The Ancillary Services Review Program in Massachusetts. Experience of the 1982 pilot project.

In 1982, a pilot program to review the use of ancillary services in 25 hospitals was implemented in Massachusetts. The program analyzed hospital claims data to generate statistical models of ancillary use. Hospitals where the model demonstrated substantially higher use were subjected to clinical review. For laboratory services, three of the four hospitals reviewed were found to have more than 30% inappropriate use of selected tests, compared with approximately 20% in other hospitals. For cardiac services, three hospitals were each found to have more than 30% inappropriate use of selected tests, compared with 16% in other hospitals. When informed of these results, five of the six hospitals used them to develop plans of corrective action. Based on the pilot program, a review of ancillary services began in all Massachusetts hospitals in 1983.