HL7 v2 Data Catalog

Overview

The HL7 Data Catalog enables discovering and understanding HL7 v2 messaging artifacts used in healthcare.

It contains specifications for all major HL7 v2 messages including:

• ADT - Admit/discharge/transfer messages like ADT^A01, ADT^A02
• ORM - Order-related messages like ORM^O01, ORM^O02
• ORU - Observation result messages like ORU^R01
• SIU - Scheduling messages like SIU^S12, SIU^S13
• MDM - Medical document messages like MDM^T01, MDM^T02
• MAR - Medication messages like BAR^P01, BAR^P02
• QRY - Query messages like QRY^A19, QRY^PC4

For each message type, the Data Catalog provides:

• Message structure - Details on segments, fields, data types
• Use Cases - Recommended guides for usage

The catalog allows developers to lookup message specs, understand how messages should be used, and access tools to validate that messages are built correctly.

By leveraging the HL7 v2 artifacts in the Data Catalog, developers can build applications that create, send, and consume interoperable HL7 v2 messages for healthcare workflows.