Ask a practice manager who pays their Medicaid claims and the answer is usually "the state." It is the natural answer. It is also, for most claims, wrong — and the gap between the two explains a surprising share of Medicaid denials.
Nationally, about 78% of Medicaid beneficiaries are enrolled in comprehensive managed care organizations, and roughly half of all Medicaid spending flows through them. The card says Medicaid. The program has a state name on it. But the entity adjudicating the claim, setting the filing window, and deciding the authorization rules is a commercial insurer under contract to the state.
Why this changes the work
If Medicaid were one payer, one internal rule would be enough. It is not, and treating it as one produces a specific set of failures.
- Filing windows differ per plan. The state program may allow one window; the managed care plan operating inside it may allow a shorter one. A single internal deadline is certain to be wrong somewhere.
- Authorization rules are the plan's, not the state's. Two patients with the same coverage on paper can have different requirements because they are enrolled with different plans.
- Appeals go to the plan first. Appealing to the state on a managed care denial wastes the clock that was actually running.
Five companies, half the market
There is a useful concentration here. Centene, CVS Health, Elevance, Molina and UnitedHealth together account for roughly half of Medicaid managed care enrollment nationally. Learning five payers properly covers a disproportionate share of the work — which is a far more tractable project than "learn Medicaid."
The states that are different
A handful of states run little or no comprehensive managed care, and there the claim really does go to the state. That is now the less common arrangement, but it is not rare enough to ignore, and it is exactly the kind of thing a national billing process gets wrong by assuming.
The practical version of all this: before you bill, know which plan the patient is actually enrolled with, and check it every visit. Medicaid coverage churns month to month in a way commercial coverage does not, and a verification from three weeks ago is not evidence of anything.
Denials Piling Up?
We handle the revenue cycle end to end — coding by certified coders, claim submission, denial management and appeals, and A/R follow-up, with six reported numbers every month.