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See the 60-second demo →Consider an illustrative scenario - the figures are rounded and the case is a composite, but the sequence is the one lien specialists warn about. A plaintiff's attorney settles a $1.8 million slip-and-fall case in late 2024. The client had been on Medicare for six years. The attorney obtained a conditional payment summary, negotiated it down from $142,000 to $61,000, and distributed the remainder to the client. Clean, right?
Three months later, CMS sent a demand letter for $207,000—nearly $150,000 more than the attorney had calculated. Why? The attorney had used the Summary of Benefits rather than the actual conditional payment letter. CMS had been paying for the client's ongoing cardiac care—care the attorney never connected to the accident because the client hadn't mentioned it. The attorney paid the difference out of pocket.
This happens constantly. And it's almost entirely preventable with the right process.
When a Medicare beneficiary is injured and receives medical treatment, Medicare often pays first as the "conditional" payer—meaning Medicare pays the bills with the condition that it will be reimbursed if the injured party recovers money from a third party. This creates a federal lien under the Medicare Secondary Payer (MSP) Act, 42 U.S.C. § 1395y(b).
The key word is federal. Unlike hospital liens or Medicaid liens (which vary by state), Medicare liens arise under federal law. Federal law preempts state anti-lien and anti-subrogation statutes. You cannot negotiate them away with a "we don't honor liens" letter. You cannot distribute settlement proceeds and hope CMS doesn't notice. CMS notices.
Administered through the Benefits Coordination & Recovery Center (BCRC). The process involves:
Each MA plan has its own subrogation rights under the plan documents AND under MSP law. There is no central registry. You must contact each plan directly. The wrinkle: courts have split on whether MA plans can demand full reimbursement or whether they're subject to the same pro-rata reduction rules as traditional Medicare. The Eleventh Circuit (MSPA Recovery LLC) has consistently ruled in favor of MA plans getting full reimbursement. Know your jurisdiction.
Medicaid lien law varies dramatically by state. Post-Wos v. E.M.A. (2013) and Johansson v. Centrex, states cannot claim more than the injury-related portion of settlement proceeds. Most states have enacted anti-lien statutes that limit Medicaid recovery to the "medical" portion of the settlement. Key rules:
Ask every client: "Are you enrolled in Medicare, Medicare Advantage, or Medicaid?" Get their Medicare ID number. Check for MA plan ID cards. Run their SSN through the MSPRP if you have authorization. Do not wait until settlement—conditional payment interest accrues from date of service.
Register the case with the BCRC via the MSPRP online portal. You'll need: client name, Medicare ID, date of injury, description of incident, name of insurer. This starts the clock and locks in the conditional payment calculation date. For MA plans, send written notice directly to the plan's MSP/recovery department.
This is where most attorneys go wrong. The Summary of Benefits shows what Medicare has paid for all care. The Conditional Payment Letter shows what CMS is asserting as related to the accident. Request the CPL via MSPRP. Review every line item. Flag anything that looks unrelated (pre-existing conditions, care for other body systems, unrelated medications).
CMS frequently includes items in the CPL that are not causally related to the accident. Common examples: cardiologist visits when the case involves a knee injury; psychiatric medications for conditions predating the accident; hospital stays for unrelated illnesses during the recovery period. You can—and should—dispute these. CMS requires ICD-10 codes and a brief clinical narrative for each disputed item. This is where AI-assisted medical record review pays off dramatically.
Under 42 C.F.R. § 411.37, Medicare's lien is reduced by the "procurement costs"—attorney's fees and litigation expenses—proportional to Medicare's share of the recovery. The formula:
Medicare Reimbursement = Conditional Payment × [1 – (Attorney's Fee % + Expense %)]
Example: $100,000 settlement, $60,000 CPL, 33% fee, $5,000 expenses. Medicare share = $60,000/$100,000 = 60%. Fee reduction = 38% × 60% = 22.8%. Medicare net reimbursement = $60,000 – $13,680 = $46,320. Not $60,000.
If full reimbursement would cause financial hardship to the client, you can request a waiver or compromise of the Medicare lien. Success rates vary but CMS approves roughly 30-40% of compromise requests when hardship is well-documented. Medical complexity, ongoing treatment needs, and low total recovery relative to damages all strengthen the request.
For cases involving future medical expenses related to the injury (workers' comp, some personal injury cases), CMS expects a Medicare Set-Aside (MSA) arrangement to protect Medicare from paying for injury-related treatment post-settlement. MSAs are most common—and most scrutinized—in workers' comp cases. In liability cases, CMS does not formally review MSAs but expects "consideration" of Medicare's interests. This is an evolving area of law.
After settlement, you must report the resolution via the MSPRP within 60 days. CMS will then issue a Final Demand. You have 60 days to pay from the final demand letter or face interest charges (currently 10.5% annually). Do not distribute settlement funds until you have the final demand and have paid CMS—or obtained written confirmation of the payoff amount.
The most time-consuming part of Medicare lien resolution isn't the paperwork—it's the medical record review to dispute non-related items. Consider a typical soft tissue injury case with two years of treatment: the Conditional Payment Letter might list 40-60 line items spanning multiple providers. For each disputed item, you need to:
Manually, this takes an experienced paralegal or legal nurse consultant 4-8 hours per case. An AI tool like MedLegal AI can complete the same cross-reference analysis in under 15 minutes, flagging every CPT code, mapping it to the ICD-10 diagnosis, and generating the dispute narrative automatically.
| CPT Code | Description | Common Dispute Basis |
|---|---|---|
| 99213-99215 | Office E&M visits | Pre-existing condition follow-up (DM, HTN, COPD) unrelated to injury |
| 93000 | EKG | Cardiac workup predating or unrelated to accident |
| 70553 | MRI Brain w/ contrast | Cognitive concerns not related to trauma |
| 82947 | Glucose test | Diabetes management — not injury-related |
| 90837 | Psychotherapy 60 min | Pre-existing mental health treatment |
| 97110 | Therapeutic exercise | Physical therapy for separate, pre-existing condition |
| J0696 | Ceftriaxone injection | Infection treatment during hospitalization unrelated to accident injuries |
As noted above, over half of all Medicare beneficiaries are now in MA plans—and MA plan lien resolution is messier than traditional Medicare. Here's what you need to know:
There is no MSPRP for MA plans. Each plan runs its own recovery program, often through third-party vendors like Equian, SubroHealth, or Optum. You may receive a lien notice from a vendor with an unfamiliar name months after settlement—and that vendor has full MSP authority.
MA plans can sue directly. The Eleventh Circuit and several others have held that MA organizations have a private right of action to recover conditional payments, including double damages. MSPA Recovery LLC has filed hundreds of suits against plaintiff's attorneys who failed to satisfy MA plan liens before distributing funds.
The same dispute process applies. Just like with CMS, you can dispute non-related items with an MA plan. You can also invoke the procurement cost reduction formula. The plan may be more or less cooperative than CMS—but you have the same legal rights.
After Wos v. E.M.A. (2013), states must limit Medicaid recovery to the portion of the settlement that represents medical expenses—they cannot claim payment from portions allocated to pain and suffering, lost wages, or future damages. In practice, most cases require an Ahlborn allocation: a formal calculation (or negotiation) of what portion of the total damages represents past medical expenses.
For low-value settlements relative to total damages (the common scenario), the Medicaid lien can often be reduced to a fraction of the initial claim. Document the full damages picture carefully: life care plan, economic loss report, pain and suffering narrative. The larger the total damages compared to settlement, the better the proportional reduction argument.
If your client was covered by an employer-sponsored health plan—not Medicare or Medicaid—you're dealing with ERISA subrogation, which operates under a completely different legal framework. Key points:
For large ERISA liens, a call to a healthcare lien specialist (firms like Garretson Resolution Group, Tower MSA Partners, or Synergy Settlement Services) often pays for itself in reduced exposure.
Upload your client's medical records and Conditional Payment Letter. MedLegal AI maps every CPT code to its ICD-10 diagnosis, flags non-related items, calculates the procurement cost reduction, and generates your dispute narrative — in minutes.
Analyze a Case for Free →Attorneys have been sued personally—by CMS, by MA plans, and by clients—for these errors:
Yes. You can dispute non-related items (which reduces the lien), apply the procurement cost formula (which reduces the reimbursement further), and in hardship cases, request a formal compromise. In complex cases with good documentation, total effective lien reductions of 40-60% from the initial CPL are achievable.
This is your problem, not just theirs. As the recipient of settlement funds, you have an independent obligation under the MSP Act to protect Medicare's interest. If you distribute funds to the client without satisfying the lien, CMS can pursue you directly for double the conditional payment amount. You cannot simply pass the obligation to the client.
Traditional Medicare: 60-120 days from registration to Final Demand, assuming no disputes. With disputes, add 30-60 days per round. MA plans: highly variable, from 2 weeks to 6+ months depending on the plan. Build this into your case timeline — don't promise clients distribution before the lien process is complete.
CMS has published guidance on de minimis waivers for liens under $300, but this is discretionary and not consistently applied. Don't assume small liens will be waived — request the waiver formally and get written confirmation before distributing.
Yes. If settlement proceeds are structured, Medicare's interest must be addressed before the structure is established. A portion of the proceeds must be set aside or paid to CMS before the structured settlement annuity is purchased. Work with your structured settlement broker early — they're experienced in this coordination.
Medicare, Medicaid, and ERISA lien resolution is one of the highest-risk, most technically demanding aspects of personal injury practice. The penalties for non-compliance are severe, the process is complex, and the rules change regularly (MA plan litigation is still evolving in multiple circuits).
The good news: for experienced PI attorneys with the right tools and process, lien resolution is a solvable problem. AI-assisted medical record review dramatically accelerates the dispute and calculation process, and the savings — both in time and in increased lien reductions — are real and measurable.
The attorneys who handle liens systematically, dispute aggressively, and document thoroughly consistently achieve better outcomes for clients and avoid the personal liability traps that catch their peers. Build the process. Use the tools. Protect yourself and your clients.
Medicare lien analysis. Medical record chronologies. Billing anomaly detection. Expert witness verification. AI-powered tools built specifically for plaintiff and defense attorneys — not generic ChatGPT wrappers.
Start Free Trial →This article is for informational purposes only and does not constitute legal advice. Medicare Secondary Payer law is complex and fact-specific. Consult with an MSP compliance specialist for guidance on specific cases.