Michigan HB 4839 passes both chambers, heads to governor for signature

Michigan HB 4839 has passed both chambers of the state legislature and is now heading to the governor, according to the most recent action recorded on May 19, 2026. The bill would add a new section to the state's 1939 Public Act 280 requiring that generic medications be prescribed under the state's medical services program. (source: https://openstates.org/mi/bills/2025-2026/HB4839/)

The bill was sponsored by Rep. Sarah Lightner. It passed the House on May 13, 2026, by a roll call vote of 63 yeas to 43 nays, with 4 members not voting. A substitute version, H-1, was adopted on May 12 before the bill advanced to third reading. After being transmitted to the Senate, it was referred to the Committee on Appropriations and then passed by the House with immediate effect on May 19.

The bill now goes to the governor, whose signature would enact it into law.