Ga. Code § 33-20E-15
Each party shall submit one proposed payment amount to the arbitrator. The arbitrator shall pick one of the two amounts submitted and shall reveal that amount in the arbitrator's final decision. The arbitrator may not modify such selected amount. In making such a decision, the arbitrator shall consider the complexity and circumstances of each case, including, but not limited to, the level of training, education, and experience of the relevant physicians or other individuals at the facility who are licensed or otherwise authorized in this state to furnish healthcare services and other factors as determined by the Commissioner through rule. The arbitrator's final decision shall be in writing and shall describe the basis for such decision, including citations to any documents relied upon. Notwithstanding Code Section 33-20E-14, such decision shall be made within 60 days of the Commissioner's referral. Any default or final decision issued by the arbitrator shall be binding upon the parties and is not appealable through the court system.
OCGA § 33-20E-15