According to https://news.ycombinator.com/item?id=18332918 (surprisingly, on the SERP for "voluntary parting"), that's an insurer's term, not a lawyer's—but the police might still refuse to take a police report anyway.

(Though I do wonder if "Hi, I'm a photographer and I lent my camera on the internet" and "Hi, I'm with the loss department of a major national rental car company" get you different responses from the police for reasons entirely unrelated to the legal status of the misdeed.)