The delivery model changes the payer, the filing window, the authorization rules and the appeal path — everything except the name on the card. A claim sent to the state when a managed care organization is responsible denies, and the MCO clock has been running the whole time.
Two patients hand you what looks like the same Medicaid card. One claim goes to the state. The other goes to a commercial insurer. Almost everything downstream differs.
Fee-for-service
The state is the payer. It sets the fee schedule, the filing window, the authorization rules, and the appeal path. One set of rules for the whole program.
Managed care
The state contracts with private plans and pays them a capitated rate. The plan then adjudicates your claim under its own rules, within the bounds of its state contract.
So the payer is a commercial insurer. The filing window is the plan's, frequently shorter than the state's. Authorization requirements are the plan's. Appeals go to the plan first, and only reach the state after the plan's process is exhausted.
Why this trips practices
- One internal rule. Staff learn "Medicaid works like this" from the fee-for-service side and apply it to managed care claims that follow different rules.
- Appeals sent to the state on a managed care denial, which wastes the plan's window.
- Authorization assumed unnecessary because the state does not require it for that service.
The verification question
Eligibility must answer two things: is Medicaid active, and if so, which plan is the patient enrolled with today? The second question is the one that determines where the claim goes and which rules apply — and it is the one most eligibility checks are not configured to surface.
Verify the plan, not just the coverage
An eligibility check that returns "active" tells you the patient has Medicaid. It does not tell you which entity pays, and in most states that is the question that decides where the claim goes.
Capture the plan name at every visit and treat a plan change as a coverage event, because operationally it is one.
Keep a per-plan reference
Filing window, authorization requirements, claims address or payer ID, and the appeal path — one row per managed care plan you accept. Most states have a handful, and the differences between them are exactly where claims die.
It is an afternoon of work and it removes a permanent category of denial.
Watch for retroactive plan assignment
Patients are sometimes assigned to a plan with an effective date in the past, which converts correctly-billed state claims into wrong-payer denials after the fact. When that happens the recoupment is the trigger to rebill the plan, and its clock may already be short.
Common questions
- What is the difference between Medicaid managed care and fee-for-service?
- Fee-for-service pays the state directly. Managed care pays through a private plan the state contracts with, which sets its own filing windows, authorization rules and appeal process.
- How do I know if a Medicaid patient is in managed care?
- Verify the plan at every visit, not just eligibility. The card frequently does not make it obvious, and patients move between plans without telling you.
- Why did my Medicaid claim deny as wrong payer?
- Almost always because the patient is enrolled in a managed care plan and the claim went to the state. The MCO is the correct payer and its filing clock has been running.
- Do managed care plans have different timely filing limits?
- Yes, and they are frequently shorter than the state’s. Assuming the state’s window applies is one of the more expensive Medicaid mistakes.
- Is the appeal process the same for both?
- No. Managed care appeals run through the plan first, with the state fair hearing process behind it. Skipping the plan level usually gets the appeal returned.
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.