The DRG/OMT [Diagnosis-Related Groups/Osteopathic Manipulative Treatment] Master Matrix is a tabulated guideline for helping osteopathic physicians and hospitals document their unique form of health-care. The DRG/OMT Master Matrix is a quality management tool designed for osteopathic physician care of hospitalized patients. It furnishes a mechanism for relating various diagnostic entities to probable areas of somatic dysfunction. This matrix and the accompanying patient record aid the physician in recording diagnosis and treatment, thus providing the hospital with documentation of osteopathic patient care's competitive advantage. In a hospital record review, OMT use increased from 5% to 15% of patients after the DRG/OMT Master Matrix was introduced.