Section 515A.2 - Definitions - scope of chapter1. As used in this chapter: a."Commissioner" means the commissioner of insurance.b."Insurance" means workers' compensation liability insurance.c."Insurer" means an insurer which issues a policy of workers' compensation liability insurance.d."Policy" means a policy of workers' compensation liability insurance.e."Rate" means a rate for workers' compensation liability insurance.f."Rate filing" means a rate filing by a rating organization or an insurer.g."Rating organization" means a workers' compensation rating organization licensed pursuant to this chapter.h."Schedule rating plan" means a rating plan by which an insurer increases or decreases workers' compensation rates to reflect the individual risk characteristics of the subject of the insurance.2. This chapter applies only to workers' compensation liability insurance.