The refrigerator water line to the ice maker began banging at intervals outside the refrigerator between the refrigerator and the wall. It was not related to any other faucet being turned off or on or the toilet flushing. I turned off the water at the faucet the line connects to and the banging stopped. It is about time to change the water filter. Is that the cause of the water line banging?

In answer to my question, we changed the water filter in the refrigerator and the banging has stopped.