Which of the following actions is not considered Fraud?

The action referred to as confidential well-check services is not considered fraud because it typically involves legitimate health care services conducted in a manner that respects patient privacy and confidentiality. Well-check services are preventive measures aimed at monitoring an individual's health and ensuring that any potential health issues are addressed early on.

In contrast, actions such as falsifying signatures for prescription refills, using personal medical information to obtain prescriptions unlawfully, and prescription splitting for monetary gain all involve deception or manipulation of the health care system for unlawful benefits. These actions compromise the integrity of the healthcare services and violate legal and ethical standards, thus qualifying as fraud. The focus of well-check services is on providing care rather than exploiting the system, which is why it stands apart from the other listed actions.