---
type: "Bill"
title: "Human services: medical services; definition of complex rehabilitation technology; provide for. Amends 1939 PA 280 (MCL 400.1 - 400.119b) by adding sec. 108a."
description: "Human services: medical services; definition of complex rehabilitation technology; provide for. Amends 1939 PA 280 (MCL 400.1 - 400.119b) by adding sec. 108a."
jurisdiction: "us/states/mi"
legislature: "Michigan Legislature"
session: "2023-2024"
identifier: "SB 450"
citation: "Michigan SB 450 (2023-2024)"
classification: ["bill"]
subjects: ["Human services: medical services", "State agencies (existing): health and human services"]
status: "enacted"
primary_sponsors: ["Jeff Irwin"]
version_count: 5
action_count: 32
vote_count: 2
first_action: "2023-06-28"
last_action: "2024-07-30"
source: "openstates"
source_identifier: "ocd-bill/b2c21be6-a106-4987-b25c-842afd3f0f2d"
source_url: "https://legislature.mi.gov/Bills/Bill?ObjectName=2023-SB-0450"
source_hash: "ea01d6495a6db40254ba013c8d571e2012eedd846df99013ecff24c811dacab3"
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 450 (2023-2024) — Human services: medical services; definition of complex rehabilitation technology; provide for. Amends 1939 PA 280 (MCL 400.1 - 400.119b) by adding sec. 108a.

## 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-0450.pdf)
2. **As Passed by the Senate** (committee substitute) — [source](https://legislature.mi.gov/documents/2023-2024/billengrossed/Senate/pdf/2023-SEBS-0450.pdf)
3. **Public Act** (committee substitute) — [source](https://legislature.mi.gov/documents/2023-2024/publicact/pdf/2024-PA-0104.pdf)
4. **Senate Concurred Bill** (committee substitute) — [source](https://legislature.mi.gov/documents/2023-2024/billconcurred/Senate/pdf/2023-SCB-0450.pdf)
5. **Senate Introduced Bill** (committee substitute) — [source](https://legislature.mi.gov/documents/2023-2024/billintroduced/Senate/pdf/2023-SIB-0450.pdf)

## Votes

- ROLL CALL: ROLL CALL # 326 YEAS 38 NAYS 0 EXCUSED 0 NOT VOTING 0 — **38–0** (pass) · upper
- PASSED ROLL CALL # 591 YEAS 38 NAYS 0 EXCUSED 0 NOT VOTING 0 — **38–0** (pass) · upper

## Sponsors

- Jeff Irwin — primary (person)
- Kevin Daley — cosponsor (person)

## Timeline

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

- **2023-06-28** INTRODUCED BY SENATOR JEFF IRWIN `introduction`
- **2023-06-28** REFERRED TO COMMITTEE ON HEALTH POLICY `referral-committee`
- **2023-10-19** REPORTED FAVORABLY WITHOUT AMENDMENT `committee-passage`
- **2023-10-19** REFERRED TO COMMITTEE OF THE WHOLE `referral-committee`
- **2023-10-24** REPORTED BY COMMITTEE OF THE WHOLE FAVORABLY WITHOUT AMENDMENT(S) `committee-passage`
- **2023-10-24** PLACED ON ORDER OF THIRD READING
- **2023-10-25** PASSED ROLL CALL # 591 YEAS 38 NAYS 0 EXCUSED 0 NOT VOTING 0 `passage`
- **2023-10-25** received on 10/25/2023 `introduction`
- **2023-10-25** read a first time `reading-1`
- **2023-10-25** referred to Committee on Health Policy `referral-committee`
- **2024-04-25** reported with recommendation with substitute (H-1) `committee-passage`
- **2024-04-25** referred to second reading
- **2024-06-25** read a second time `reading-2`
- **2024-06-25** substitute (H-1) adopted
- **2024-06-25** placed on third reading
- **2024-06-25** placed on immediate passage
- **2024-06-25** read a third time `reading-3`
- **2024-06-25** passed; given immediate effect Roll Call # 214 Yeas 104 Nays 6 Excused 0 Not Voting 0 `passage`
- **2024-06-25** inserted full title
- **2024-06-25** returned to Senate
- **2024-06-26** PASSED BY HOUSE WITH SUBSTITUTE (H-1) WITH IMMEDIATE EFFECT `passage`
- **2024-06-26** LAID OVER ONE DAY UNDER THE RULES
- **2024-06-26** RULES SUSPENDED FOR IMMEDIATE CONSIDERATION
- **2024-06-26** HOUSE SUBSTITUTE (H-1) CONCURRED IN
- **2024-06-26** ROLL CALL: ROLL CALL # 326 YEAS 38 NAYS 0 EXCUSED 0 NOT VOTING 0
- **2024-06-26** GIVEN IMMEDIATE EFFECT
- **2024-06-26** FULL TITLE AGREED TO
- **2024-06-26** ORDERED ENROLLED
- **2024-07-30** PRESENTED TO GOVERNOR 07/15/2024 02:48 PM `executive-receipt`
- **2024-07-30** APPROVED BY GOVERNOR 07/23/2024 10:16 AM `executive-signature`
- **2024-07-30** FILED WITH SECRETARY OF STATE 07/23/2024 12:16 PM
- **2024-07-30** ASSIGNED PA 0104'24 WITH IMMEDIATE EFFECT

## Source

OpenStates / OpenCivicData bulk snapshot [2026-07-01](https://data.openstates.org/daily/2026-07-01/public.pgdump); origin `ocd-bill/b2c21be6-a106-4987-b25c-842afd3f0f2d`. Confidence: reported (aggregated from official Michigan legislature records).