What is Data Migration?

Data Migration Definition

Data Migration is the "High-Wire Act" of IT projects. For Health System Executives, a successful migration is the key to a merger or an EHR upgrade. If it fails, doctors lose access to patient histories, and the revenue cycle grinds to a halt. Operationally, it follows the ETL process: Extract (pull data from the old system), Transform (clean and reformat it), and Load (put it into the new system). Strategically, migration is the best time to perform "Data Hygiene"—deleting duplicates and fixing errors so that the new system starts with a "Clean Slate." Because it involves PHI, the process must be heavily encrypted and audited to maintain HIPAA compliance.

FAQs

What is a "Big Bang" migration?

Moving all data at once in a single event, usually over a weekend. It's faster but higher risk if something goes wrong.

What is a "Phased Migration"?

Moving data in stages (e.g., one department at a time). It’s slower and more expensive but allows for easier troubleshooting.

What is "Data Mapping"?

The process of ensuring that a field in the old system (e.g., "DOB") correctly aligns with the corresponding field in the new system (e.g., "Date_of_Birth").