
There are many different types of HL7 messages, each with its own unique purpose and message contents. Below is a list of the common HL7 message types.
There are over 80 different HL7 message types, but here are some of the most commonly used ones. Click any type for details:
| Message Type | Description |
|---|---|
| HL7 ADT | Admit, Discharge and Transfer |
| HL7 ORM | Order Entry |
| HL7 ORU | Observation Result |
| HL7 MDM | Medical Document Management |
| HL7 DFT | Detailed Financial Transactions |
| HL7 BAR | Billing Account Record |
| HL7 SIU | Scheduling Information Unsolicited |
| HL7 RDS | Pharmacy/Treatment Dispense |
| HL7 RDE | Pharmacy/Treatment Encoded Order |
| HL7 ACK | Acknowledgement Message |
For more on how Iguana supports HL7 message workflows, see How Iguana Works with HL7 Messages .
From HL7 ADT (patient demographics) to HL7 ACK (protocol acknowledgements), HL7 messages cover many use cases, each with its own segments and fields. As messages move through your healthcare ecosystem, each type requires specific handling to ensure data is routed, received, and sent correctly between systems.
How does Iguana support different HL7 message types?
Whether you handle multiple message types or focus on just one, Iguana makes processing HL7 straightforward. Developed by iNTERFACEWARE, Iguana can transform the format, structure, and values of HL7 messages (both inbound and outbound), so you can manipulate any HL7 message type with ease.