Negotiating ERISA Plan Recovery When Pharmacy Liens Are Present

James Wong — Founder & Pharmacist, LienScripts | March 26, 2026 | 8 min read

A structured negotiation letter to the TPA administering an ERISA self-funded plan can resolve subrogation disputes before litigation. This guide provides the framework, key citations, and strategic considerations when pharmacy liens are also present at settlement.

An ERISA subrogation negotiation letter is a structured response to a third-party administrator's reimbursement demand that challenges overbroad claims, asserts applicable equitable defenses, and separates pharmacy lien costs from plan-paid expenses. When drafted correctly and supported by documentation, this letter resolves most ERISA subrogation disputes without litigation.

• The negotiation letter should address the factual basis (what the plan actually paid), legal defenses (McCutchen, made-whole, Montanile), and pharmacy lien separation
• TPAs administering self-funded plans have settlement authority and typically prefer negotiated resolution over federal court litigation
• Documentation is critical: attach itemized EOBs, the MERIT report, and relevant SPD sections
• The letter should be sent promptly after receiving the TPA's demand — delays reduce leverage
• LienScripts generates a MERIT (Medication Evaluation & Rationale for Injury Treatment) report that provides independent documentation of lien-funded medication costs for attachment to the negotiation letter

Before Writing: Gather Your Evidence

The strength of an ERISA negotiation letter depends entirely on the documentation behind it. Before drafting, assemble:

From the TPA:

• The subrogation demand letter with itemized amounts
• Complete EOBs for all claims processed under the patient's name related to the injury
• The Summary Plan Description — the full document, not a summary

From your file:

• The retainer agreement showing contingency percentage
• The settlement amount and proposed distribution
• Total damages analysis (for made-whole arguments)

From LienScripts:

• The MERIT (Medication Evaluation & Rationale for Injury Treatment) report documenting every lien-funded medication
• The Lien Summary Report (LSR) showing the pharmacy lien balance
• Enrollment date confirming when the pharmacy lien was established

According to James Wong, PharmD, founder of LienScripts, "When attorneys request the MERIT report for ERISA cases, we format it to clearly delineate that every medication listed was dispensed under the pharmacy lien arrangement and was never billed to any health plan. This makes the separation argument self-evident when attached to the negotiation letter."

[!KEY] The most common mistake in ERISA subrogation negotiation is responding to the TPA's demand with generic legal arguments before confirming what the plan actually paid. Always start with the factual foundation — request itemized EOBs and compare them against the TPA's claimed amounts.

Letter Framework: Section by Section

The negotiation letter should follow a clear structure that addresses each issue methodically.

Section 1: Factual Challenge to Claimed Amounts

Begin by addressing what the plan actually paid versus what the TPA's demand claims:

"Our review of the Explanation of Benefits records provided by [TPA] confirms that [Plan Name] paid [specific amount] in medical expenses related to [Patient]'s injury. This includes [itemized categories: imaging, procedures, office visits]. The TPA's demand letter of [date] includes a line item for pharmacy costs of [amount]. We have confirmed through independent documentation that no prescription medications related to this injury were billed to or paid by the Plan. All injury-related medications were dispensed through a pharmacy lien arrangement established at intake on [date]."

Attach the MERIT report and the EOB analysis as exhibits.

Section 2: Common Fund Reduction (McCutchen)

If the SPD is silent on attorney fees:

"The Plan's Summary Plan Description does not contain any provision addressing the allocation of attorney fees in connection with the Plan's subrogation or reimbursement right. Under US Airways, Inc. v. McCutchen, 569 U.S. 88 (2013), the default equitable rule requires the Plan to contribute its pro-rata share of the attorney's contingency fee that produced the settlement fund. The contingency fee in this case is [percentage]. Accordingly, the Plan's recovery of [confirmed amount] is subject to a [percentage] common fund reduction, yielding a net recovery of [calculated amount]."

[!TIP] Quote the specific SPD sections on subrogation in full. If the plan's subrogation provision does not mention attorney fees at all, state that expressly. The absence of language is your argument — make it visible.

Section 3: Made-Whole Defense (If Applicable)

If the SPD is also silent on made-whole:

"[Patient]'s total damages, including medical expenses, lost wages, pain and suffering, and future medical costs, are conservatively estimated at [amount]. The settlement of [amount] represents approximately [percentage] of full damages value. The Plan's SPD does not contain any provision authorizing the Plan to recover before the Covered Person has been fully compensated. Under McCutchen, the default equitable made-whole doctrine applies, and the Plan's recovery should be reduced proportionally or eliminated entirely given that [Patient] has not been made whole."

Section 4: Montanile Notice

Provide notice of the disbursement timeline:

"We intend to disburse the settlement proceeds within [timeframe] of the date of this letter. Under Montanile v. Board of Trustees of the National Elevator Industry Health Benefit Plan, 577 U.S. 136 (2016), the Plan's equitable lien by agreement attaches only to specifically traceable funds in [Patient]'s possession. We encourage the Plan to resolve this matter promptly to preserve its recovery interest."

Section 5: Proposed Resolution

State your offer clearly:

"Based on the foregoing analysis, we propose resolution of the Plan's subrogation claim as follows: [confirmed plan-paid amount] minus [common fund reduction] = [proposed payment], payable upon settlement disbursement, in exchange for a full release of the Plan's subrogation and reimbursement claims. The pharmacy lien of [amount] will be satisfied separately from [Patient]'s net recovery and is not subject to the Plan's claim."

Strategic Considerations

Timing matters. Send the negotiation letter within 7-10 days of receiving the TPA's demand. Prompt response signals competence and preserves all arguments. Delays suggest the attorney is uncertain.

TPAs prefer certainty. TPAs administering self-funded plans are evaluated on recovery rates and efficiency. A well-documented negotiation letter with a clear proposed resolution often produces a counter-offer within 2-3 weeks. Litigation is expensive for both sides.

Preserve all arguments even when making concessions. If you offer a settlement figure, state that the offer is "without prejudice to any legal defenses" in the event negotiations fail. This preserves McCutchen, made-whole, and Montanile arguments for federal court if needed.

Separate pharmacy lien costs clearly. The TPA must understand that pharmacy costs are not on the table. The MERIT report, attached as an exhibit, makes this unambiguous. Do not invite negotiation on a cost category the plan never paid.

[!KEY] The goal of the negotiation letter is not to eliminate the plan's legitimate claim — it is to confine the claim to what the plan actually paid, reduce it by applicable equitable defenses, and ensure that pharmacy lien costs are excluded from the subrogation analysis entirely. This disciplined approach produces faster resolution and better client outcomes.

When Negotiation Fails: Federal Court Considerations

If the TPA refuses to negotiate reasonably, the dispute moves to federal court under ERISA Section 502(a)(3). Key considerations:

• The plan must file in federal court — ERISA jurisdiction is exclusively federal
• The plan bears the burden of proving it has an equitable lien by agreement under Sereboff
• The attorney's McCutchen and made-whole defenses are raised as equitable defenses
• Montanile limits the plan's remedy to specifically traceable funds — if proceeds have been disbursed, the plan may have no enforceable claim

Most ERISA subrogation disputes settle before litigation. A well-crafted negotiation letter, supported by the MERIT report and SPD analysis, resolves the vast majority of cases at the letter stage.

Related Resources

• ERISA Plan Language Analysis for Pharmacy Liens
• ERISA Common Fund Doctrine and Pharmacy Recovery
• ERISA Made-Whole Doctrine and Pharmacy Liens
• ERISA Self-Funded Plan Defense for Pharmacy Liens