This bill extends a requirement for state Medicaid programs to cover medication-assisted treatment for addiction beyond its current September 2025 expiration date, making the coverage requirement permanent. Medication-assisted treatment uses FDA-approved medications like methadone and buprenorphine to help people manage opioid and other substance use disorders. The legislation affects millions of low-income Americans who rely on Medicaid for health coverage and are struggling with addiction. Instead of ending in 2025, states must now continuously provide this treatment coverage, though they will need to certify their compliance to the federal government every five years rather than once upfront. The bill does not specify new federal funding but aims to ensure ongoing access to proven addiction treatment through existing Medicaid resources.