Fee-for-service vs. managed Medicaid

Medicaid is jointly funded by the federal and state governments and administered by each state within federal rules. States choose how to deliver benefits, and the two dominant arrangements differ in who bears financial risk and who administers the claim. In fee-for-service (FFS), the state agency reimburses each covered service according to a published methodology and pays the provider directly. In managed care, the state pays a managed care organization (MCO) a capitated amount per enrolled member, and the plan assumes responsibility for arranging, authorizing, and paying for covered care.

Neither model is universal within a state. A single Medicaid program commonly runs both simultaneously — enrolling most beneficiaries in managed care while keeping FFS for newly eligible members awaiting plan assignment, specific eligibility categories, or services that are "carved out" of the plan contract. The mix, the participating plans, and the carve-out list are state-specific and change over time. For the structural background, see how Medicaid works and the federal-state structure of Medicaid.

The two models diverge across the revenue cycle. The table summarizes the structural differences; the specifics within each cell are set by the state and, for managed care, by each contracted plan.

Because plans layer their own rules on top of the state framework, the same service can face different prior authorization requirements and different timely filing windows depending on the beneficiary's plan. Fee methodology under FFS is likewise state-specific — see Medicaid fee schedules and reimbursement.

Because the delivery model determines the payer, confirming it is part of front-end eligibility verification. A verification response typically indicates whether a beneficiary is in FFS or enrolled in a specific plan on the date of service, and which plan holds the member. Relying on an outdated assumption is a common source of misrouted claims, because a beneficiary can move between FFS and a plan — or between plans — over time.

1. 01

   Verify coverage and delivery model

   Confirm active Medicaid coverage and whether the beneficiary is FFS or plan-enrolled for the date of service. See verifying Medicaid coverage.
2. 02

   Identify the responsible payer

   For managed care, capture the exact plan and its claim address or payer ID; for FFS, the state agency or its fiscal agent is the payer.
3. 03

   Confirm participation

   Check that the rendering and billing entities hold the required provider enrollment and, for managed care, a contract with that specific plan.
4. 04

   Apply the correct utilization rules

   Use the payer whose medical necessity and authorization policy governs the service — the state's under FFS, the plan's under managed care.

Participation differs by model. FFS billing rests on the state Medicaid enrollment relationship, while managed care generally requires that same state enrollment plus a separate contract with each plan whose members the provider intends to serve. Under federal rules, states require managed care network providers to be enrolled with the state Medicaid program as well. Because these requirements and their sequencing are state- and plan-specific, they are confirmed against the state agency and each plan; see Medicaid provider enrollment basics and, for plan networks, Medicaid managed care organizations.

Claim routing follows the model. Professional and institutional claims use the standard CMS-1500 and UB-04 formats in either case, but the destination and payer identifiers differ: FFS claims go to the state or its fiscal agent, while managed care claims go to the enrolling plan. Sending a plan member's claim to the state — or vice versa — is a frequent cause of rejection. Carve-outs complicate this further: a state may deliver most of a beneficiary's care through a plan while paying certain services, such as some behavioral health or long-term services, through FFS or a separate arrangement. The carve-out list is defined by the state.

When a claim is not paid, the remittance advice identifies the reason, but the route to challenge it depends on the model. FFS claim denials are disputed through the state agency's claim reconsideration and appeal process; managed care claim denials move through the plan's provider dispute and appeal process, subject to state oversight. These provider claim-dispute steps are distinct from the beneficiary coverage-appeal rights that Medicaid also provides — such as plan-level appeals and the state fair hearing — which follow their own paths and timelines. The specific steps, forms, and deadlines are set by the state and each plan. Directing a dispute to the wrong entity wastes the timely filing and appeal clock, so the responsible payer must be identified before filing.

Many denials trace back to model confusion — a claim sent to the state for a plan member, a service authorized under the wrong payer's policy, or participation missing with a specific plan. Front-end verification of the delivery model prevents most of these. For patterns and prevention, see common Medicaid billing denials and the general denials and appeals material.