Two months ago Brunhes, our 4 year old domestic medium hair cat, was admitted to the ICU with liver failure. We had them try everything and after a week, things seemed dire and he was getting worse. At the beginning of the second week, he broke a fever which allowed them to treat him with a different set of antibiotics and he made an amazing recovery! After one more week in the ICU/IMC (intermediate care) he came home to us.
Two weeks in the ICU is extremely expensive (not to mention stressful) but it helped a lot to know we would have insurance reimburse us. After the vet hospital faxed their 500 page medical report for his stay, it only took us about a month to get our claim paid. Well worth it!