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A.1 INTRODUCTION

The HL7 specifications were prepared using a data dictionary database. Certain outputs from that database are included in the chapters that define the abstract messages. These outputs list the data fields and field notes associated with a segment. Other Data Dictionary outputs are included here to comprise appendix A. These include:

• a list of the message types that comprise the HL7 protocol

• a list of the segment IDs and segment names

• a list of each data element organized alphabetically by name

• a list of the IDs and names of all tables of coded values

• a cross reference of table IDs vs. data element names

• a list of the contents of each table

• a list of all data element names.

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