00667
Primary Key Value - MFE
2015-07-13
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 in Chapter 2C, Code Tables. The PL data type is used only on Location master transactions.
The repetition of the primary key permits the identification of an individual component of a complex record as the object of the record-level event code. This feature allows the Master Files protocol to be used for modifications of single components of complex records. If this field repeats, the field MFE-5 - Value Type must also repeat (with the same number of repetitions), and the data type of each repetition of MFE-4 - Primary Key Value - MFE is specified by the corresponding repetition of MFE-5 - Value Type.