HB 4864 Michigan House · 2025-2026 Regular Session

Health: children; definition of elevated blood lead level; modify. Amends sec. 5456 of 1978 PA 368 (MCL 333.5456).

HB 4864 updates Michigan's definition of "elevated blood lead level" (EBL) for children under 6 years old. It lowers the threshold from 20 micrograms per deciliter (ug/dL) to 10 ug/dL for case management purposes, aligning with current CDC guidelines. This change directly affects young children in Michigan who undergo blood lead testing, ensuring earlier identification of lead exposure. The bill modifies the Public Health Code's existing definition without creating new programs or funding.

Issues: ✓ Healthcare

Bill status passed 3 of 5 stages cleared

Introduction

Sep 2025

Committee Review

Jun 2026

House Passage

Jun 2026

Senate Passage

Governor

Introduced Sep 11, 2025 Last action Jun 25, 2026

Maddy AI version diff · 2 comparisons

What changed between versions

Substitute (H-1) → Substitute (H-1) - 2 · 3 edits

MINOR

The bill text was replaced with a new version that defines specific terms related to lead hazards and blood lead levels. This change clarifies the legal standards for identifying elevated blood lead levels and describes methods for managing lead hazards in buildings.

Scope change

The scope of the bill remains focused on public health regulations regarding lead, but the specific definitions and thresholds for what constitutes an 'elevated blood lead level' and related terms have been updated.

DEFINITION

Added new definitions for 'Deteriorated paint', 'Discipline', 'Distinct painting history', 'Documented methodology', 'Dust lead hazard', and 'Encapsulant' to clarify regulatory standards.

Modified the definition of 'Elevated blood lead level' (EBL) to specify a threshold of 20 ug/dl for general purposes and 10 ug/dl for children 6 years or younger, replacing previous vague language.

Added a new definition for 'Enclosure' to describe the use of rigid materials as a barrier between lead-based paint and the environment.

Floor votes

How they voted

This bill passed the House by voice vote (no roll call recorded).

Full legislative history

Actions timeline

Total actions

Key actions

Committee

Jun 25, 2026

Committee

referred to second reading

lower

Jun 25, 2026

Lower · Passed

reported with recommendation with substitute (H-1)

lower

Jun 3, 2026

Lower · Passed

recommendation concurred in

lower

Jun 3, 2026

Lower · Passed

reported with recommendation for referral to Committee on Rules with substitute (H-1)

lower

Sep 11, 2025

Committee

referred to Committee on Health Policy

lower

Sep 11, 2025

Introduced

introduced by Representative Rep. Julie Rogers

lower

1 primary · 26 co-sponsors