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UnitedHealth AI Denial Lawsuit Proceeds as nH Predict Faces 90% Error-Rate Allegation

September 18, 2026 at 17:09 EDT

Healthcare
Policy & Regulation

A federal lawsuit over UnitedHealth's use of nH Predict has put a stark allegation at the center of the AI-in-healthcare debate: plaintiffs say denials tied to the tool were reversed more than 90% of the time when patients appealed. UnitedHealth says nH Predict is a care-planning guide, not a coverage-decision system, and that decisions are based on Medicare rules and plan terms.

2026 · UnitedHealth case

AI denial claim under scrutiny

A lawsuit says nH Predict helped cut off post-acute care, with more than 90% of appealed denials allegedly reversed. UnitedHealth says the tool guides care planning and does not make coverage decisions.

90%+

Appeal reversal allegation

~0.2%

Denied members who generally appeal

2 of 7

Claims continuing after dismissal order

Patient cases cited for the tool

Appealed denials, as alleged

Reversed
>90%

Not reversed
<10%

The figure is an allegation based on appealed denials, not a published model-accuracy benchmark.

Disputed decision path

Patient profile

→

nH Predict estimate

→

Coverage review

→

Appeal or out-of-pocket care

Regulatory guardrail

Prediction alone cannot end post-acute care

Individual medical history must be considered.

Physician recommendations and clinical notes matter.

Criteria cannot quietly shift through AI use.

Company position

Planning guide

UnitedHealth says nH Predict informs providers, families and caregivers, while coverage decisions follow CMS criteria and plan terms.

Plaintiffs' claim

Clinician override

The estates allege the model superseded treating physicians and drove premature denials of post-acute care.

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