Final answer:
The display name used in the mobile app for a patient's Health Maintenance topics is 'Health Maintenance.'
Step-by-step explanation:
In the mobile app for a patient's Health Maintenance topics, the display name used is 'Health Maintenance'. This feature allows patients to access and manage their health maintenance topics, such as vaccinations, screenings, and preventive care. For example, a patient may see a list of recommended immunizations or screenings they need based on their age and medical history.