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🏥 '''Medicaid managed care organization (MCO)''' is a type of [[Definition:Health insurance | health insurance]] entity in the United States that contracts with a state Medicaid agency to deliver and manage healthcare benefits for Medicaid-enrolled populations in exchange for a fixed [[Definition:Capitation | per-member, per-month (PMPM) capitation payment]]. Unlike traditional fee-for-service Medicaid, where the state pays providers directly for each service rendered, an MCO assumes financial [[Definition:Risk transfer | risk]] for the cost of covered services, making it a form of [[Definition:Managed care | managed care]] deeply embedded in the U.S. public health insurance architecture. Major [[Definition:Insurance carrier | insurers]] such as [[Definition:UnitedHealth Group | UnitedHealth Group]], [[Definition:Centene Corporation | Centene]], [[Definition:Molina Healthcare | Molina Healthcare]], and [[Definition:Elevance Health | Elevance Health]] operate large Medicaid MCO businesses, and the model now covers the majority of all Medicaid beneficiaries nationwide.

⚙️ Each state designs its own Medicaid managed care program and selects MCOs through a competitive procurement process, awarding multi-year contracts that specify covered benefits, quality metrics, network adequacy standards, and [[Definition:Medical loss ratio (MLR) | medical loss ratio]] floors. The MCO receives a capitation rate set by the state's [[Definition:Actuary | actuaries]] — a rate that must be certified as actuarially sound under federal regulations — and then builds provider networks, negotiates reimbursement rates, manages [[Definition:Utilization management | utilization]], and coordinates care across primary, specialty, behavioral health, and pharmacy services. Because the MCO bears [[Definition:Underwriting risk | underwriting risk]] on the enrolled population, it must maintain adequate [[Definition:Reserves | reserves]] and [[Definition:Risk-based capital (RBC) | risk-based capital]] as overseen by the state [[Definition:Department of insurance (DOI) | department of insurance]]. [[Definition:Reinsurance | Reinsurance]] arrangements — including both [[Definition:Stop-loss insurance | stop-loss]] protection for high-cost individual claims and aggregate corridors — are common tools MCOs use to manage tail risk.

💡 Medicaid MCOs sit at the intersection of public policy and insurance economics, and their performance has profound implications for both vulnerable populations and insurer profitability. State program redesigns, rate-setting disputes, membership redetermination cycles (such as the large-scale unwinding of continuous enrollment provisions after the COVID-19 public health emergency), and evolving federal regulations create a uniquely complex operating environment. For investors and [[Definition:Insurance analyst | analysts]] evaluating publicly traded health insurers, the Medicaid MCO segment is scrutinized for its margin stability, regulatory risk exposure, and sensitivity to political cycles. While the MCO model is distinctly American — rooted in the structure of the Medicaid program — other countries have experimented with analogous capitated public insurance arrangements, such as portions of the [[Definition:National Health Service (NHS) | NHS]] commissioning framework in England and social health insurance managed competition models in the Netherlands and Israel.

'''Related concepts:'''
{{Div col|colwidth=20em}}
* [[Definition:Managed care]]
* [[Definition:Capitation]]
* [[Definition:Medical loss ratio (MLR)]]
* [[Definition:Medicaid]]
* [[Definition:Health maintenance organization (HMO)]]
* [[Definition:Utilization management]]
{{Div col end}}

Definition:Medicaid managed care organization (MCO) - Revision history

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