My husband was in the hospital for a MS exacerbation, which caused a bowel blockage. He was rushed to the hospital in a ambulance. He was in the hospital for 5 days then went to one of the best rehabilitation hospital in Cincinnati, for 4 days. My husband has Cigna Medicare Advantage. Almost every claim that was submitted to Cigna was asked to be resubmitted for missing or correct information. I can not believe the hospitals and doctor submitted these claims wrong. It took 7 months to get the ambulance paid.