Illinois bill would mandate infant allergy coverage, with unclear cost impact

(The Center Square) – An Illinois proposal to require insurance coverage for infant allergy prevention is raising questions about potential costs, even as supporters argue it could reduce long-term health spending.

State Sen. Darby Hills is backing Illinois Senate Bill 4182, which would require most insurance plans to cover a six-month supply of egg and peanut allergen supplements for infants when prescribed by a health care provider.

Hills said the measure is designed to eliminate upfront costs for families and encourage early intervention, which some studies suggest can lower the risk of developing lifelong food allergies.

"Families should not have to choose between prevention and cost," Hills said.

But the proposal comes without a clear estimate of how much the new mandate would cost insurers, or how those costs might ultimately affect premiums for consumers.

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Hills framed the bill as a potential long-term cost saver, arguing that preventing allergies early could reduce the need for expensive treatments later in life, such as ongoing specialist care, allergy shots and emergency interventions.

"It seems like a short period of time to address something that could otherwise require years of treatment," she said.

The overall fiscal impact of the proposal remains unclear, but insurers would likely pay the market price for the supplements, estimated at roughly $200 to $400 depending on the brand.

Insurance groups typically negotiate discounted rates with manufacturers, and total costs would ultimately depend on those negotiated prices multiplied by the number of eligible infants covered under each plan.

The legislation would apply to most individual and group plans in Illinois, including those covering government employees. Some high-deductible plans may be exempt or face limitations due to federal rules, but the bill is intended to reach majority of policyholders.

Hills said the proposal was prompted by a constituent whose child suffers from severe food allergies, highlighting both the medical and financial strain such conditions can create over time.

"This bill came to me from a constituent whose child suffers from food allergies, and she wanted to help other families going forward," said Hills. "She felt that, although it was too late for her own child, she could help prevent this for other children."

Food allergies affect roughly one in 10 children in the United States, and research cited by the bill's supporters suggests early exposure to allergens like peanuts and eggs can reduce the likelihood of developing those allergies.

Even so, the legislation's current focus is narrow — limited to egg and peanut supplements — and Hills indicated it could be expanded later.

"We'd need to do more research on early exposure to other allergens, but it's something worth exploring."