Medical Discovery Moves the Mod: Kean v. McRocket and Claim Triage
A Tennessee court ruling on disputed causation shows why broad medical releases and early claim decisions move your mod long before reserves harden. A $75K premium contractor can see 5 to 15 points of swing.
Medical discovery in a disputed workers' comp claim can shift your experience modification rate by 5 to 15 points on a $75,000 annual premium contractor. Under NCCI experience rating, causation disputes and broad medical-record releases affect whether a claim enters your experience period, how it's valued, and how long reserves stay open. Early claim triage, not late-stage reserve disputes, is what protects the mod.
A Tennessee appellate decision, Kean v. McRocket, landed in August 2026 and laid bare something contractors rarely connect to their mod: medical discovery can decide whether a claim even counts.
The case involved a disputed shoulder injury where causation hinged on medical records the claimant initially didn't produce. The court's ruling turned on how broadly the employer could compel release of prior treatment history. For contractors, the legal question matters less than the rating question it triggers. When causation is disputed and medical records are still being gathered, the claim is already on your worksheet.
Under NCCI's Experience Rating Plan, a claim doesn't wait for legal resolution to hit your mod. It enters your experience period based on report date and valuation timing. By the time discovery sorts out whether the injury was work-related, the reserve may have been sitting on your record for months. That reserve is what your experience modification rate is calculated against.
How disputed causation enters the mod
NCCI rules say a claim is ratable when it's reported and valued by the carrier. Disputed doesn't mean excluded. The carrier sets reserves based on available information at the time. If causation is unclear, the reserve often gets set higher to account for uncertainty. That inflated reserve flows directly into your primary loss calculation, which drives the mod.
The Kean v. McRocket situation illustrates the trap. While the parties argue over medical releases and causation, the claim ages. Reserves harden. The valuation date passes. Your next mod calculation picks up the inflated number. You can't retroactively fix it by winning the dispute later, because the mod lag means the claim already affected a rating period.
In our reviews of Southeast contractor worksheets, the most common pattern is a disputed claim that sat open for nine to 12 months with a reserve set early and never adjusted down. By the time the dispute resolves, the mod is already issued. The correction, if it comes, applies to a future period. The premium overpayment in the meantime is real.
The dollar math on a $75,000 premium contractor
Take a contractor with $75,000 in annual workers' comp premium and a mod sitting at 1.05. That's a fairly typical Southeast construction account. Here's what happens when a disputed claim with poor early triage enters the experience period.
A claim with a $40,000 reserve that should be $15,000 once causation is sorted out adds $25,000 in excess primary losses. On a contractor at this premium scale, that kind of primary loss inflation can move the mod 5 points, from 1.05 to roughly 1.10 (NCCI Experience Rating Plan manual, 2026). The annual premium impact: about $3,750.
If the reserve sits at $60,000 because the carrier is hedging against unresolved causation and broad medical uncertainty, the swing widens. The mod can move 10 points to 1.15. Annual premium impact: $7,500.
In the worst scenario, where discovery drags past the valuation date and the reserve hardens at $75,000 or more, the mod can shift 15 points to 1.20. That's $11,250 in annual premium cost from a single disputed claim that might ultimately get denied or settled for a fraction of the reserve. Use the EMR calculator to model your own numbers.
Why broad medical releases cut both ways
The Kean v. McRocket ruling touched on the scope of medical-record releases. Employers want broad releases to challenge causation. That's sound legal strategy. But broad discovery also means the carrier sees more medical history, which can push reserves up before the dispute resolves.
A carrier reviewing prior treatment records during discovery may adjust reserves upward if those records suggest pre-existing conditions or alternative causation. The reserve movement happens inside your experience period. You're fighting the legal battle on one timeline and absorbing the rating damage on another.
This is why early claim triage matters more than late-stage legal wins. The contractors who control their mod aren't the ones who win the most disputes. They're the ones who get the right medical information in front of the carrier fast, resolve causation questions before reserves harden, and close the gap between claim report and accurate valuation.
What an audit would check
An audit checks whether the reserves on your open disputed claims reflect current medical reality or stale early estimates. It looks at whether claims in your experience period have valuation dates that already passed while disputes were pending. It checks for claims where the carrier adjusted reserves during discovery but after the mod calculation cutoff. And it checks whether denied claims that still carry reserves on your worksheet have been properly zeroed out. Most contractors we review have at least one disputed claim sitting on their worksheet at a reserve that stopped making sense months ago.
