Employer objections to the treating physician's recommendation for
spinal surgery shall be subject to subdivision (b), and after denial
of the physician's recommendation, in accordance with Section 4610.
If the employee objects to a decision made pursuant to Section 4610
to modify, delay, or deny a treatment recommendation, the employee
shall notify the employer of the objection in writing within 20 days
of receipt of that decision. These time limits may be extended for
good cause or by mutual agreement. If the employee is represented by
an attorney, a medical evaluation to determine the disputed medical
issue shall be obtained as provided in Section 4062.2, and no other
medical evaluation shall be obtained. If the employee is not
represented by an attorney, the employer shall immediately provide
the employee with a form prescribed by the medical director with
which to request assignment of a panel of three qualified medical
evaluators, the evaluation shall be obtained as provided in Section
4062.1, and no other medical evaluation shall be obtained.