A settlement figure quoted over the phone is a gross number, and the distance between that number and the check you deposit is filled by parties who never negotiated with you directly. Your health plan paid the emergency room. Medicare may have paid the follow-up imaging. The hospital may have skipped billing insurance entirely and filed a lien against the case instead. Each of them has a different legal footing, a different appetite for compromise, and a different deadline. Sorting them is not paperwork you do after the case closes. It is the case.
Self-funded ERISA plans against ordinary health insurance
The first thing worth checking is whether the health plan that paid your bills is self-funded or fully insured, because they behave nothing alike. A self-funded plan, typically offered by a large employer and governed by federal law that the Department of Labor is responsible for overseeing, often carries reimbursement language that survives state rules limiting what an insurer can take back. A fully insured plan, one where an insurance company bears the risk and the policy is regulated by your state, is usually subject to state doctrines that reduce the claim when you have not been made whole or when your attorney did the work of creating the fund. The summary plan description tells you which you have.
The practical difference shows up in the numbers. A state-regulated plan frequently accepts a reduction reflecting its share of the fees and costs spent producing the recovery, and sometimes more when the policy limits are low. A self-funded plan may open by insisting on every dollar it paid, and a careful reader asks for the actual plan document rather than the recovery vendor's letter, because the vendor's summary and the plan's operative language are not always the same thing. Where the document is silent or sloppy, room appears.
Medicare and Medicaid against private payers
Government payers are less negotiable in kind but more predictable in process. Medicare's interest is statutory, runs through a recovery contractor, and arrives as a conditional payment summary listing charges by date and provider. The productive move is not haggling over the total but auditing the list, because unrelated treatment routinely lands on it: a diabetes visit, a dermatology follow-up, anything that happened to fall inside the claim window. Disputing those line items usually does more than a plea for mercy. Medicaid claims are handled at the state level and are commonly capped by a statutory formula, which makes the ceiling knowable early.
Both programs also have timing consequences that private payers do not. A final demand must be requested and received before disbursement, and future medical exposure can matter in cases involving ongoing treatment. None of this is fatal to a case, but it is slow, so the request goes out while liability is still being argued rather than after the release is signed. Cases that stall at the end almost always stalled because someone waited to start this.
Hospital liens and med-pay against everything else
A hospital lien is a creature of state statute and often the most aggressive item on the list, because it attaches to full billed charges rather than the discounted rate an insurer would have paid. Many state statutes impose strict conditions: filing within a set number of days, notice to the patient, recording in a particular office, sometimes a requirement that the hospital not have billed available health insurance. Liens fail those tests more often than people expect. Med-pay, the no-fault coverage on your own auto policy, sits differently again, since some states allow subrogation and others do not.
What a careful reader actually checks
Start with a written inventory rather than a memory. Request an itemized ledger from every provider, an explanation of benefits history from the health plan, a conditional payment letter from the Medicare contractor if any part of the treatment was covered, and a direct question to your own auto carrier about whether med-pay was paid and whether it is claiming reimbursement. Then verify each asserted lien against the statute or plan language that supposedly creates it, check the dates of service against the accident date, and price the discount the payer actually applied. The arithmetic that matters is what remains after all of it.
Ask any adjuster or attorney for a net sheet before agreeing to anything: gross settlement, fees, costs, each lien by name with its current demand and its expected reduction, and the number at the bottom. If nobody can produce that sheet, the case is not ready to settle yet, and saying so costs nothing.