For the purposes of this subdivision, "statement" includes, but is not limited to, a notice, proof of injury, bill for services, payment for services, hospital or doctor records, X-ray, test results, medical-legal expense as defined in Section 4620 of the Labor Code, other evidence of loss, injury, or expense, or payment.
The existence of any fact that would subject a person to a penalty enhancement shall be alleged in the information or indictment and either admitted by the defendant in open court, or found to be true by the jury trying the issue of guilt or by the court where guilt is established by plea of guilty or nolo contendere or by trial by the court sitting without a jury.
Ca. Ins. Code § 1871.4