2025 House Bill 4839

Human services: medical services; requirement to prescribe generic medications; provide for.

A bill to amend 1939 PA 280, entitled “The social welfare act,” (MCL 400.1 to 400.119b) by adding section 109z.

AI Analysis – Experimental

House Bill No. 4839 restricts Medicaid coverage of brand name drugs in Michigan when a generic equivalent exists, unless the prescriber specifically indicates the need for the brand name drug, aiming to reduce costs and promote generic drug use.

Introduced in the House

Sept. 4, 2025

Introduced by Rep. Sarah Lightner (R-45)

Referred to the Committee on Appropriations

April 29, 2026

Reported with substitute H-1

May 12, 2026

Substitute H-1 concurred in by voice vote

Amendment offered by Rep. Matt Longjohn (D-40)

1. Amend page 2, line 1, after “apply” by inserting a comma and “or the brand name drug product or

biological drug product is one found by the United States Food and Drug Administration to have a

narrow therapeutic range”.

The amendment failed by voice vote

May 13, 2026

Passed in the House 63 to 43 (details)

Motion to give immediate effect by Rep. Bryan Posthumus (R-90)

The motion prevailed by voice vote

Received in the Senate

May 19, 2026

Referred to the Committee on Appropriations