AB 1887: Prescription drug coverage for rare diseases.

Official summary

Legislative Counsel’s Digest (official, as of the latest version). Written by nonpartisan legislative staff; reproduced verbatim.

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 specified prior authorization and step therapy limitations for health care service plans and health insurers.

This bill would require a health care service plan contract or health insurance policy issued, amended, or renewed on or after January 1, 2027, to require a health care service plan or health insurer to complete prior authorization within 30 days upon initial request, as specified, for a drug approved by the United States Food and Drug Administration (FDA) for the treatment of a rare disease if the drug is prescribed by a specialist with expertise in the condition or disease being treated, the specialist has determined the drug is medically necessary, and the drug is the only FDA-approved treatment for the rare disease. 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 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.

Sponsors

Sponsors by party (alphabetical): Democratic 11 · Republican 3

“Support” is shown only as formal sponsorship recorded by the legislature. Roll-call votes are available on the official bill page.

Recent official actions

1. September 27, 2026Chaptered by Secretary of State - Chapter 557, Statutes of 2026.
2. September 27, 2026Approved by the Governor.
3. September 10, 2026Enrolled and presented to the Governor at 3 p.m.
4. August 30, 2026Senate amendments concurred in. To Engrossing and Enrolling. (Ayes 78. Noes 0. Page 6932.).
5. August 30, 2026In Assembly. Concurrence in Senate amendments pending.
6. August 30, 2026Read third time. Passed. Ordered to the Assembly. (Ayes 40. Noes 0.).
7. August 24, 2026Read second time. Ordered to third reading.
8. August 21, 2026Read third time and amended. Ordered to second reading.
9. August 17, 2026Read second time. Ordered to third reading.
10. August 13, 2026From committee: Amend, and do pass as amended. (Ayes 7. Noes 0.) (August 13).
11. August 13, 2026Read second time and amended. Ordered returned to second reading.
12. August 3, 2026In committee: Referred to APPR. suspense file.