(a) This article does not prevent the governing body of a hospital from holding an executive session during a regular, special or emergency meeting, after the presiding officer has identified the authorization under this article for the holding of the executive session and has presented it to the governing body and to the general public, but no official action may be made in the executive session, except as is necessary:
(1) To protect the confidentiality of protected health information as defined by the Health Insurance Portability and Accountability Act of 1996;