"Dual eligible", or "dually eligible person", any person age 21 or older and under age 65 who is enrolled in both Medicare and MassHealth.
"Integrated care organization" or "ICO", a comprehensive network of medical, health care and long-term services and supports providers that integrates all components of care, either directly or through subcontracts and has been contracted with by the executive office of health and human services and designated an ICO to provide services to dually eligible individuals under this section.
Mass. Gen. Laws ch. 118E, § 9F