This comprehensive document has been carefully curated to provide clinicians with essential guidance on billing for psychological screening and testing services. The Billing Guide encompasses a range of crucial information, including relevant billing codes and documentation guidelines outlined by the American Psychological Association (APA). By referencing this guide, clinicians can ensure accurate and efficient billing practices, promoting transparency and compliance with industry standards. With a focus on optimizing the billing process for psychological screening and testing services, this guide serves as an indispensable resource for clinicians seeking to navigate the complexities of billing while adhering to APA guidelines.