Introducing Iguana 4.0
We’re very proud to officially announce the launch of Iguana 4.0. This is a major milestone for all of us at iNTERFACEWARE. With months of design, development, QA and stress-testing behind us, everyone is very excited to see just how quickly – and easily – our customers have been taking to the new release. Want […]
Understanding HL7 Messages
What are HL7 messages? HL7 Messages are used to transfer electronic data between disparate healthcare systems. Each HL7 message sends information about a particular event such as a patient admission. This section describes the contents of an HL7 message and how an HL7 message is organized. The following topics are covered: The components of an […]
HL7 Delimiter Characters
As you have seen in the previous sections, certain special characters separate one composite in a segment from another, or separate one sub-composite from another. These special characters are known as delimiter characters. This section describes delimiter characters in more detail, how to use escape characters to include a delimiter character as part of a […]
Delimiter Escape Sequences
If an HL7 message contains one of the special delimiter characters as part of its message content, you can use a special escape sequence to specify the delimiter character. This ensures that any application that processes HL7 messages can always distinguish between a delimiter character and a character that is part of the message text. […]
Determining the HL7 Message Type
Each HL7 message is of a particular message type. This HL7 message type indicates what health-related information is being provided in this message. The message type also determines what segments can be included as part of the message. To determine the message type of an HL7 message, examine its MSH segment. The message type is […]
Repeating and Optional Segments
Some HL7 message types allow a segment to be repeated one or more times, or allow a segment to be optionally present. For example, repeating segments are useful for messages that contain contact information, as they make it possible to provide more than one contact. For instance, multiple NK1 (Next of Kin) segments may be […]
Custom Segments: HL7 Z-segments
If an HL7 message contains customized data that cannot be included in any segment that is defined for its message type, you can create a custom segment to transmit this data. By convention, all custom segments begin with the letter Z. For example, a ZPD segment could be created to contain customized patient demographics information. […]
Present but Null Fields
In segments, it is important to note that there is a difference between fields that have no value defined for them and fields that have a null value defined for them. If a field is not defined, there is nothing between the two | characters that delimit the field: OBR||||||||| A null value is indicated […]
HL7 Versions
To make it easier to send and receive health-care information, the HL7 organization has defined a standard that specifies what types of HL7 messages can be sent, what segments can be included in these messages, and what fields can be included in their segments. The HL7 standard is constantly evolving. To date, the HL7 committee […]
HL7 Version 2.X
Version 2 of the HL7 standard is the version that is currently in common use. It has been designed to always be backward compatible. For example, version 2.6 of the standard is compatible with version 2.5. This ensures that existing applications that use the standard do not have to be constantly updated to match the […]
Enjoying this blog?
Sign up to receive healthcare integration news, just like this, from iNTERFACEWARE Inc.
iNTERFACEWARE needs the contact information you provide to us to contact you about our products and services. You may unsubscribe from these communications at any time. For information on how to unsubscribe, as well as our privacy practices and commitment to protecting your privacy, please review our Privacy Policy.