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SI - sequence ID

HL7 Component Table - SI - sequence ID
Seq# Description Implement Flags Cardinality Length C.LEN Vocabulary Data Type
SI
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.