What is CPT CODE 90791?

CPT code 90791 is used for psychiatric diagnostic evaluation. This code is typically billed for an initial assessment by a mental health professional, which includes a comprehensive evaluation of a patient's mental health status, history, and diagnosis. It does not include medical services or the provision of treatment; rather, it focuses solely on the diagnostic aspect. The evaluation can involve interviews, assessments, and observations to establish a treatment plan or further diagnostic needs.