1. Detailed chronological recording of pertinent facts and observations about a patient’s health as seen in chart notes and medical reports, such as the patient’s condition, treatment, and progress. These entries are required in the medical record to support charges submitted to third-party payers, as well as prescription refills, telephone calls, and other pertinent data. 2. Act of creating records to substantiate the performance of an action (e.g., financial records). 3. Claim forms, written communications, telecommunications, explanation of benefit documents, notes, transactions, and work papers that are relevant to a claim.