(a) Age.--An individual who is under 21 years of age may not be a caregiver unless a sufficient showing, as determined by the department, is made to the department that the individual should be permitted to serve as a caregiver.

(b) Changing caregiver.--If a patient wishes to change or terminate the designation of the patient's caregiver, for whatever reason, the patient shall notify the department as soon as practicable. The department shall issue a notification to the caregiver that the caregiver's identification card is invalid and must be promptly returned to the department.

(c) Denial in part.--If an application of a patient designates an individual as a caregiver who is not authorized to be a caregiver, that portion of the application shall be denied by the department. The department shall review the balance of the application and may approve that portion of it.