The Definitive Guide to Medicare Set-Aside (MSA) Allocations and Annuity Arbitrage

1. The Medicare Secondary Payer Act: The Federal Wall

To understand the mechanics of a Workers’ Compensation Medicare Set-Aside (WCMSA), you must first understand the federal law that created it: The Medicare Secondary Payer (MSP) Act of 1980. Before 1980, Medicare paid for everything. If an employee was injured on the job, the employer’s insurance would settle the claim, the worker would pocket the cash, and when they subsequently needed a $60,000 spinal fusion five years later, they simply billed Medicare.

The federal government realized that state-level workers’ compensation systems were systematically offloading billions of dollars in private corporate liabilities onto the taxpayer-funded Medicare system. The MSP Act stopped this cold. It legally established that Medicare is a secondary payer. The primary payer—the workers’ comp insurance carrier or self-insured employer—must exhaust their obligations first.

For corporate risk officers executing a Compromise & Release (C&R), the MSA is not an optional legal suggestion. Failure to properly allocate and protect Medicare’s interests can result in the federal government retroactively invalidating the settlement, suing the employer, the insurance carrier, and even the claimant’s attorney for double damages.

2. The CMS Review Thresholds: Are You Trapped?

Not every workers’ compensation settlement requires federal review. The Centers for Medicare & Medicaid Services (CMS) has established strict workload thresholds. If your settlement meets these criteria, you are expected to submit the proposed MSA allocation to the Workers’ Compensation Review Contractor (WCRC) for official approval.

• Threshold 1: The Current Beneficiary ($25,000 Rule). If the claimant is currently enrolled in Medicare (due to being 65+ years old or on Social Security Disability/SSDI for 24+ months), and the total settlement amount is greater than $25,000.
• Threshold 2: The Expected Beneficiary ($250,000 Rule). If the claimant has a “reasonable expectation” of enrolling in Medicare within 30 months of the settlement date, and the total settlement amount exceeds $250,000.

What constitutes a “reasonable expectation” of Medicare enrollment within 30 months? CMS defines this strictly: the claimant is 62.5 years of age or older, has applied for Social Security Disability Insurance (SSDI), has been denied SSDI but is actively appealing the decision, or has End-Stage Renal Disease (ESRD).

3. The Anatomy of an MSA Allocation Report

When an employer decides to execute a C&R, they hire an MSA Vendor (usually a specialized medical-legal firm staffed by nurses and certified coders). This vendor reviews 100% of the claimant’s medical records for the past two years to project the lifetime cost of care related only to the accepted body parts.

An MSA report is divided into two distinct, equally lethal financial categories: Medical (Part B) and Pharmacy/Prescription (Part D).

Medical Projections (Part B)

The vendor must project every doctor visit, physical therapy session, diagnostic image (MRI/CT), surgical intervention, and durable medical equipment (DME) replacement the claimant will need for the rest of their natural life, priced exactly at the state’s prevailing workers’ compensation fee schedule.

If a claimant has a 30-year life expectancy and currently visits their pain management doctor four times a year, the MSA must fund 120 future office visits. If they had a knee replacement that typically lasts 15 years, and they are expected to live another 35 years, the MSA must fund two future revision surgeries, plus the hospital stays, anesthesia, and post-op rehab for both.

Pharmacy Projections (Part D) and the AWP Nightmare

While medical projections use fee schedules, pharmacy projections use Average Wholesale Price (AWP). This is where MSAs explode into catastrophic liabilities. AWP is notoriously inflated—often described as the “sticker price” of a drug that no actual insurance company ever pays. But CMS requires MSA pharmacy allocations to be priced at AWP.

If a claimant is prescribed a name-brand nerve pain medication (e.g., Lyrica) that costs $800 a month at AWP, and they have a 25-year life expectancy, the pharmacy allocation alone adds $240,000 to the MSA. Weaning a claimant off high-cost opioids or transitioning them to generics at least six months prior to the MSA allocation is a critical cost-containment strategy.

4. The Rated Age Advantage: Bypassing Chronological Math

The entire MSA calculation rests on a single multiplier: Life Expectancy. By default, CMS utilizes the CDC’s standard life tables. A 50-year-old male is statistically projected to live another 28 years. Therefore, the MSA must fund 28 years of care.

However, severely injured workers—particularly those reliant on heavy narcotics, suffering from obesity, diabetes, cardiovascular disease, or a history of smoking—rarely meet standard mortality projections. Elite defense teams use a tactic called a Rated Age to collapse the MSA timeline.

To utilize a rated age, the employer must hire a specialized life expectancy underwriter to review the claimant’s comorbid health conditions (even those unrelated to the work injury, such as hypertension or liver disease). The underwriter issues an official “Rated Age” certificate declaring that, from a mortality standpoint, the 50-year-old claimant possesses the biological age of a 65-year-old. When submitted to CMS alongside the MSA, CMS is bound to use the shorter life expectancy, stripping decades of compounding costs off the allocation.

5. Funding the MSA: Lump Sum vs. Structured Settlement Annuity

Once the vendor determines that the MSA must contain $300,000, the corporate risk officer faces the most vital financial decision in the C&R process: How do we pay it?

You can cut a single $300,000 check today (Lump Sum), or you can utilize a Structured Settlement Annuity. CMS allows MSAs to be funded via an annuity, which pays out a specific amount of “Seed Money” on day one, followed by smaller annual anniversary payments for the rest of the claimant’s life.

Because highly rated life insurance companies (e.g., Berkshire Hathaway, Pacific Life) invest the annuity premium and generate yield over decades, they will sell you the obligation to pay $300,000 over 30 years for a fraction of the cost today. This is standard present-value arbitrage, fully blessed by the federal government.

Furthermore, if the claimant dies prematurely (e.g., in year 7 of a 25-year projection), the annuity payments simply stop. The employer does not owe the remaining balance to the claimant’s estate, because the payments are contingent on the claimant remaining alive. In a lump-sum scenario, the claimant’s heirs simply inherit the unspent medical funds.

6. The CMS Seed Money Formula

To execute an annuitized MSA, CMS requires the employer to heavily front-load the first payment to ensure the claimant doesn’t run out of money if they require immediate surgery. This front-loaded payment is called “Seed Money.”

7. Professional vs. Self-Administration

Once the MSA is funded, who manages the money? The claimant has two choices: Self-Administration or Professional Administration.

Self-Administration means the injured worker manages the dedicated bank account themselves. They must pay providers according to complex state fee schedules, track every receipt, and file annual attestation reports to CMS proving they haven’t misspent the funds. Unsurprisingly, laypeople frequently fail at this. They use the MSA debit card to buy groceries, violating federal law, and subsequently lose their Medicare privileges.

Professional Administration involves hiring a third-party firm (e.g., Ametros) to act as a fiduciary. The MSA funds go directly to the administrator. When the claimant goes to the pharmacy, they present a special card, the vendor discounts the drug from AWP to network rates, pays the bill out of the MSA account, and handles all CMS reporting.

8. The CMS Approval Process and The “Counter-Higher” Threat

If your settlement meets the review thresholds, you submit the MSA Allocation Report to the CMS Workers’ Compensation Review Contractor (WCRC). The timeline is notoriously sluggish. Expect 30 to 60 days for a response, sometimes stretching to 90 days if medical records are missing.

The WCRC will issue one of three responses:

1. Approval: CMS agrees with your vendor’s math. The MSA is approved as submitted.
2. Development Letter: CMS requires more information—typically updated pharmacy records or clarification from a treating physician regarding the need for future surgery.
3. The Counter-Higher: The nightmare scenario. CMS rejects your vendor’s $150k projection and demands $320k. This usually happens because CMS spots an off-label drug use, refuses to accept a generic substitute without a doctor’s explicit written order, or assumes a highly invasive surgery is required despite conservative treatment notes.

If you receive a counter-higher, the employer has two options: fund the higher amount (killing the ROI of the settlement), or abandon the C&R entirely and return to paying the claim on an open, stipulated basis. You can attempt to appeal a CMS counter-higher via a Re-Review process, but you must produce concrete, new medical evidence (e.g., a new MRI proving surgery is unnecessary) to succeed.

9. Evidence-Based MSAs and Non-Submit Strategies

Given the draconian nature of CMS review, a growing trend among aggressive corporate risk officers is the “Non-Submit” or Evidence-Based MSA (EBMSA) strategy.

Submission to CMS is a voluntary process. There is no statutory law that explicitly mandates an employer must seek CMS approval—the law only states that Medicare’s interests must be “adequately protected.”

In a Non-Submit strategy, the employer hires an elite vendor to calculate an ultra-defensible, mathematically rigorous MSA using evidence-based medicine (e.g., ODG or ACOEM guidelines) rather than CMS’s inherently inflated, worst-case-scenario guidelines. The employer funds this lower MSA amount, structures the settlement, and deliberately bypasses CMS review. The claimant signs an indemnification agreement accepting the risk.

The Risk: If the MSA runs out, and the claimant bills Medicare, Medicare may audit the file. If Medicare decides the original non-submitted MSA was grossly underfunded, they will deny care to the claimant until the “shortfall” is paid. The claimant may then attempt to sue the employer for breach of contract, though strong settlement language usually shields the corporation.

The Reward: Non-submit strategies frequently reduce MSA funding requirements by 30% to 50% compared to formal CMS submissions, bypass the 90-day WCRC delay, and allow employers to immediately close toxic legacy claims.

10. Step-by-Step Case Study: The $420k Complex Buyout

Let’s tie the entire three-post series together into a final, comprehensive financial model. A logistics company with a $500,000 Self-Insured Retention (SIR) wants to buy out a 63-year-old warehouse worker with a severe lumbar fusion injury. The claimant is currently on SSDI (Medicare eligible).