The Commissioner shall promulgate rules and regulations which define the following terms: risk adjusted hospital readmission rates, absolute hospital readmission rates, risk adjusted hospitalization rates, absolute hospitalization rates, admission volume, utilization volume, risk adjusted rates of adverse events, risk adjusted total cost of care, and absolute relative total cost of care. Such terms shall be defined in accordance with federal law or regulation or as otherwise determined necessary by the Commissioner; and
OCGA § 33-24-59.27