---
type: "Bill"
title: "Insurance: health insurers; equitable coverage for behavioral health and substance use disorder treatment; provide for. Amends 1956 PA 218 (MCL 500.100 - 500.8302) by adding sec. 3406hh."
description: "Insurance: health insurers; equitable coverage for behavioral health and substance use disorder treatment; provide for. Amends 1956 PA 218 (MCL 500.100 - 500.8302) by adding sec. 3406hh."
jurisdiction: "us/states/mi"
legislature: "Michigan Legislature"
session: "2023-2024"
identifier: "SB 27"
citation: "Michigan SB 27 (2023-2024)"
classification: ["bill"]
subjects: ["Health: substance use disorder treatment", "Insurance: health insurers", "Mental health: other"]
status: "enacted"
primary_sponsors: ["Sarah Anthony"]
version_count: 8
action_count: 24
vote_count: 2
first_action: "2023-01-18"
last_action: "2024-05-22"
source: "openstates"
source_identifier: "ocd-bill/a3e1a09d-0aee-4d5a-8a40-97d9fcd0334b"
source_url: "https://legislature.mi.gov/Bills/Bill?ObjectName=2023-SB-0027"
source_hash: "56627af3ceb6c11c6dffb04af0315783c61c3166bd618b7cfe85a0ba15a78f03"
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-mi"]
---

# Michigan SB 27 (2023-2024) — Insurance: health insurers; equitable coverage for behavioral health and substance use disorder treatment; provide for. Amends 1956 PA 218 (MCL 500.100 - 500.8302) by adding sec. 3406hh.

## Version chain

The bill's text revisions, in order — the diff chain from filing to enrollment.

1. **As Passed by the House** (committee substitute) — [source](https://legislature.mi.gov/documents/2023-2024/billengrossed/Senate/pdf/2023-SEBH-0027.pdf)
2. **As Passed by the Senate** (committee substitute) — [source](https://legislature.mi.gov/documents/2023-2024/billengrossed/Senate/pdf/2023-SEBS-0027.pdf)
3. **Public Act** (committee substitute) — [source](https://legislature.mi.gov/documents/2023-2024/publicact/pdf/2024-PA-0041.pdf)
4. **Senate Introduced Bill** (committee substitute) — [source](https://legislature.mi.gov/documents/2023-2024/billintroduced/Senate/pdf/2023-SIB-0027.pdf)
5. **Substitute (S-3)** (committee substitute) — [source](https://legislature.mi.gov/Home/GetObject?objectName=2023-SCVBS-0027-00B74.pdf)
6. **Substitute (S-3) - 2** (committee substitute) — [source](https://legislature.mi.gov/Home/GetObject?objectName=2023-SCVBS-0027-0B735.pdf)
7. **Substitute (S-3) - 3** (committee substitute) — [source](https://legislature.mi.gov/Home/GetObject?objectName=2023-SCVBS-0027-00C76.pdf)
8. **Substitute (S-3) - 4** (committee substitute) — [source](https://legislature.mi.gov/Home/GetObject?objectName=2023-SCVBS-0027-00D47.pdf)

## Votes

- passed; given immediate effect Roll Call # 49 Yeas 93 Nays 12 Excused 0 Not Voting 5 — **93–12** (pass) · lower
- PASSED ROLL CALL # 544 YEAS 35 NAYS 3 EXCUSED 0 NOT VOTING 0 — **35–3** (pass) · upper

## Sponsors

- Sarah Anthony — primary (person)
- Erika Geiss — cosponsor (person)
- Mary Cavanagh — cosponsor (person)
- Paul Wojno — cosponsor (person)
- Sam Singh — cosponsor (person)
- Stephanie Chang — cosponsor (person)

## Timeline

The legislative action history — every referral, reading, and vote.

- **2023-01-18** INTRODUCED BY SENATOR SARAH ANTHONY `introduction`
- **2023-01-18** REFERRED TO COMMITTEE ON HEALTH POLICY `referral-committee`
- **2023-10-12** REPORTED FAVORABLY WITH SUBSTITUTE (S-3) `committee-passage`
- **2023-10-12** REFERRED TO COMMITTEE OF THE WHOLE WITH SUBSTITUTE (S-3) `referral-committee`
- **2023-10-17** REPORTED BY COMMITTEE OF THE WHOLE FAVORABLY WITH SUBSTITUTE (S-3) `committee-passage`
- **2023-10-17** SUBSTITUTE (S-3) CONCURRED IN
- **2023-10-17** PLACED ON ORDER OF THIRD READING WITH SUBSTITUTE (S-3)
- **2023-10-18** PASSED ROLL CALL # 544 YEAS 35 NAYS 3 EXCUSED 0 NOT VOTING 0 `passage`
- **2023-10-18** received on 10/18/2023 `introduction`
- **2023-10-18** read a first time `reading-1`
- **2023-10-18** referred to Committee on Insurance and Financial Services `referral-committee`
- **2024-04-25** reported with recommendation without amendment `committee-passage`
- **2024-04-25** referred to second reading
- **2024-04-30** read a second time `reading-2`
- **2024-05-01** read a third time `reading-3`
- **2024-04-30** placed on third reading
- **2024-05-01** passed; given immediate effect Roll Call # 49 Yeas 93 Nays 12 Excused 0 Not Voting 5 `passage`
- **2024-05-01** returned to Senate
- **2024-05-02** FULL TITLE AGREED TO
- **2024-05-02** ORDERED ENROLLED
- **2024-05-14** PRESENTED TO GOVERNOR 05/09/2024 09:25 AM `executive-receipt`
- **2024-05-22** APPROVED BY GOVERNOR 05/21/2024 11:12 AM `executive-signature`
- **2024-05-22** FILED WITH SECRETARY OF STATE 05/21/2024 01:10 PM
- **2024-05-22** ASSIGNED PA 0041'24

## Source

OpenStates / OpenCivicData bulk snapshot [2026-07-01](https://data.openstates.org/daily/2026-07-01/public.pgdump); origin `ocd-bill/a3e1a09d-0aee-4d5a-8a40-97d9fcd0334b`. Confidence: reported (aggregated from official Michigan legislature records).