00667
Primary Key Value - MFE
2000-10-28
Definition: This field uniquely identifies the record of the master file (identified in the MFI segment) to be changed (as defined by the record-level event code). The data type of field is defined by the value of MFE-5 - Value type, and may take on the format of any of the HL7 data types defined in HL7 table 0355 - Primary key value type. The PL data type is used only on Location master transactions.
The following exception to the use of the CE data type is deprecated in v 2.3.1, and left only to satisfy backwards compatibility. When the CE data type is used, the first component of this CE data field carries an optional subcomponent, the application ID, that uniquely identifies the application responsible for creating the primary key value. The application ID subcomponent can be used to guarantee uniqueness of the primary key across multiple applications.