The main purpose of this legislation is to clarify and enhance the coverage of occupational therapy services under the Medicare program, specifically for individuals dealing with substance use and mental health disorders. The goal is to ensure that beneficiaries receive the necessary support and treatment through occupational therapy, which can play a crucial role in their recovery and overall well-being. Key provisions of the legislation require the Secretary of Health and Human Services to conduct education and outreach efforts within one year of the law's enactment.