Health insurance claims data are an increasingly widespread and valuable source of information for use in analyzing the healthcare space. The shift from pen-and-paper to electronic claims submissions processes has not only sped up the claims adjudication for providers and payors, but it has also made the transfer and storage of substantial collections of claims-related data possible for other uses. With this data and requisite computing power to process it, entities like researchers, policy experts and financial analysts have the ability to quantitatively measure the shifting trends in delivery of care to patients over time. This report presents an overview of health insurance claims data, including some of the specific sources integrated into Marwood’s analytics platform, and the possibilities for this data understanding the complexities of a full patient encounter when undergoing a common esophagus endoscopy procedure.