(b) Interdepartmental communication of confidential information. -- Notwithstanding any provision of this code to the contrary, information that by statute is confidential in the possession of any division, agency, board, commission or office of the department of revenue may be disclosed to the secretary, or an employee in the office of the secretary, who must safeguard the information and may not further disclose the information except under the same conditions, restrictions and limitations applicable to the administrator of the agency, board, commission, division or office of the department in whose hands the information is confidential: Provided, That nothing contained in this section shall be construed to require the disclosure to the secretary or to an employee in the office of the secretary of individually identifiable health care or other information that, under federal law, may not be disclosed by the administrator without subjecting the administrator or the agency, board, commission, division or office to sanctions or other penalties by the United States or any agency thereof. This confidentiality rule is a specific exemption from disclosure under article one, chapter twenty-nine-b of this code.