Managed care organization (MCO)
A managed care organization (MCO) is a health plan that contracts with a state Medicaid agency to deliver covered benefits to enrolled members in exchange for a set per-member payment, becoming the payer that providers bill for those members' services.
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Medicaid is jointly funded by the federal and state governments and administered by each state. Instead of paying providers directly for each service, many states contract with managed care organizations to arrange and pay for care. An MCO is a health plan that agrees to cover a defined set of Medicaid benefits for people enrolled with it, and the state generally pays the MCO a fixed, prospective amount per enrolled member (often called a capitation payment) rather than paying for each individual service.
For billing purposes, the MCO functions as the payer for its enrolled members. A provider treating a Medicaid member who is enrolled in an MCO typically submits claims to that MCO under the plan's rules, networks, and prior-authorization requirements, rather than to the state's fee-for-service program. Whether a given state uses MCOs, which populations are enrolled, which benefits the MCO covers versus benefits the state 'carves out' to pay directly, and how claims must be submitted all vary by state, program, and contract.
Managed care arrangements take several forms. A comprehensive risk-based MCO covers a broad benefit package, while other arrangements may cover only limited services or pay providers on a different basis. Federal managed care regulations set baseline requirements that states and their contracted plans must follow, but the operational details are defined in each state's program and its contracts with plans.
In practice
In states that use managed care, correctly identifying the responsible payer is a core part of the billing workflow. The same Medicaid program may include multiple MCOs, so eligibility verification generally establishes not only that a person has Medicaid coverage but also which plan, if any, that person is enrolled in on the date of service. Sending a claim to the wrong entity, such as the state fee-for-service program when the member is enrolled in an MCO, commonly results in denial.
Because each MCO administers its own provider network, covered-service rules, prior-authorization requirements, claim formats, and timely-filing and appeal timelines within the framework the state sets, billing staff typically follow the specific plan's published requirements rather than assuming uniform rules across plans or states. Details such as filing deadlines and authorization requirements are set by the plan, the state contract, and program policy, and should be confirmed against those authoritative sources rather than assumed.
Commonly confused with
- Fee-for-service (FFS) Medicaid: Under FFS, the state Medicaid agency (or its contractor) pays providers for each covered service directly. With an MCO, the state instead pays the plan a set amount per member, and the plan becomes the payer providers bill.
- Medicare Advantage plan: Medicare Advantage plans are managed care plans under the Medicare program for Medicare beneficiaries. A Medicaid MCO contracts with a state Medicaid agency to serve Medicaid members; the two are different programs, though some individuals are enrolled in both.
- Third-party administrator (TPA): A TPA processes claims or administers benefits on behalf of another payer but does not itself bear the insurance risk for covered benefits. A risk-based MCO accepts payment to cover its members' benefits and carries that financial responsibility.