Code of Massachusetts Regulations
258 CMR - BOARD OF REGISTRATION OF SOCIAL WORKERS
Title 258 CMR 22.00 - Confidentiality of Client Communications and Records
Section 22.05 - Client's Right to Prevent Disclosure of Communications In Certain Proceedings

A social worker shall not disclose or testify about any client communications or information which relate to the diagnosis or treatment of the client's mental, emotional or behavioral disorder, condition or addiction in any judicial, legislative or administrative proceeding without the valid written consent of that client, unless such disclosure or testimony is required or authorized by M.G.L. c. 112, § 135B or is ordered by a court of competent jurisdiction.