Rao, a 1981 batch officer of Indian Audit and Account Service, is presently working as Additional CAG.
The Appointments Committee of the Cabinet has approved the appointment of Rao as Deputy CAG with effect from July 1, 2016, an order issued by Department of Personnel and Training said.
The Comptroller and Auditor General is country's top auditing body.
In another order, the ACC has appointed A K Mittal as Member (Engineering) in Railway Board here.
Mittal, who belong to Indian Railway Service of Engineers, is presently General Manager of East Central Railway.