The law is clear: early intervention services under IDEA Part C must be provided at no cost to families. Yet many parents receive bills, insurance claims, or confusing consent forms that seem to contradict this promise.

The confusion isn't an accident. The funding system is layered. States must provide services, but they're allowed to bill third-party payers first: Medicaid, private insurance, or both. How this works, what you consent to, and what rights you retain aren't secrets. They're just not explained.

Here's how the money flows and what you need to know before signing anything.

IDEA Part C: What "No Cost" Means

Under federal law, early intervention services are provided at no cost to families. That doesn't mean the services are free to the state. It means you don't pay.

States cover the cost through a mix of federal grants, state appropriations, and third-party billing. When a state bills Medicaid or your private insurance, they're recovering costs, not charging you directly. The distinction matters because it shapes what happens when insurance denies a claim.

If you refuse to let the state bill your insurance, services continue. The law doesn't allow states to withhold services because a family declines to use insurance. This is a right, not a courtesy.

How Medicaid and Private Insurance Interact

Most states use Medicaid as the primary payer when a child is enrolled. If Medicaid covers early intervention services, the state bills Medicaid first. Private insurance is billed only if Medicaid doesn't apply or doesn't cover a specific service.

For families with both Medicaid and private insurance, Medicaid typically takes priority. This can work in your favor: Medicaid doesn't impose copays or deductibles for early intervention, while private insurance might.

When states bill private insurance without Medicaid in the picture, things get more complex. Some families discover they've agreed to cost-sharing without understanding what they signed.

The Consent Form You Probably Didn't Read Closely

Before a state can bill your private insurance, they need your written consent. This isn't a procedural formality. It's a real choice with real consequences.

When you consent to insurance billing, you're authorizing the state to:

• Submit claims to your insurer for covered services
• Share your child's medical information with the insurance company
• Potentially subject you to copays, deductibles, or other cost-sharing if your plan requires them

You can refuse. Refusing consent doesn't reduce services. It shifts the funding burden back to the state, which is required to provide services regardless.

Some parents consent because they assume it's required. Others consent because they want to help the state recover costs. Both are valid reasons, but they should be informed ones.

What Happens When Insurance Denies a Claim

If you consented to Medicaid billing and Medicaid denies coverage, the state must still provide services. This is explicit in federal regulations. The denial doesn't create a bill for you. It means the state absorbs the cost.

Private insurance denials work the same way if you've consented. The state can't bill you for a denied claim. They can't reduce services. The financial risk stays with the state, not the family.

This is a protection that exists precisely because states are allowed to bill insurance in the first place. Without it, families would be trapped between signing consent forms and risking surprise bills.

Cost-Sharing: When You Might Pay

If you consent to private insurance billing and your plan includes copays or deductibles, you may be responsible for those costs. This is the main financial risk for families with commercial insurance.

Not all states enforce cost-sharing. Some states have policies that prohibit billing families for copays even when insurance is used. Other states allow it but cap the amounts. A few states bill the full cost-sharing amount allowed under the plan.

New York changed its approach in early 2026, dropping commercial insurance billing entirely. Families with private insurance in New York no longer sign consent forms because the state stopped using commercial plans as a payer. Medicaid billing continues.

Before you consent to insurance billing, ask your service coordinator:

• Does this state charge families for copays or deductibles?
• If my insurance denies the claim, will I receive a bill?
• Can I revoke consent later if I change my mind?

These aren't hypothetical questions. The answers vary by state and they affect your household budget.

Medicaid Is Different

Medicaid operates under different rules. States can use Medicaid to pay for early intervention without charging families copays or deductibles. Federal Medicaid rules prohibit cost-sharing for early intervention services provided to children under age three.

If your child is enrolled in Medicaid, consenting to billing doesn't create financial risk. The state recovers federal matching funds, and you don't see a bill.

This is why some families with both Medicaid and private insurance choose to consent only to Medicaid billing. It gives the state a funding stream without exposing the family to cost-sharing.

You Can Change Your Mind

Consent to insurance billing isn't permanent. You can revoke it at any time, in writing. Once you revoke consent, the state stops billing your insurance and continues providing services using other funding sources.

Revocation doesn't affect services already billed or claims already submitted. It applies going forward.

Some families consent initially, discover their insurance plan has high deductibles, and then revoke consent before accumulating costs. This is a legitimate use of the system. The state can't penalize you for it.

When It Makes Sense to Consent

If your child has Medicaid, consenting to billing is low-risk. The state benefits from federal matching funds, and you don't incur costs.

If you have private insurance with no deductible and low copays, consenting may be reasonable, especially if you want to help the state recover costs. Just confirm that your state doesn't bill families for copays before you sign.

If your plan has a high deductible or you're already meeting it for other medical expenses, declining consent protects you from using your insurance benefits for something the state is required to provide anyway.

When It Makes Sense to Decline

If your private insurance plan has high cost-sharing and you're not already meeting your deductible, declining consent keeps those costs off your plate.

If you're concerned about how insurance billing might affect your annual or lifetime benefit caps, declining consent is a way to preserve those benefits for other medical needs. Some older plans still have caps that apply to certain types of therapy.

If you don't want your child's early intervention records shared with your insurance company, declining consent is the only way to prevent it. This matters for families with privacy concerns or worries about how diagnoses might affect future coverage.

What to Ask Your Service Coordinator

Service coordinators are required to explain your rights, but the quality of those explanations varies. Don't rely on a form handed to you during intake. Ask directly:

• Does this state bill families for copays or deductibles when private insurance is used?
• What happens if my insurance denies a claim?
• Can I consent to Medicaid billing but not private insurance?
• How do I revoke consent if I change my mind?
• Will declining consent affect my child's services in any way?

If the answers aren't clear, ask for written confirmation. State early intervention offices often have written policies on insurance billing that service coordinators can provide.

The 2026 New York Change: What It Means

New York's decision to stop billing commercial insurance eliminated one of the main sources of confusion for families. Parents in New York no longer navigate consent forms, copay questions, or cost-sharing policies related to private insurance.

The change didn't reduce services. It shifted the cost burden to state funding and Medicaid, which is how the system is designed to work under IDEA Part C.

Other states may follow. Billing commercial insurance is optional under federal law. States do it to recover costs, but the administrative burden and family confusion sometimes outweigh the financial benefit.

The Bottom Line

Early intervention is free to you. How states pay for it is their problem to solve, not yours.

If you're asked to consent to insurance billing, you have the right to decline without losing services. If you consent, you can revoke it later. If your insurance denies a claim, you don't get a bill.

The system is confusing by design: multiple payers, overlapping rules, consent forms written in insurance language. But the core right is simple: your child receives services regardless of who pays.

Know what you're signing. Ask what happens if you don't sign. Make sure the answer matches what the law requires.