California Code, Insurance Code - INS § 10089.72

(a) If, after the department's intervention, the insurer and the insured do not reach agreement, the department may notify the insurer that in order to avoid referral to mediation, the insurer shall have 28 calendar days to resolve the dispute, unless the department, for good cause, extends the period by an additional 7 calendar days.

(b) The department may not refer a claim or dispute to mediation unless the amount claimed by the insured exceeds seven thousand five hundred dollars ($7,500) and the amount in dispute exceeds two thousand dollars ($2,000).