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|Data Element Name: Unique Personal Identifier||File Location: Master|
|SPARCS Data Element Number: 111|
|Record Positions: 1847 - 1856||Format-Length: A/N - 10|
|Effective Date: 1/1/1995||Revision Date:|
|Deniable Data Element: Yes - See Appendix Z for release restrictions.|
A composite field composed of portions of the patient's last name, first name, and social security number. This field, in conjunction with the Patient Birth Date (Data Element 11) and Patient Sex (Data Element 10), is designed to provide matching criteria for individual patient records for longitudinal analysis without compromising the confidentiality of the record.Codes and Values:
- The source of the characters in the 10 positions were:
1-2 First 2 characters of the patient's last name
3-4 Last 2 characters of the patient's last name
5-6 First 2 characters of the patient's first name
7-10 Last 4 digits of the patient's social security number.
- If this field was not applicable, it contains blanks.
- Must have been a valid entry.