Implementation of a Hub-and-Spoke Partnership for Opioid Use Disorder Treatment in a Medicaid Nonexpansion State.

Hub-and-spoke (H&S) partnerships for managing opioid use disorder vary by U.S. state. This column provides the first description of the development of an H&S partnership in Tennessee, a Medicaid nonexpansion state. Medicaid expansion allows states to fund evidence-based substance use disorder treatment and community-based psychosocial interventions. In an H&S model in a Medicaid nonexpansion context, federal grant support must fund not only treatment itself but also the creation and maintenance of parallel billing and documentation processes for various partners, reducing the funds available for patient care.