Swordfish movie body question, but more science then movie related. Spoilers

I was watching Swordfish (2001) last night. At the end Travolta escapes by providing a body double to fake his death. They mention that the dental records matched and the body was partially burned. But the hacker had spotted the body in the wine cooler several days before. Wouldn’t the coroner be able to determine that the body had been iced for a length of time?