Any continued medical certification shall be submitted to the department within 20 days of the date the claimant is issued a notice of final payment or departmental request for additional medical certification. The 20-day time limit shall be extended by the department upon a showing of good cause.
Source:
Section 2706.2, https://leginfo.legislature.ca.gov/faces/codes_displaySection.xhtml?lawCode=UIC§ionNum=2706.2..