Except for records subject to health carrier grievance reporting and record keeping requirements established under AS 21.07.005, an insurer shall maintain a complete record of all the complaints received by the insurer since the date of the insurer's last market conduct examination under AS 21.06.120 or for four years, whichever occurs first. This record must indicate the total number of complaints, the classification of each complaint by line of insurance, the nature of each complaint, the disposition of each complaint, and the time it took to process each complaint. For purposes of this section, “complaint” means any written communication primarily expressing a grievance.