When in the possession of the local agency, applications, claims and all individual records of persons entitled to benefits from any policies or plans established pursuant to this article shall be confidential and shall not be disclosed to anyone except to the extent expressly authorized in such application, claims, policies or plans or insofar as it may be necessary for the administration of this article, the policy or plan, or other policies or plans affecting a person covered under the policy or plan, or upon order of a court of competent jurisdiction.