AB 2431 California Assembly · 2025-2026 Regular Session

Downcoding medical claims.

Summary
Existing law, the Knox-Keene Health Care Service Plan Act of 1975, provides for the licensure and regulation of health care service plans by the Department of Managed Health Care, and makes a willful violation of the act a crime. Existing law provides for the regulation of health insurers by the Department of Insurance. Existing law sets forth requirements by which a health care service plan or health insurer reimburses a provider for health care services. This bill would require a determination to downcode a claim, which is the unilateral alteration by a payer of the service or procedure code submitted on a claim resulting in a lower payment, to include a documented review of the clinical information supporting the billed service. The bill would set forth requirements for and limitations of downcoding decisions, and, if a claim is downcoded, would require a plan or insurer to provide a billing provider with specified information and a clear and accessible process for disputing downcoded claims. The bill would prohibit a plan or insurer from using downcoding practices in a targeted or discriminatory manner against physicians or other health care providers who routinely treat patients with high acuity, complex, or chronic conditions, and would authorize the departments to take action against a plan or insurer that engages in a pattern or practice of discriminatory downcoding or that otherwise violates these provisions. Because a willful violation of these provisions by a health care service plan would be a crime, the bill would impose a state-mandated local program. The bill would require the departments to collect data on coding and claims adjustment practices, evaluate the information, and submit a report with specified information to the Legislature. The California Constitution requires the state to reimburse local agencies and school districts for certain costs mandated by the state. Statutory provisions establish procedures for making that reimbursement. This bill would provide that no reimbursement is required by this act for a specified reason.
Bill status in committee 1 of 4 stages cleared
Introduction
Feb 2026
Committee Review
Floor Vote
Governor
Introduced Feb 20, 2026 Last action May 14, 2026
Maddy AI version diff · 2 comparisons

What changed between versions

02/20/26 - Introduced 04/09/26 - Amended Assembly · 4 edits · Apr 9, 2026
MODERATE
The amended version significantly softens the bill's approach to automated downcoding for health care service plans by removing the explicit prohibition on using automated tools and replacing it with a requirement that any downcoding determination include a documented clinical review. A new data collection and legislative reporting requirement was added for both the Department of Managed Health Care and the California Department of Insurance. Assembly Member Aguiar-Curry was added as coauthor.
Scope change
The bill's regulatory approach shifted from an outright ban on automated downcoding for health care service plans to a performance-based standard requiring documented clinical review. Insurers remain subject to the explicit automated tool prohibition. The addition of mandatory data collection and legislative reporting expands the regulatory oversight scope for both departments.
REQUIREMENT

For health care service plans (Section 1371.01), the introduced version explicitly prohibited using an automated process, system, or tool to downcode a claim and required decisions be made only by a licensed physician or competent licensed health care professional. The amended version removes both of these requirements and replaces them with a single requirement: any determination to downcode must include a documented review of the clinical information supporting the billed service, evaluated against national coding guidelines (CPT) and standards from recognized medical societies, federal regulatory bodies, and major credentialing organizations.

ENFORCEMENT

A new subdivision (f) in both Section 1371.01 (Health and Safety Code) and Section 10123.148 (Insurance Code) requires the Department of Managed Health Care and the California Department of Insurance, respectively, to collect data on coding and claims adjustment practices including the percentage of adjusted claims, the percentage adjusted using automated systems, dispute rates, and dispute outcomes. Each department must evaluate this information and submit a report to the Legislature demonstrating the prevalence and impact of downcoding and upcoding on the claims process, cost of care, financial viability of provider practices, and care delivery.

SCOPE

The Insurance Code section (10123.148) for insurers retains the explicit prohibition on using automated tools to downcode in subdivision (a)(1), but adds a parallel documented clinical review requirement. This creates an asymmetry: insurers are still banned from automated downcoding, while health care service plans are no longer explicitly banned but must meet the documented review standard.

TECHNICAL

Assembly Member Aguiar-Curry was added as a coauthor of the bill.

Floor votes

How they voted

No floor votes recorded yet.
Full legislative history

Actions timeline

Total actions
9
Key actions
3
Committee
6
Amendments
2
May 14, 2026
Lower · Passed
In committee: Held under submission.
lower
May 6, 2026
Committee
In committee: Set, first hearing. Referred to APPR. suspense file.
lower
Apr 13, 2026
Committee
Re-referred to Com. on APPR. pursuant to Assembly Rule 96.
lower
Apr 13, 2026
Committee
Re-referred to Com. on P. & C.P.
lower
Apr 9, 2026
Lower · Passed
Read second time and amended.
lower
Apr 8, 2026
Introduced
From committee: Amend, and do pass as amended and re-refer to Com. on P. & C.P. (Ayes 16. Noes 0.) (April 7).
lower
Mar 9, 2026
Committee
Referred to Coms. on HEALTH and P. & C.P.
lower
Feb 21, 2026
Lower · Passed
From printer. May be heard in committee March 23.
lower
1 primary · 1 co-sponsor

Sponsors