Hundreds of confidential documents from the Cleveland Clinic littered Interstate 77 on Tuesday after blowing off the back of a garbage truck.
Clinic spokeswoman Eileen Sheil said "almost all" of the 300 to 500 documents were recovered from the area of Fleet Avenue.
The documents are employees' performance reviews and patients' results from the cardiology laboratory, Sheil said.
The federal Health Insurance Portability and Accountability Act requires patient documents to be shredded, which these were not.
"Procedures were not followed," Sheil said. Clinic officials are investigating who was responsible.