Amended June 5, 2015 Steven A. Mueller, Bradley J. Brown, Mark A. Kruse, Kevin D. Miller, and Larry E. Phipps, on Behalf of Themselves and Those Like Situated v. Wellmark, Inc. D/B/A Wellmark Blue Cross and Blue Shield of Iowa, an Iowa Corporation, and Wellmark Health Plan of Iowa, Inc., an Iowa Corporation

MANSFIELD, Justice.

Wellmark, Inc. is an Iowa-based health insurer that belongs to the national Blue Cross and Blue Shield (BCBS) network. Wellmark has contracted with health care providers in Iowa to provide services at certain reimbursement rates. By agreement, Wellmark makes those rates available both to self-insured Iowa plans that it administers and to out-of-state BCBS affiliates when those entities provide coverage for services provided in Iowa.

This appeal presents the question whether the foregoing agreements between Wellmark and self-insuring employers and between Wellmark and…