Query, original mode - RAS – Pharmacy/treatment administration - [RDE](https://corepointhealth.com/resource-center/hl7-resources/hl7-rde-message-pharmacy) – Pharmacy/treatment encoded order - RGV – Pharmacy/treatment give - [SIU](https://corepointhealth.com/resource-center/hl7-resources/hl7-siu-message) – Scheduling information unsolicited