
Labor Code § 4600(g)(2)(A) states, "Unless otherwise indicated in this section, a physician providing treatment under Section 4600 shall send any request for authorization for medical treatment, with supporting documentation, to the claims administrator for the employer, insurer, or other entity according to rules adopted by the administrative director." The statute directs that a request for authorization for medical treatment (RFA) must be sent to a claims administrator, rather than somewhere else, although the claims administrator may designate where the RFA is sent (CCR 9792.6.1(t)(3)).