UnitedHealth Group

Reasons to avoid

1. UnitedHealth deployed an AI tool called nH Predict to deny post-acute care claims for elderly Medicare Advantage patients — despite their doctors saying care was medically necessary. The AI has a 90% error rate on appeal, meaning nine in ten denials are ultimately reversed. A federal class action lawsuit alleging breach of contract is ongoing, with a judge ruling the appeals process was so obstructed it was effectively "futile."cbsnews.com2023-11-21
2. Internal documents alleged that employees who deviated from the AI tool's denial recommendations faced discipline or termination — embedding the denial-first practice into the company's culture. One 74-year-old stroke patient whose coverage was repeatedly denied accumulated over $70,000 in out-of-pocket costs before dying at a care facility.courthousenews.com2025-02-13
3. A February 2024 ransomware attack on UnitedHealth subsidiary Change Healthcare exposed the medical and personal data of approximately 192.7 million Americans — the largest healthcare data breach ever recorded. Stolen data included Social Security numbers, diagnoses, medications, and financial information. The breach was enabled by a basic security failure: a critical system lacked multi-factor authentication. UnitedHealth paid a $22 million ransom in Bitcoin.techcrunch.com2025-01-24
4. The DOJ launched both criminal and civil fraud investigations into UnitedHealth's Medicare Advantage billing practices, focusing on systematic "upcoding" — submitting inflated or unsupported diagnoses to collect higher government payments. UnitedHealth confirmed in a July 2025 SEC filing that it is complying with both probes. Analysts describe this as the largest Medicare Advantage fraud investigation in U.S. history.cnbc.com2025-07-24
5. A separate DOJ antitrust investigation examined UnitedHealth's vertical integration of UnitedHealthcare (insurance) and Optum (care delivery), scrutinizing whether the company steers patients to its own subsidiaries while underpaying and squeezing out independent physicians and providers. The DOJ also sued to block UnitedHealth's $3.3 billion acquisition of home-health firm Amedisys on antitrust grounds.findlaw.com2025-02-27