This process map/“swim lane” diagram can be customized for each site that allows QI and clinical personnel to visualize and document a shared understanding of the envisioned ideal medication reconciliation process, including everyone’s role throughout the hospitalization and discharge. ED, emergency department, PAML, preadmission medication list; BPMH, best possible medication history; PAA, planned action on admission; DML, discharge medication list. (Available in color in online article.)