What the Lawsuit Against UnitedHealthcare Actually Alleges
In November 2023, the case, Estate of Lokken v. UnitedHealth Group, was filed in the U.S. District Court for the District of Minnesota by the families of two deceased Medicare Advantage members. The complaint is majorly directed on nH Predict, a tool built by naviHealth, an Optum subsidiary that UnitedHealth acquired in 2020 and renamed Home & Community Care in 2024.
According to the complaint, nH Predict draws on a database of about 6 million patient records to estimate how many days of post-acute care a patient should need, based on diagnosis, age, living situation, and physical function. The plaintiffs say UnitedHealthcare used that estimate to cut off payment on a set schedule, regardless of what the treating physician had ordered. When families appealed, the complaint says more than 90% of those denials were reversed, either internally or by a federal administrative law judge. A STAT News investigation cited in the lawsuit also reported that UnitedHealth set an internal goal for staff to keep patient stays within 1% of what nH Predict projected.
In February 2025, a federal judge dismissed five of the seven original claims but let the case move forward on breach of contract and breach of the implied covenant of good faith and fair dealing, since UnitedHealthcare's own coverage documents promise that clinical staff and physicians make coverage decisions. In March 2026, a magistrate judge ordered UnitedHealthcare to produce documents dating back to January 2017 covering its post-acute care policies, its analysis of nH Predict, and any government inquiries into its use of AI in claims review. Separately, Maryland's attorney general filed a related suit against UnitedHealth Group and Optum seeking $380 million in damages.
Estate of Lokken v. UnitedHealth Group was filed by families of two deceased Medicare Advantage members.
A federal judge dismissed five of seven original claims while allowing breach of contract and implied covenant claims to proceed.
A magistrate judge ordered UnitedHealthcare to produce documents concerning post-acute care policies, nH Predict, and government inquiries dating back to January 2017.
UnitedHealthcare disputes the core allegations. An Optum spokesperson has said publicly that nH Predict is a planning guide shared with providers and families, not a tool used to make coverage decisions, and that Medicare criteria and licensed physicians still make the final call.
Why UnitedHealthcare AI Claim Denials Matter for Your Revenue
Whatever the court eventually decides about intent, the effect on the ground is the same for providers right now. Post-acute care claims for Medicare Advantage patients are getting denied on tighter timelines, appeals take longer to resolve, and billing staff spend hours redoing work that used to be routine when documentation lined up with medical necessity.
Here's the part that's fully within your control: most of these denials are preventable before submission, not after.
Practices we work with run at a 98% first-pass clean claims rate and a 2% denial rate, because every claim is checked against payer-specific criteria before it goes out the door, not patched after it bounces back. When a UnitedHealthcare denial does land, especially one tied to post-acute care length of stay, our coders pull the exact denial code, match it against the physician's documented medical necessity notes, and get the corrected appeal back out within 3 business days.
Why this matters: A denial is not simply a billing inconvenience. It can create additional administrative work, delay reimbursement, and require your team to reconstruct the clinical and billing record needed for an effective appeal.
What to Do If UnitedHealthcare Denies a Claim Tied to nH Predict
- Ask the payer, in writing, whether a predictive tool was used in the review, and request the specific clinical reasoning behind the denial.
- Pull the physician's documented plan of care and compare it directly against CMS coverage criteria for the service in question.
- File the appeal before the deadline listed in the denial letter. Delayed appeals are the ones most likely to stay denied.
- Keep a record of every post-acute care denial for Medicare Advantage patients. A pattern across several claims carries more weight than any single denial if you need to escalate.
The Bottom Line
UnitedHealthcare says physicians, not software, make coverage decisions. The plaintiffs say the opposite, and a federal judge has already let part of the case move forward. The two sides will keep fighting this out in court for a while yet.
Your practice does not have the option to wait for a verdict before your claims get paid. A2Z Billings has recovered more than $48 million in denied and underpaid claims for practices across 45-plus specialties, with a dedicated coder who learns your payer's denial patterns instead of treating every claim the same way.
If UnitedHealthcare denials are cutting into your collections, book a free claims audit and we'll show you exactly where the revenue is slipping through.
Frequently Asked Questions
What is NH Predict?
NH Predict is an AI tool built by naviHealth, an Optum subsidiary UnitedHealth acquired in 2020 and later renamed Home & Community Care. It uses a database of roughly 6 million patient records to estimate how many days of post-acute care a Medicare Advantage patient should need.
Has a court ruled that UnitedHealthcare did anything wrong?
Not yet. A federal judge allowed the breach of contract and good faith claims to proceed in February 2025 and ordered broad document discovery in March 2026, but the case has not gone to trial, and UnitedHealthcare denies the allegations.
Does this lawsuit apply to all UnitedHealthcare plans?
No. It centers on post-acute care claims, such as skilled nursing and home health, for Medicare Advantage members specifically, not commercial or employer-sponsored plans.
What does UnitedHealthcare say about the allegations?
Optum says nH Predict is a planning guide for providers and families, not a coverage decision tool, and that licensed physicians make determinations using CMS criteria.
How can a practice tell if a denial was algorithm-driven?
Ask the payer directly, in writing, whether a predictive tool factored into the review, and compare the timing and wording of the denial against the physician's documented plan of care. A fast denial with generic "length of stay" language is worth flagging.
How can a billing partner help with denials tied to AI review?
We check post-acute and Medicare Advantage claims against payer-specific criteria before they're submitted, and when a denial comes in anyway, we pull the exact denial code and get a corrected appeal out within 3 business days rather than letting it sit in a queue.
Suggested Photos
Since these need to be licensed stock images rather than pulled from search results, here are concepts and search terms to use on your stock library:
Pairs with the intro.
Search: "doctor reviewing insurance denial letter" or "physician reading medical documents desk."Pairs with the lawsuit section, since the case centers on Medicare Advantage post-acute care.
Search: "elderly patient home health caregiver" or "senior physical therapy rehabilitation."Pairs with the "what the lawsuit alleges" section.
Search: "gavel legal documents court" or "federal courthouse exterior."Pairs with the "why this matters for your revenue" section.
Search: "medical biller office computer" or "healthcare administrative staff desk."Pairs with the "what to do" checklist section.
Search: "medical claims dashboard screen" or "healthcare software laptop close up."Good as a featured image alternative if you want something less literal than a courtroom shot.
Search: "healthcare technology abstract background" or "digital health data visualization."Avoid anything showing the UnitedHealthcare logo, brand colors, or real identifiable people tied to the case, since those raise trademark and privacy issues on a third-party blog.