00667
Primary Key Value - MFE
2011-03-06
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 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.