Health Insurance Portability and Accountability Act (HIPAA)
HIPAA is codified at 42 U.S.C. Sect. 1320d-6.
The implementing regulations can be found at 45 C.F.R. Sects. 160, 164.
Department of Health and Human Services Office of Civil Rights HIPAA page
Medical privacy vs. the public interest: A reporter's guide, Reporters Committee for Freedom of the Press
RTNDA's Guide to Health Coverage under HIPAA
"Understanding HIPAA: A brief overview — A primer by the Freedom of Information & Advocacy Committee of the Association of Health Care Journalists"