California Code, Insurance Code - INS § 10126.6

(a) Every policy of disability insurance that provides hospital, medical, or surgical coverage under a health benefit plan, defined in subdivision (a) of Section 10198.6, that provides coverage for emergency health care services, that is issued, amended, delivered, or renewed in this state on or after January 1, 1999, shall include coverage for emergency medical transportation services, as defined in subdivision (b).  This coverage shall be provided without regard to whether the emergency provider has a contractual arrangement with the insurer or whether there was prior authorization, subject to the terms and conditions of the policy.

(b) For purposes of this section, “emergency medical transportation services” means ambulance services provided through the “911” emergency response system.