The Healthcare Cost and Utilization Project provides data derived from the records of hospitals and other providers. These series feature statistical summaries of cases including information about diagnoses and procedures. [More information about this survey included a detailed explanation of it purposes, methods and limitations can be found at on their website.]
The project is a partnership between the federal government’s Agency for Healthcare Research and Quality, state governments and industry. The resulting databases
“... bring together the data collection efforts of State data organizations, hospital associations, private data organizations, and the Federal government to create a national information resource of patient-level health care data. … to enable research on … cost and quality of health services, medical practice patterns, access to health care programs, and outcomes of treatments at the national, State, and local market levels.”
The HCUP website includes a description of the project, its databases and links to specialized table generation tools.
The HCUPnet tool provides access to much of the information they collect and report.