--- type: "Bill" title: "Health care coverage: cost-sharing changes." description: "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 prohibits, except as specified, a health care service plan or a health insurer, with regard to a group contract or policy, from changing the premium rates or applicable copayments or coinsurances or deductibles during the term of a group plan contract or policy during specified time periods." jurisdiction: "us/states/ca" legislature: "California Legislature" session: "20152016" identifier: "SB 923" citation: "California SB 923 (20152016)" classification: ["bill"] subjects: ["Health care coverage: cost-sharing changes."] status: "enacted" primary_sponsors: ["Hernandez"] version_count: 6 action_count: 23 vote_count: 6 first_action: "2016-01-28" last_action: "2016-08-25" source: "openstates" source_identifier: "ocd-bill/ee8897e7-e5fb-4b95-9e01-191e01e1d7ee" source_url: "http://leginfo.legislature.ca.gov/faces/billNavClient.xhtml?bill_id=201520160SB923" source_hash: "f9728f318e3931e7ffc0fc94de5d3fa14ff9dd36444c956d1b1218242b0eed67" vintage: "2026-07-01" source_snapshot: "https://data.openstates.org/daily/2026-07-01/public.pgdump" retrieved_at: "2026-07-06" confidence: "reported" tags: ["legislation", "bill", "us-ca"] --- # California SB 923 (20152016) — Health care coverage: cost-sharing changes. 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 prohibits, except as specified, a health care service plan or a health insurer, with regard to a group contract or policy, from changing the premium rates or applicable copayments or coinsurances or deductibles during the term of a group plan contract or policy during specified time periods. ## Version chain The bill's text revisions, in order — the diff chain from filing to enrollment. 1. **01/28/16 - Introduced** (filed) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=201520160SB923&version=20150SB92399INT) 2. **05/18/16 - Amended Assembly** (committee substitute) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=201520160SB923&version=20150SB92398AMD) 3. **05/31/16 - Amended Assembly** (committee substitute) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=201520160SB923&version=20150SB92397AMD) 4. **08/25/16 - Chaptered** (committee substitute) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=201520160SB923&version=20150SB92395CHP) 5. **SB923** (committee substitute) — [source](http://leginfo.legislature.ca.gov/faces/billNavClient.xhtml?bill_id=201520160SB923) 6. **08/12/16 - Enrolled** (enrolled) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=201520160SB923&version=20150SB92396ENR) ## Votes - Do pass, but first be re-referred to the Committee on [Appropriations] — **7–0** (pass) · upper - Do pass and be re-referred to the Committee on [Appropriations] — **17–0** (pass) · lower - Do pass. — **18–0** (pass) · lower - Unfinished Business SB923 Hernandez Concurrence — **29–5** (pass) · upper - SB 923 Hernandez Senate Third Reading By WOOD — **75–0** (pass) · lower - 3rd Reading — **29–5** (pass) · upper ## Sponsors - Hernandez — primary (person) ## Timeline The legislative action history — every referral, reading, and vote. - **2016-01-28** Introduced. Read first time. To Com. on RLS. for assignment. To print. `introduction, reading-1` - **2016-01-29** From printer. May be acted upon on or after February 28. - **2016-02-18** Referred to Com. on HEALTH. `referral-committee` - **2016-03-15** Set for hearing March 30. - **2016-03-30** From committee: Do pass and re-refer to Com. on APPR. (Ayes 7. Noes 0. Page 3335.) (March 30). Re-referred to Com. on APPR. `referral-committee, committee-passage-favorable, committee-passage` - **2016-04-08** Set for hearing April 18. - **2016-04-18** From committee: Be ordered to second reading pursuant to Senate Rule 28.8. `committee-passage, reading-2` - **2016-04-19** Read second time. Ordered to third reading. `reading-2, reading-1` - **2016-05-02** Read third time. Passed. (Ayes 29. Noes 5. Page 3735.) Ordered to the Assembly. `reading-3, passage, reading-1` - **2016-05-03** In Assembly. Read first time. Held at Desk. `reading-1` - **2016-05-12** Referred to Com. on HEALTH. `referral-committee` - **2016-05-18** From committee with author's amendments. Read second time and amended. Re-referred to Com. on HEALTH. `referral-committee, reading-2, amendment-passage, committee-passage, reading-1` - **2016-05-31** From committee with author's amendments. Read second time and amended. Re-referred to Com. on HEALTH. `referral-committee, reading-2, amendment-passage, committee-passage, reading-1` - **2016-06-14** June 14 set for first hearing canceled at the request of author. - **2016-06-22** From committee: Do pass and re-refer to Com. on APPR. (Ayes 17. Noes 0.) (June 21). Re-referred to Com. on APPR. `referral-committee, committee-passage-favorable, committee-passage` - **2016-06-29** From committee: Do pass. (Ayes 18. Noes 0.) (June 29). `committee-passage-favorable, committee-passage` - **2016-06-30** Read second time. Ordered to third reading. `reading-2, reading-1` - **2016-08-04** Read third time. Passed. (Ayes 75. Noes 0. Page 5711.) Ordered to the Senate. `reading-3, passage, reading-1` - **2016-08-04** In Senate. Concurrence in Assembly amendments pending. - **2016-08-11** Assembly amendments concurred in. (Ayes 29. Noes 5. Page 4863.) Ordered to engrossing and enrolling. `committee-passage-favorable, amendment-passage` - **2016-08-16** Enrolled and presented to the Governor at 11:30 a.m. - **2016-08-25** Approved by the Governor. `executive-signature` - **2016-08-25** Chaptered by Secretary of State. Chapter 192, Statutes of 2016. ## Source OpenStates / OpenCivicData bulk snapshot [2026-07-01](https://data.openstates.org/daily/2026-07-01/public.pgdump); origin `ocd-bill/ee8897e7-e5fb-4b95-9e01-191e01e1d7ee`. Confidence: reported (aggregated from official California legislature records).