Moon face is a sign of renal failure?

Yes, moon face is a sign of renal failure.

Moon face is a condition characterized by a round and puffy face. It is a common sign of Cushing's syndrome, which is a disorder that occurs when the body produces too much of the hormone cortisol. Cortisol is produced by the adrenal glands, which are located on top of the kidneys. When the kidneys are not functioning properly, they cannot remove cortisol from the body effectively, which can lead to Cushing's syndrome. Moon face is one of the most common signs of Cushing's syndrome, along with other symptoms such as weight gain, high blood pressure, and diabetes.