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SB 503CALIFORNIASession 20252026
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California SB 503 requires AI developers and healthcare providers to identify and mitigate bias in clinical decision-making tools

Original title: Health care services: artificial intelligence.

August 30, 2026

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The Frame

What this does

This bill establishes new accountability standards for AI tools used in medical settings, directly impacting how healthcare providers and patients interact with automated systems that influence diagnosis and treatment decisions.

Who is mentioned in the record

Potentially affected actors named in the source documents. Mention is not a position.

AI developers

They must create documentation on system risks and make efforts to mitigate biased impacts in their software.

Healthcare providers

They must regularly monitor AI systems used in their practice and take steps to mitigate any identified risks of bias.

Patients

They are the subjects of the clinical decisions influenced by the AI systems regulated under this bill.

What changed

Last recorded activity August 30, 2026.

What's next

Introduced.

Summary

SB 503 mandates that developers and users of AI-driven s identify and reduce the risk of biased impacts in medical diagnosis and treatment recommendations. The bill requires developers to provide documentation on intended uses and risks, while healthcare providers must regularly monitor these systems for bias.

Key Facts

You don't have to trust us. Each fact below is taken straight from the official document - click any one to see the exact passage, highlighted in the original.

Why It Matters

This bill establishes new accountability standards for AI tools used in medical settings, directly impacting how healthcare providers and patients interact with automated systems that influence diagnosis and treatment decisions.

Frequently Asked Questions

What is a 'clinical decision support system' under this bill?
It is an artificial intelligence system that produces a prediction, classification, recommendation, evaluation, or analysis to help with medical diagnosis or treatment.
Who is responsible for checking AI systems for bias?
Both the developers who create the AI and the s (such as clinics or hospitals) who use the AI in their health programs are responsible for identifying and mitigating bias.

News Coverage

No news coverage found yet. Articles are indexed twice daily.

Lobbying Activity

AARP

$4,110,000

2026

HEALTH ISSUESMEDICARE/MEDICAIDLAW ENFORCEMENT/CRIME/CRIMINAL JUSTICEPHARMACY

P.L. 119-21, One Big Beautiful Bill Act H.R. 8867, Planning for Long-term Aging Needs (PLAN) Act H.R. 5861, Legacy Act of 2025 H.R. 9393, the Lower Costs, More Transparency Act. H.R. 9396, the Prior Authorization Accountability Act. S. 4916, the Aging with Artificial Intelligence Act. H.R. 8100, Safe Staffing Saves Lives Act. S. 3886, Nurses Belong in Nursing Homes Act. H.R. 6766/S. 3492, the Essential Caregivers Act of 2025. H.R. 7966/S. 4118, Hospice Care Accountability, Reform, and Enforcement (Hospice CARE) Act. S. 2120, the Older Americans Act Reauthorization Act of 2025 H.R. 5575, the Firefighters Assisting Seniors to Emergency Response (FASTER) Act of 2025. H.R. 3954/S. 4641, Improving Access to Medicare Coverage Act. H.R.5554/S.2831, Stand Strong for Medicare Act. S. 3439/H.R. 6735, Connecting Caregivers to Medicare Act and efforts related to the bill S. 1227/H.R. 2491, Alleviating Barriers for Caregivers Act S. 668/H.R. 3183, Supporting Access to Falls Education and Prevention and Strengthening Training Efforts and Promoting Safety Initiatives (SAFE STEPS) for Veterans Act of 2025 CMS-1851-P, Hospice Proposed rule. CMS-1843-P, Skilled Nursing Facility Proposed rule. CMS-1844-P, Home Health Proposed rule. No bill number. Health care transparency. No bill number. Discussed use of artificial intelligence and health data technology. No bill number. Discussed health-related policies and activities around the fall respiratory virus season. No bill number. Discussed health insurance affordability proposals. No bill number. Discussed Nursing Home staffing standards, safety, and quality. No bill number. Discussed Nursing home transparency and ownership requirements. No bill number. Discussed home health, hospice, and long-term care. No bill number. Discussed falls prevention. No bill number. Discussed social isolation. No bill number. Discussed HUD Assisted Living Requirements No bill number. Discussed family caregiving. No bill number. Discussed AARP paper on Medicare Caregiver Training Services. No bill number. Discussed Medicaid community engagement interim final rule, including the family caregiver exemption. No bill number. Discussed the paid direct care workforce in long-term care. No bill number. Discussed the unaffordability of long-term care. No bill number. Discussed Money Follows the Person Rebalancing Demonstration Program and Medicaid HCBS spousal impoverishment protections. No bill number. Discussed Medicaid fraud and family caregivers, Medicaid self-direction programs. No bill number. Discussed sandwich generation family caregiver hearing and submitted a statement for the record discussing family caregivers and sandwich generation caregivers, programs that support them, AARP caregiving resources, and federal policies to support sandwich generation caregivers and caregivers more broadly. No bill number. Discussed long-term care. No bill number. CMS-2453-NC; Medicaid Program; 2028 Medicaid Home and Community-Based Services Quality Measure Set Submitted comments No bill number. Discussed expanding access to home care. No bill number. Discussed the increasing cost of home care No bill number. Discussed HSA use for telehealth chronic care management services/subscriptions. No bill number. Discussed artificial intelligence and technology

MONUMENT ADVOCACY

on behalf of HEALTH INNOVATION ALLIANCE

Discoveries

Patterns POLISCOPE noticed across the record. These are observations to investigate, not conclusions.

policy shift90% confidence

Expansion of AI Oversight

The bill shifts the regulatory focus from merely requiring disclaimers on AI-generated communications to requiring active bias mitigation in clinical decision-making tools.

Connected Entities

otherClinical decision support systemAI systems that produce predictions, classifications, or recommendations aiding Map →
otherClinical Decision Support SystemAI systems that produce predictions, classifications, or recommendations for diaMap →

Sources

Open source document

openstates.org

Analysis Score

0–100
  • Significance80
    How much this matters to a regular citizen
  • Controversy40
    Intensity of disagreement among stakeholders
  • Entertainment10
    Compellingness for a non-policy-wonk reader
  • Buzz30
    Current news / social attention level

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