CISA Practice Test 12

Billing data conversion

A regional hospital is converting its patient billing data from a legacy system to a new billing platform over one weekend. The vendor wrote the extract and load programs, and the hospital's IT staff reviewed them before the test run.

The conversion plan states that completeness will be confirmed by comparing record counts before and after the load. Where a legacy record lacks a value that the new platform requires, a default value approved by the head of billing, as data owner, will be applied. A test conversion rejected 2% of records; billing clerks will re-key these after go-live, with a supervisor verifying each entry. To free storage, the legacy database will be deleted as soon as the load finishes; the project manager notes that a full backup of it will be written to tape first and kept for 30 days.