The use of billing data in quality assurance.
D000066:Accounting; D003133:Commission on Professional and Hospital Activities; D003954:Diagnostic Services / Q000145:classification; D008331:Management Information Systems / Q000191:economics*; D010593:Pharmaceutical Services / Q000145:classification; D010865:Pilot Projects; D011785:Quality Assurance, Health Care / Q000379:methods*; D014481:United States