According to "The Confederacy, A Guide to the Archives of the Government of the Confederate States of America," the Stout
collection at the University of Texas does not contain register of patients after June, 1864 for:

Fairground Hospital 2 and Receiving & Distributing Hospital, Atlanta.

They do hold a register of patients at Fairground Hospital No. 1 from Sept. 22, 1863-Mar. 29, 1865. I would believe this may
be an error and perhaps Sept. 22, 1864, as they also show a register for the period Apr. 1, 1863-June 24, 1864

There is no register for the General Hospital, Atlanta or Empire Hospital, Macon.

There is a list of patients at the Ocmulgee Hospital, Macon for the period Jan. 21, 1864-Apr. 30, 1865. These appear to be only at the
National Archives.

George Martin