4.0 Change History

The following sections provide the history of all changes made to this document since the last publication.

4.1 May 11, 2007

This document is now Released for Implementation.

4.2 December 5, 2007

4.2.1 General Updates

Updated to new template

Added support for provider data pseudonymization

Generalized term patient to person

4.2.2 Section 2.1

Updated context to include Quality in addition to Public Health

Updated the standard Use Case as a general person pseudonymization Use Case

Added Quality Extension

4.2.3 Section 2.2.2

Added constraints to the Patient Identity Feed and PIX Query for support of provider pseudonymization

4.3 December 13, 2007

Upon approval by the HITSP Panel on December 13, 2007, this document is now Released for Implementation.

4.4 July 11, 2008

Updated to place standards into 3 categories: Regulatory, Selected, and Informative References

4.5 August 20, 2008

This document has been modified to reflect the updated HITSP approach to categorizing standards as Regulatory Guidance, Selected Standards, and Informative References.

The following standard has been designated as regulatory guidance:

Health Insurance Portability and Accountability Act (HIPAA) -- Administrative Simplification

The following standard has been designated as informative reference:

Health Level Seven (HL7) Version 2.5

The following standard has been added as informative reference:

Integrating the Healthcare Enterprise (IHE) IT Infrastructure Technical Framework (ITI-TF) Revision 4.0, Volume 2 Transactions, Appendix M Using Patient Demographics Query in a Multi-Domain Environment

4.6 August 27, 2008

Upon approval by the HITSP Panel on August 27, 2008, this document is now Released for Implementation.

4.7 June 30, 2009

Minor editorial changes were made to this document. Boilerplate text was removed for simplification. The term actor was replaced with interface.

4.8 July 8, 2009

Upon approval by the HITSP Panel on July 8, 2009, this document is now Released for Implementation.



[1] Future considerations are necessary to generalize the purpose, the types of HL7 Feeds that may be leveraged, and to harmonize with the HITSP Security and Privacy TC ongoing and pending efforts in identity management.

[2] Optionality = R for Required, R2 for Required if known, O for Optional, or C for Conditional. Conditional footnotes are further described below.

[3] HITSP references HL7 2.5.1 messaging for lab results reporting and HL7 2.5 for other messages. Future maintenance work will move toward referencing a single HL7 version across HITSP documents.