Regulating Payer Algorithms: How State and Federal Laws Curb Automated Claim Denials

Commercial health insurers have faced fierce legal and regulatory scrutiny for deploying automated algorithms that deny medical claims and prior authorizations in seconds without human clinical review. A wave of new state statutes and federal guidelines mandates that licensed medical professionals personally review any automated denial.

The controversy of automated algorithmic claim denials

In 2023 and 2024, investigative reporting and federal congressional inquiries exposed a deeply troubling practice across several major commercial health insurers: the deployment of automated algorithmic systems that review and deny medical claims in batch. Systems were documented reviewing hundreds of claims simultaneously, generating clinical denials in an average of 1.2 seconds per patient file without a human physician ever opening the patient's medical chart.

Physicians and patient advocates expressed outrage, pointing out that patients with debilitating spinal stenosis, pediatric speech delays, and cancer therapies were denied medically necessary care by uncalibrated algorithms optimized solely to control insurer loss ratios.

The statutory response: California SB 1120 and nationwide legislation

In response to public outcry, state legislatures moved aggressively to regulate payer algorithms. Leading the nation, California enacted landmark statute Senate Bill 1120 (SB 1120), signed into law to regulate algorithmic utilization review.

Under SB 1120 and companion statutes enacted across New York, Pennsylvania, and Maryland, health insurers are strictly prohibited from utilizing artificial intelligence or automated decision-making software to deny, reduce, or modify healthcare services. While insurers may use algorithms to streamline administrative routing or approve claims, any decision to deny coverage based on medical necessity must be personally reviewed and executed by a licensed, qualified physician practicing in the relevant clinical specialty.

Federal CMS regulations protecting Medicare Advantage patients

At the federal level, the Centers for Medicare & Medicaid Services (CMS) reinforced these protections through regulatory guidance governing Medicare Advantage (MA) plans. Under finalized CMS rules, MA plans are prohibited from using proprietary internal algorithms to deny coverage that traditional Medicare would cover.

Furthermore, CMS mandates that insurers disclose the exact clinical criteria used in utilization management software, prohibiting proprietary 'black box' coverage rules and requiring plans to grant physicians direct access to peer-to-peer discussions with human medical directors.

How regulatory shifts empower practice appeal workflows

These statutory developments provide significant leverage for medical practice revenue cycle teams fighting improper payer denials:

Challenging algorithmic rejections: Practices can cite SB 1120 and state insurance codes to immediately overturn denials issued without documented physician review.
Demanding reviewer credentials: Clinics can require insurers to disclose the name, state medical license, and specialty credentials of the reviewing physician who signed the denial.
Reporting statutory non-compliance: Practices can file formal complaints with state insurance commissioners when payers issue automated rejections without human clinical oversight.

How Fluent supports practice insurance operations

Fluent stands firmly on the side of healthcare providers and patients. Fluent Assistant and its administrative tools help clinic staff organize complete clinical documentation packets, ensuring that authorization requests contain the robust, source-verified clinical evidence necessary to withstand payer scrutiny.

By structuring patient clinical context and tracking authorization milestones in staff worklists, Fluent helps practices maintain compliant, efficient workflows that hold commercial payers accountable to the law.

Sources & reporting notes

Published November 7, 2026. Sources are linked above; operational recommendations are Fluent’s editorial analysis.