ICD-9 was outdated because there were more codes than procedures available, and to document for procedures without an ICD-9 code, unspecified codes were utilized which did not fully capture the procedures or the work involved in turn affecting reimbursement. Hence, ICD-10 was introduced to simplify the procedures with unknown codes and unify the standards closer to world standards (ICD-11). One of the main parts of Revenue Cycle HIT is charge capture, it utilizes codes to capture costs for reimbursements from different payers, such as CMS.[42]