Final answer:
Serial-unit numbering is the numbering system used in healthcare where a patient is assigned a new number with each visit and their older medical records are brought forward to the newest number and location.
Step-by-step explanation:
The numbering system in which a patient is assigned a new number with each visit and the patient's older medical records are brought forward to the newest number and location is called Serial-unit numbering. In this system, the patient's records are organized chronologically, allowing healthcare providers to easily access the patient's medical history. For example, if a patient visits a healthcare facility multiple times, their records from each visit will be combined under a single, unique serial number.