GA Code §33-20A-62(a-b)

(a) No carrier, plan, network, panel, or any agent thereof may conduct a postpayment audit or impose a retroactive denial of payment on any claim by any claimant relating to the provision of health care services that was submitted within 90 days of the last date of service or discharge covered by such claim unless:

(1) The carrier, plan, network, panel, or agent thereof has provided to the claimant in writing notice of the intent to conduct such an audit or impose such a retroactive denial of payment of such claim or any part thereof and has provided in such notice the specific claim and the specific reason for the audit or retroactive denial of payment;

(2) Not more than 12 months have elapsed since the last date of service or discharge covered by the claim prior to the delivery to the claimant of such written notice; and

(3) Any such audit or retroactive denial of payment must be completed and notice provided to the claimant of any payment or refund due within 18 months of the last date of service or discharge covered by such claim.

(b) No carrier, plan, network, panel, or any agent thereof may conduct a postpayment audit or impose a retroactive denial of payment on any claim by any claimant relating to the provision of health care services that was submitted more than 90 days after the last date of service or discharge covered by such claim unless:

(1) The carrier, plan, network, panel, or agent thereof has provided to the claimant in writing notice of the intent to conduct such an audit or impose such a retroactive denial of payment of such claim or any part thereof and has provided in such notice the specific claim and the specific reason for the audit or retroactive denial of payment;

(2) Not more than 12 months have elapsed since such claim was initially submitted by the claimant prior to the delivery to the claimant of such written notice; and

(3) Any such audit or retroactive denial of payment must be completed and notice provided to the claimant of any payment or refund due within the sooner of 18 months after the claimant’s initial submission of such a claim or 24 months after the date of service.