The OIG sent teams of experts to review medical records of 780 Medicare beneficiaries hospitalized in during the month of October, 2008.
They found that 60% of adverse and temporary events nationally occurred at hospitals in states with reporting systems. But only 12% of the events met state requirements for reporting. Additionally, hospitals reported only 1% of the events.
The report, sent to Acting Administrator for the Centers for Medicare & Medicaid Services Marilyn Tavenner, follows a series of reports on the occurrence of adverse events, hospitals' recognition of those events, and the reporting of them.
Recently, the OIG said that it found that about 27% of Medicare beneficiaries who were hospitalized in October of 2008 experienced harm from medical care. About half of those involved "prolonged hospitalization, permanent disability, life-sustaining intervention or death," while another half involved temporary harm, in which an intervention was required, but for which the harm did not last.