Which form must the physician complete within 24 hours of a patient's admission?

The correct choice is the SF 506 Clinical Record - Physical Examination. This form is crucial as it provides a comprehensive assessment of the patient’s physical health upon admission to a mental health facility. It is essential for ensuring that any underlying medical conditions are identified and managed, which can significantly influence the patient's overall treatment plan and mental health care.

Completing this form within 24 hours of admission aligns with best practices in healthcare, promoting timely and accurate documentation that supports ongoing care and treatment decisions. The SF 506 is typically a standard requirement in many healthcare settings, ensuring that practitioners have a baseline understanding of the patient’s health status from day one.

In comparison, other forms such as the SAC Mental Health Evaluation or the Treatment Plan Form may be completed at different points in the treatment process and may not necessarily be required to be initiated so soon after admission. The Patient Admission Log serves more of an administrative function and does not capture the clinical details essential for immediate care considerations.