Final answer:
The statement is true; modifier 24 is used for an unrelated Evaluation and Management service during a postoperative period to signify it as a separate service from the original operative procedure's care.
Step-by-step explanation:
The statement is true. When a patient is seen for an unrelated Evaluation and Management (E&M) service during a postoperative period and the service provided is not related to the original procedure, modifier 24 is used. This modifier is appended to the E&M service code to indicate that it is a separate service that is not included in the postoperative care.