California SB503: Health care services: artificial intelligence.

What the bill says

An act to add Chapter 25.3 (commencing with Section 22758) to Division 8 of the Business and Professions Code, relating to health care services. health care services Health care services: artificial intelligence…

From the chaptered text, September 30, 2026:

An act to add Chapter 25.3 (commencing with Section 22758) to Division 8 of the Business and Professions Code, relating to health care services. health care services Health care services: artificial intelligence. Existing law requires a health facility, clinic, physician’s office, or office of a group practice that uses generative artificial intelligence to generate written or verbal patient communications pertaining to patient clinical information, as defined, to ensure that those communications include both (1) a disclaimer that indicates to the patient that a communication was generated by generative artificial intelligence, as specified, and (2) clear instructions describing how a patient may contact a human health care provider, employee, or other appropriate person. Existing law exempts from this requirement a communication read and reviewed by a human licensed or certified health care provider. This bill would require developers and deployers, as defined, of an artificial intelligence system that produces a prediction, classification, recommendation, evaluation, or analysis that aids decisionmaking related to diagnosis or treatment, known as a clinical decision support system, to make reasonable efforts to identify clinical decision support systems developed for use by deployers that are known or have a reasonably foreseeable risk for biased impacts resulting from deployment of the system in health programs or activities. The bill would require developers to make a statement describing the intended …

Read the full official text

Sponsors

• Akilah Weber Pierson (D, SD39) · primary sponsor
• Lola Smallwood-Cuevas (D, SD28)
• Laura Richardson (D, SD35)
• Mia Bonta (D, AD18)
• Isaac Bryan (D, AD55)
• Sade Elhawary (D, AD57)
• Mike Gipson (D, AD65)
• Corey Jackson (D, AD60)
• Tina McKinnor (D, AD61)
• Rhodesia Ransom (D, AD13)
• LaShae Sharp-Collins (D, AD79)
• Lori Wilson (D, AD11)

Latest actions

1. September 30, 2026: Chaptered by Secretary of State. Chapter 857, Statutes of 2026.
2. September 30, 2026: Approved by the Governor.
3. August 30, 2026: Enrolled and presented to the Governor at 6 p.m.
4. August 25, 2026: Assembly amendments concurred in. (Ayes 39. Noes 0. Page 5739.) Ordered to engrossing and enrolling.
5. August 25, 2026: Assembly amendments concurred in. (Ayes 39. Noes 0.) Ordered to engrossing and enrolling.
6. August 24, 2026: In Senate. Concurrence in Assembly amendments pending.
7. August 24, 2026: Read third time. Passed. (Ayes 70. Noes 1. Page 6384.) Ordered to the Senate.
8. August 24, 2026: Read third time. Passed. Ordered to the Senate.
9. August 19, 2026: Read third time and amended.
10. August 19, 2026: Ordered to third reading.

Votes

• Unfinished Business SB503 Weber Pierson et al. Concurrence (August 25, 2026): 39 yea, 0 nay, passed
• SB 503 Weber Pierson Senate Third Reading By Wilson (August 24, 2026): 70 yea, 1 nay, passed
• Do pass. (August 29, 2025): 15 yea, 0 nay, passed
• Do pass as amended and be re-referred to the Committee on [Appropriations] (July 16, 2025): 13 yea, 0 nay, passed
• Do pass as amended and be re-referred to the Committee on [Privacy and Consumer Protection] (July 8, 2025): 16 yea, 0 nay, passed
• Special Consent SB503 Weber Pierson et al. (May 29, 2025): 38 yea, 0 nay, passed

Common questions

What is SB503?

SB503 is a bill in the California Legislature (2025-2026 Regular Session): Health care services: artificial intelligence.

What does SB503 do?

In its own words: An act to add Chapter 25.3 (commencing with Section 22758) to Division 8 of the Business and Professions Code, relating to health care services. health care services Health care services: artificial intelligence…

What is the status of SB503?

Chaptered as of September 30, 2026. Latest action: Chaptered by Secretary of State. Chapter 857, Statutes of 2026. (September 30, 2026).

Who sponsored SB503?

Akilah Weber Pierson (D, SD39), with 11 co-sponsors.

Where is the official record for SB503?

On the California Legislature website: https://leginfo.legislature.ca.gov/faces/billNavClient.xhtml?bill_id=202520260SB503