Final answer:
Charging patients for missed appointments is considered unethical according to the American Psychiatric Association's code of ethics.
Step-by-step explanation:
According to the American Psychiatric Association's code of ethics, charging patients for appointments that they do not keep is considered unethical. This is because the code emphasizes the importance of prioritizing the well-being and autonomy of the patient. The policy of charging fees for missed appointments can create financial barriers to accessing mental health care and may discourage patients from seeking help when they need it.