https://www.efanniemae.com/sf/guides/ssg/relatedsellinginfo/appcode/pdf/air.pdf
The industry has long been awaiting a replacement for the Home Valuation Code of Conduct (HVCC). On Friday, Fannie Mae and Freddie Mac issued new Appraiser Independence Requirements to supplant the controversial HVCC, but both GSEs say the new appraiser rules, effective immediately, "make no significant changes to core principles of the HVCC." Fannie and Freddie say they will continue to review the appraisal rules to address issues relating to conflicts of interests and fee disclosure by appraisal management companies.
http://www.dsnews.com/articles/gses-release-appraiser-independence-rules-to-replace-hvcc-2010-10-15