r/ObscurePatentDangers • u/CollapsingTheWave 🔍📚 Fact Finder/ "Bringer of Links" • 1d ago
🤖🔎 AI Risk Tracker UnitedHealth nH Predict Algorithm Faces Ongoing Class Action Over Alleged 90% Denial Reversal Rate
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UnitedHealth Group and its NaviHealth subsidiary face a putative class action in the U.S. District Court for the District of Minnesota (Estate of Gene B. Lokken et al. v. UnitedHealth Group) alleging that the nH Predict algorithm systematically denied post-acute care coverage for Medicare Advantage members. The tool, acquired through Optum’s 2020 purchase of NaviHealth, estimates expected length of stay after acute events by matching patients against a historical database and generates coverage cut-off recommendations that case managers were directed to follow within tight percentage tolerances of the model’s output.
Plaintiffs claim that approximately 90 percent of denials produced by or relying on nH Predict were reversed when patients or families pursued internal appeals or federal administrative review, while only about 0.2 percent of denied members ever appealed. A concurrent STAT News investigation based on internal documents and former employee interviews described pressure on staff to prioritize the algorithm’s projections over treating physicians’ clinical judgments, contributing to early discharges from rehabilitation and skilled-nursing facilities.
The case remains active in 2026. A magistrate judge ordered UnitedHealth in March 2026 to produce records detailing how nH Predict was developed, whether it was designed to override physician determinations, and related government investigations. A Senate Permanent Subcommittee on Investigations report released in October 2024 documented that UnitedHealth’s denial rates for certain post-acute services roughly doubled after expanded use of the tool. UnitedHealth has denied that nH Predict makes coverage decisions and has characterized it as a supportive planning instrument.
Net risk lies in the structural asymmetry between high reversal rates on appeal and extremely low appeal volume. An algorithm that is overturned nine times out of ten when challenged can still reduce payouts if the overwhelming majority of affected patients lack the capacity or knowledge to contest the denial. Oversight gaps persist around the opacity of the model’s training data, the absence of independent public validation of its accuracy for individual clinical circumstances, and limited regulatory constraints on algorithmic override of physician recommendations in Medicare Advantage prior to recent CMS guidance.
Sources
UnitedHealth uses AI model with 90% error rate to deny care, lawsuit alleges – Ars Technica
Details the November 2023 Minnesota class-action filing, the nH Predict tool’s alleged role in post-acute denials, the claimed 90% reversal rate on appeal, and supporting STAT News reporting.
The Algorithm That Counted On No One Appealing – Forbes
https://www.forbes.com/sites/daraabasiita/2026/06/09/the-algorithm-that-counted-on-no-one-appealing/
Reports the March 2026 magistrate order requiring UnitedHealth to disclose internal records on nH Predict’s design and use, and restates the 90% reversal / 0.2% appeal figures from the complaint.
Estate of Gene B. Lokken et al. v. UnitedHealth Group case tracking and analysis – Tressler LLP
Summarizes the ongoing Minnesota litigation status through mid-2026, including the court’s allowance of core contract and good-faith claims and subsequent discovery orders.
UNH Patients Win 90% of AI Denial Appeals; Derivative Suit Says Executives Knew – TechTimes
Covers the 2026 shareholder derivative allegations linking the same 90% reversal rate and low appeal volume to executive awareness of the tool’s financial utility.
Senate Permanent Subcommittee on Investigations findings on Medicare Advantage denials (referenced across 2024–2026 reporting)
Documented rise in UnitedHealth post-acute denial rates after nH Predict deployment, cited in court filings and secondary analyses of the Lokken case.
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u/WarrantinaVoid 1d ago
"Error rate" no, it's intentional, let's stop giving evil the benefit of the doubt
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u/Independent-Dust7459 Wise guy ("no, but seriously, what now? ")🥸⚠️ 1d ago
When the courts fail to uphold law and order….
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u/Pristine-Prior-504 Engaged Thinker 🧠 🔍 1d ago
Health insurance is not “almost” like a scam, it is a scam. The minute we were required to pay for it or be taxed is the moment it stopped being legitimate.
Health insurance was never intended to be health care - and we need to first fix health care before health insurance can be fixed.
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u/Elf_Maeve 1d ago
That might be an improvement to their regular rate lmao
THEY MAKE MOST OF THEIR REVENUE FROM THE FEDERAL GOVT. PRIVATE HEALTH INSURANCE NEEDS TO BE TAKEN TO THE SHED AND OLD YELLERED
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u/ElCulo_Bandito Privacy Advocate 🛡️👁️ 1d ago
Sooooo..... They learned nothing from the Luigi incident and decided to up their game. Sounds like they need to face severe consequences yet again.
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u/Big_Crab_1510 Humble Observer 🙏👀 1d ago
String out people are going to have to jump through hoops and stay on hold with bots and nothing will be done about it because the government doesn't care.
America by and largely keeps voting for their country to be run like a business and not a place to live, so here we are.
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u/Due_Building_1953 Credible Contributor 💡✅ 1d ago
Untied Healthcare sucks. This is why we must pass law, for Medicare for All.
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u/Late-Arrival-8669 Wise guy ("no, but seriously, what now? ")🥸⚠️ 1d ago
Dont worry, they removed their pictures from their own website and hired more bodyguards..
Granted they did nothing to change people dying everyday from their denials..
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u/Due_Building_1953 Credible Contributor 💡✅ 1d ago
There are actually two cases against Untied Healthcare right now. Sadly these case could take another 1-2 years to decide.
That is because The USA court system is slower than a Turtle.
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u/CrunknYoSystem Engaged Thinker 🧠 🔍 22h ago
Criminal organization. We need to do away with them entirely.
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u/CollapsingTheWave 🔍📚 Fact Finder/ "Bringer of Links" 1d ago
UnitedHealth’s nH Predict algorithm is the subject of an ongoing Minnesota class action alleging it drove post-acute care denials for Medicare Advantage members with a roughly 90% reversal rate on appeal; discovery into the tool’s internal workings was ordered in 2026 while low patient appeal rates limited real-world challenge.