Insurance companies are increasingly infuriating providers and the RCM companies that support them by using a shady practice of “automatic down coding.” This is the systematic reduction in a level of an E&M code or the severity level of hospital and facility stays in order to pay lower reimbursement rates. It is hard to catch, as the downcode is often flagged only by a remark code in EOBs. Healthcare practitioners are taking note – and getting loud and legal.
In 2025 and 2026, lawsuits and legal actions against insurance companies for “automatic down-coding” surged, and it is expected to continue. This trend is largely driven by the adoption of artificial intelligence (AI) algorithms and new “severity-based” payment policies. In this era of continued financial pressure – tactics like this only serve to further complicate the stability for medical practices.
The following are the major lawsuits and regulatory legal actions filed or reaching critical stages in 2025 and 2026:
1. Jefferson Health vs. Aetna (April 2026)
One of the most significant down-coding lawsuits was filed on April 6, 2026, by Philadelphia-based Jefferson Health in the Pennsylvania Eastern District Court.
- The Allegation: The lawsuit challenges Aetna’s “level of severity inpatient payment policy,” which went into effect on January 1, 2026. Jefferson Health alleges that Aetna is automatically down-coding inpatient hospital stays of 1 to 4 midnights to “observation-level” (outpatient) rates, even when physicians have documented the necessity for inpatient care.
- Legal Basis: The suit argues this violates the CMS “Two-Midnight Rule” and breaches negotiated provider contracts.
- Source: Fierce Healthcare (April 7, 2026)
2. Ongoing UnitedHealth Group “nHance” AI Class Action (2025–2026 Updates)
While originally filed in late 2023, this major class action has seen pivotal legal rulings throughout 2025 and 2026.
- The Allegation: The lawsuit alleges UnitedHealthcare (UHC) uses the nHance (formerly NaviHealth) AI algorithm to systematically deny or down-code post-acute care (such as skilled nursing facility stays) for Medicare Advantage members.
- Recent Action: In March 2026, a federal judge ordered UnitedHealth to produce extensive internal documents, including the source code for the AI and data on its denial rates, which reportedly doubled after the tool’s implementation.
- Source: Becker’s Payer Issues (March 11, 2026)
3. Maryland Insurance Administration vs. Cigna (March 2026)
In a landmark regulatory legal action, the Maryland Insurance Administration (MIA) issued a formal order against Cigna in March 2026.
- The Action: Cigna was fined $80,000 and ordered to immediately cease its “Policy R49,” an automatic down-coding policy implemented in October 2025.
- Details: The policy automatically reduced high-level Evaluation and Management (E/M) codes (e.g., 99215 to 99214) without physician notification or review of medical records. The regulator ordered Cigna to reprocess all claims impacted since late 2025.
- Source: Texas Dental Association/ADA News (April 7, 2026)
4. California Medical Association vs. Anthem Blue Cross (2026)
As of early 2026, Anthem Blue Cross of California is facing a formal legal challenge and regulatory review from the California Department of Managed Health Care (DMHC) and the California Medical Association (CMA).
- The Conflict: Anthem attempted to implement a new “pre-payment review” policy in February 2026 that would automatically down-code E/M codes to a “standard” level if they were flagged by an algorithm.
- Current Status: Due to legal pressure, Anthem paused the policy in April 2026 pending a full regulatory investigation into its legality under California’s fair claims processing laws.
- Source: Becker’s Hospital Review (February 27, 2026)
5. Dr. John T. McMahan vs. Major Insurer (Settled 2025)
A notable individual “provider fight-back” case reached a settlement in late 2025.
- The Allegation: A Chicago-based physician sued a major national insurer (unnamed in some reports due to settlement terms but identified as a “large commercial payer”) for the systematic “bundling and down-coding” of surgical claims.
- Outcome: The case settled for $141,000 in back payments, serving as a template for other small practices to file individual lawsuits against automated coding reductions.
- Source: Medical Economics (April 7, 2026)
Summary Table: Key 2025-2026 Actions
| Defendant | Date Filed/Action | Type of Down-coding Alleged | Current Status |
| Aetna | April 2026 | Inpatient to Observation (Severity-based) | Active (PA Federal Court) |
| Cigna | March 2026 | Automatic E/M Code Reductions (Policy R49) | Ordered to Reprocess/Fined |
| UnitedHealthcare | March 2026 (Order) | AI-driven Care Level Reductions | Active Discovery Phase |
| Anthem (BCBS) | Feb–April 2026 | Algorithmic E/M Code Reductions | Policy Paused / Under Review |
| Humana | Oct 2025 | Optometry/Vision Code Down-coding | Agreement reached to stop |