Wash. Rev. Code § 51.32.195 (2026)

On any industrial injury claim where the self-insured employer or injured worker has requested a determination by the department, the self-insurer must submit all medical reports and any other specified information not previously submitted to the department. When the department requests information from a self-insurer by certified mail, the self-insurer shall submit all information in its possession concerning a claim within ten working days from the date of receipt of such certified notice.