The Demo site for our new HL7 Version 2+ (plus) Standard
visit the hl7 website

Draft Website - For Review Purposes Only

SI - sequence ID

HL7 Component Table - SI - sequence ID
Seq# Description Implement Flags Cardinality Length C.LEN Vocabulary Data Type
1 Sequence ID SHALL = [0..1] [1..4]   4

Definition: A non-negative integer in the form of a NM field. The uses of this data type are defined in the chapters defining the segments and messages in which it appears.

Minimum Length: 1

Maximum Length: 4.

This allows for a number between 0 and 9999 to be specified.