514F.2  Utilization and cost control.
  Nothing contained in the chapters of Title XIII, subtitle 1, of the Code shall be construed to prohibit or discourage insurers, nonprofit service corporations, health maintenance organizations, or self-insurers for health care benefits to employees from providing payments of benefits or providing care and treatment under capitated payment systems, prospective reimbursement rate systems, utilization control systems, incentive systems for the use of least restrictive and least costly levels of care, preferred provider contracts limiting choice of specific provider, or other systems, methods or organizations designed to contain costs without sacrificing care or treatment outcome, provided these systems do not limit or make optional payment or reimbursement for health care services on a basis solely related to the license under or the practices authorized by chapter 151 or on a basis that is dependent upon a method of classification, categorization, or description based upon differences in terminology used by different licensees under the chapters of Title IV, subtitle 3, of the Code in describing human ailments or their diagnosis or treatment.
86 Acts, ch 1180, §10