I cannot answer your question, but I do find that the National Archives Record Group 109 holds a Way Hospital register of patients for the period January 7 thru April 1,1865.

They also have for the Yandell Hospital of Meridian a register of patients for the period April 1 thru 12, 1865
[The Confederacy, A Guide to the Archives of the Government of the Confederate States of America, p. 186]