April      14, 2003

Privacy - all covered entities except small health plans.

April      16, 2003

Electronic Health Care Transactions and Code Sets

October 16, 2003

Electronic Health Care Transactions and Code Sets - all entities that have an extension + small health plans.

April      14, 2004

Privacy - small health plans.

July       30, 2004

Employer Identifier Standard - except small health plans.

August    1, 2005

Employer Identifier Standard - small health plans