When parents separate, someone has to cover the child’s medical bills. Health insurance premiums, copays, deductibles, dental visits, prescription drugs — these costs don’t stop because the family split up. Child support handles the monthly cash transfer. Medical support handles everything else.
- Federal law requires every child support order to include a medical support provision — it is not optional.
- Medical support can take three forms: private health insurance, public coverage (Medicaid/CHIP), or cash medical support.
- Either parent can be ordered to carry coverage — courts choose whichever parent has accessible, affordable insurance.
- Uninsured expenses (copays, deductibles, out-of-network bills) are split between parents, usually in proportion to income.
- In many states, if the obligor stops maintaining ordered coverage, courts may hold the obligor responsible for medical costs the insurance would have covered.
Federal law requires every child support order to include a medical support provision. That’s not optional. It’s not something a judge adds when they feel like it. Under 42 U.S.C. §666(a)(19), all child support orders enforced by IV-D agencies must address how the child’s health care will be covered. The only question is how — and that’s where things vary by state.
This article explains how courts decide who provides coverage, what happens when neither parent has affordable insurance, and how out-of-pocket medical expenses get split once the bills come in.
Federal Law Requires Medical Support in Every Child Support Order
Medical support isn’t a separate legal proceeding from child support. It’s built into every order, and the federal government mandates it through Title IV-D of the Social Security Act.
The 45 C.F.R. §302.56 guideline requirement means every state’s child support formula must account for the child’s health care needs — not just the base cash payment. Medical support and the monthly support amount are two separate line items. When a parent pays $800 a month in child support, that does not cover copays, deductibles, or uninsured bills. Those come on top, unless the order says otherwise.
There are three forms medical support can take under 45 C.F.R. §303.31. The requirement that support orders include medical coverage comes from federal law and applies nationwide. The details of how courts apply that rule are defined by state statutes.
Private health insurance from an employer or the ACA Marketplace. Public coverage through Medicaid or the Children’s Health Insurance Program (CHIP). Or cash medical support — a dollar amount paid toward premiums or uninsured costs when no insurance is available.
In practice, many courts approach the issue this way: private employer-sponsored insurance comes first. If that’s not available at reasonable cost, public programs or cash medical support fill the gap.
The Three Forms Medical Support Can Take
Private health insurance is the default and preferred option. If either parent has access to employer-sponsored group coverage that includes the child at a cost the court considers reasonable, the order will typically require that parent to maintain it. Health insurance purchased through the Affordable Care Act Marketplace can also satisfy a medical support order if the coverage is accessible to the child and meets the state’s reasonable-cost standard.
Medicaid and CHIP serve as the fallback. If no accessible private insurance exists at reasonable cost, courts will direct parents to enroll the child in Medicaid or CHIP, depending on eligibility. The interaction between Medicaid enrollment and child support collection rules gets detailed — that’s covered separately in our guide on how child support affects government benefits. For this article, the key point is that public coverage satisfies the medical support requirement when private insurance isn’t a realistic option.
Cash medical support is what the court orders when neither private insurance nor public coverage is available or accessible. It’s a defined dollar amount — ordered as additional child support — paid toward premiums the other parent is carrying, or toward uninsured medical costs the child incurs. Under 45 C.F.R. §303.31(b)(2), the IV-D agency must petition for cash medical support in every new or modified order where private insurance isn’t available — until such time as it becomes available. The obligation doesn’t disappear because neither parent currently has a group plan.
A lot of people assume that if neither parent has health insurance, the medical support requirement just goes away. It doesn’t. That surprises a lot of parents. The court converts the obligation to cash medical support and orders payment until coverage becomes available.
What Is “Reasonable Cost” for Health Insurance?
Courts don’t order a parent to provide insurance at any price. The “reasonable cost” standard limits what can be required — but the definition varies by state.
Federal regulations under 45 C.F.R. §303.31(a)(3) set a default: coverage is considered reasonable if the cost to the responsible parent does not exceed approximately 5% of gross income. That’s the federal floor. States are permitted to adopt their own income-based numeric standard — higher or lower — and many do. The 5% figure is not a hard federal cap. It’s the default that applies when a state hasn’t defined its own threshold.
Texas is a clear example of a state with a higher standard. Under Texas Family Code §154.181(e), reasonable cost means health insurance that does not exceed 9% of the obligor’s annual resources for one child. If the obligor is covering multiple children under the same medical support order, the total premium for all children must not exceed 9%. That gives Texas obligors more room before a court can force them to maintain coverage.
Florida takes a different approach. Under Florida Statutes §61.13(1)(b), employment-related group health insurance is presumptively considered reasonable in cost. The court can rebut that presumption based on deviation factors, but the default leans toward ordering group coverage when it exists.
Say a father in Texas earns $50,000 a year in net resources. The 9% cap means his medical support obligation for insurance premiums can’t exceed $4,500 per year — $375 a month. If his employer’s family plan costs $600 a month above the employee-only rate, that exceeds the cap. The court may order cash medical support instead, or look to the other parent’s coverage options first.
Which Parent Has to Provide the Health Insurance?
This is where the misconception runs deep: it’s not automatically the noncustodial parent. Federal law under 42 U.S.C. §666(a)(19) explicitly authorizes courts to require either or both parents to provide medical support.
The practical question courts ask is: who has accessible, affordable coverage available? Employment-based group insurance gets priority. If one parent has it through work at reasonable cost and the other doesn’t, the parent with coverage usually gets ordered to maintain it — regardless of who has physical custody.
If both parents have accessible group coverage, courts compare plans on cost, comprehensiveness, and network accessibility, then pick the better option. In Washington state under RCW 26.09.105, if both parents have available insurance, the court has discretion to order the parent with better coverage to provide it, with the other parent contributing a proportionate share of the premium.
Take a situation where one parent works for a company offering family coverage while the other is self-employed with no group plan. Courts generally order the employed parent to carry the insurance — regardless of custody arrangement — with the self-employed parent reimbursing a share of the premium through the support order. The coverage question follows the insurance, not the parenting schedule.
The key accessibility rule: insurance has to be usable where the child lives. A plan based out of the obligor’s state that has no in-network providers near the child’s home doesn’t satisfy the requirement. Florida Statutes §61.13(1)(b) addresses this directly — where parents share equal time, coverage must be available in either county where the child resides, or in another county if both parents agree.
If the custodial parent ends up ordered to carry the insurance — because they have better or cheaper coverage — the court doesn’t just let the obligor off the hook. The obligor gets ordered to reimburse a proportional share of the premium, added to the base support obligation. Under New York Family Court Act §413, when the custodial parent is ordered to provide coverage, the noncustodial parent’s pro rata share of the premium cost is calculated based on each parent’s income proportion and added to the basic support obligation.
What Is Cash Medical Support?
Cash medical support is an amount ordered in addition to base child support, directed specifically at health care costs. It’s not the same as the base monthly child support payment.
It shows up in two situations. First: when the obligor is ordered to reimburse the obligee for a proportionate share of insurance premiums the obligee is paying to cover the child. Second: when no insurance exists, and the court orders a fixed monthly payment toward anticipated medical costs.
New York’s formula illustrates the first situation well. Under New York FCA §413, insurance costs are prorated between parents in the same proportion as each parent’s income to their combined income. If the obligor earns 60% of the combined income and the obligee carries the insurance, the obligor pays 60% of the premium cost as cash medical support on top of base support.
When children are covered by Medicaid or CHIP and no private insurance is available, New York FCA §413 caps the noncustodial parent’s cash medical support obligation at 5% of gross income, or the difference between the parent’s income and the self-support reserve, whichever is less.
Washington state defines cash medical support as two combined elements under RCW 26.09.105: the obligated parent’s proportionate share of the premium (capped at 25% of the basic support obligation), plus a proportionate share of uninsured medical expenses. Washington treats these as a package, not separate line items.
Ohio went furthest in standardizing this. Following H.B. 366, every Ohio child support order must include a cash medical support amount for ordinary medical expenses — copays, deductibles, and uninsured costs. Ohio sets a per-child annual amount (currently $388.70 per child) that the obligor pays through the Ohio Department of Job and Family Services. Expenses beyond that threshold become “extraordinary” medical expenses, split by income percentage. That’s a meaningful outlier — most states don’t include a fixed mandatory cash medical support amount in every order regardless of insurance status.
How Are Uninsured Medical Expenses Split Between Parents?
Insurance solves most of the problem — but not all of it. Even when a child has good health insurance, bills happen. Copays, deductibles, out-of-network charges, dental work, orthodontia, mental health visits, prescription costs not covered by the plan — all of these are uninsured or unreimbursed medical expenses. The order has to address who pays for them.
The standard approach is income-proportional splitting. Under Washington RCW 26.19.080, health care costs — defined broadly to include medical, dental, orthodontia, vision, chiropractic, mental health treatment, and prescriptions — are shared between parents in the same proportion as the basic child support obligation. If the obligor’s share of the combined income is 65%, the obligor pays 65% of uninsured medical expenses.
New York FCA §413 follows the same proportional logic. Each parent’s share of reasonable health care expenses not reimbursed by insurance or public programs is prorated in the same proportion as each parent’s income to the combined parental income. The noncustodial parent’s unpaid share constitutes support arrears — treated the same as missed monthly payments.
Florida takes a hybrid approach under Florida Statutes §61.30(8). Health insurance costs and all noncovered medical, dental, and prescription medication expenses are added to the basic child support obligation — unless the court orders them paid separately on a percentage basis. Courts often use the same income percentage breakdown for uninsured expenses.
Texas defaults to a 50/50 split on uninsured expenses in practice, though courts can order a different allocation based on the parents’ financial circumstances. Texas Family Code §154.182 gives courts authority to allocate these costs between parties according to their circumstances.
Illinois lays out the process clearly in 750 ILCS 5/505.2: the court can order the obligor to cover deductibles, copayments, and any other health expenses beyond what insurance covers, in addition to the premium obligation. Uninsured expenses are treated as an additional child support obligation.
Here’s the practical reality on documentation: the parent who pays the medical provider keeps the bill, the Explanation of Benefits from the insurer, and proof of payment. They send copies to the other parent with a written reimbursement request — typically within 30 days of receiving the bill. The other parent then has a defined period (usually 30 days from receipt) to pay their share. If they don’t, the paying parent can file to enforce the order.
How the National Medical Support Notice Works
When the court orders the obligor to provide employer-sponsored coverage, the enforcement mechanism kicks in automatically through the National Medical Support Notice (NMSN). This is the federal standardized tool used by IV-D agencies to force employer compliance.
Under the Final Rule implementing CSPIA §401(b) (45 C.F.R. §303.32, effective January 26, 2001), the process works like this: the IV-D agency sends the NMSN to the obligor’s employer. Within 20 business days, the employer must transfer the notice to the appropriate health plan administrator. The plan administrator must then enroll the child — regardless of open enrollment restrictions. The employer withholds the premium from the obligor’s paycheck and forwards it through the Income Withholding Order.
The employer doesn’t get to wait for the next open enrollment period. The child gets enrolled immediately. ERISA §609(a) at 29 U.S.C. §1169 requires group health plans covered by ERISA to comply with a Qualified Medical Child Support Order (QMCSO) — the legal structure that makes employer plan enrollment mandatory.
Under 750 ILCS 5/505.2(g), Illinois makes the employer’s obligations explicit: the employer must allow the obligor to add the child to coverage without regard to enrollment season restrictions; if the obligor fails to apply, the employer must enroll the child upon application from the obligee or the Illinois Department of Healthcare and Family Services; and the employer cannot remove the child from coverage without meeting specific conditions.
The payment flow for insurance premiums mirrors cash child support: the employer withholds the premium from the obligor’s paycheck, it moves through the State Disbursement Unit (SDU), and the Consumer Credit Protection Act withholding limits that apply to IWOs for child support also apply to the combined total of support plus premium withholding. That doesn’t mean parents simply write checks to each other — the SDU sits in the middle by default in virtually every IV-D case.
What Happens If the Obligor Stops Providing Coverage?
Failure to maintain ordered health insurance isn’t a civil matter between the parents. It’s a violation of a court order — with consequences.
Under 750 ILCS 5/505.2(d), if the obligor fails to maintain coverage as ordered, the obligor is liable for every medical expense the child incurs that the insurance would have covered. Not a proportional share. All of it. The obligee can also petition to modify the order based solely on the failure to maintain coverage — no other grounds required.
The enforcement tools are the same ones used for unpaid cash support: civil contempt findings, fines, driver’s license suspension, professional license suspension, and in serious cases, jail time. Courts also allow the IV-D agency to serve the NMSN directly on any new employer if the obligor changes jobs.
Take a situation where the obligor gets laid off and coverage lapses. If the order required the obligor to maintain insurance and the child incurs an ER bill during the gap, the obligor is liable for those costs under the medical support order — even though the job loss wasn’t intentional. Courts often address changes in insurance availability through the modification process. Waiting while costs accumulate creates a debt the court can’t erase retroactively.
That last point matters. Unpaid medical support obligations that are reduced to a specific dollar amount become arrears — and child support arrears carry the same permanence as any other unpaid child support under the Bradley Amendment. Courts cannot retroactively reduce what’s already owed.
How State Laws Vary: A Comparison Across Five States
Medical support works differently depending on where the order is entered. Here’s how five states handle the key variables.
| State | Reasonable Cost Standard | Uninsured Expense Split |
|---|---|---|
| Texas | Reasonable Cost Standard9% of obligor’s annual resources for one child (state-defined threshold above the federal default) | Uninsured Expense Split50/50 default; court may order different allocation based on circumstances |
| Florida | Reasonable Cost StandardEmployment-related group coverage presumed reasonable; court may rebut using deviation factors | Uninsured Expense SplitAdded to basic obligation or split by income percentage per §61.30(8) |
| New York | Reasonable Cost StandardPrivate insurance prorated by income; cash medical support capped at 5% of gross income when child is on public coverage | Uninsured Expense SplitProrated by income proportion; unpaid share becomes arrears |
| Illinois | Reasonable Cost StandardCourt weighs cost to both parents and child’s medical needs; no fixed income percentage in statute | Uninsured Expense SplitTreated as additional child support obligation; obligor liable for all costs if coverage lapses |
| Washington | Reasonable Cost StandardMonthly premium contribution capped at 25% of obligated parent’s basic support obligation | Uninsured Expense SplitShared in same proportion as basic support obligation per RCW 26.19.080 |
Here’s where the state difference matters most in practice: take two parents with the same income in Texas and Washington. In Texas, the reasonable cost ceiling is tied to 9% of the obligor’s annual resources — a flat income-based cap with no reference to the support amount itself. In Washington, the premium contribution cap is 25% of the basic support obligation, which moves up or down with the support amount. The same obligor earning the same income could face a higher or lower premium obligation depending solely on which state entered the order.
Frequently Asked Questions
Does child support include health insurance?
Not automatically — but every child support order must include a medical support provision by federal law. The base monthly child support payment and medical support are two separate obligations. 42 U.S.C. §666(a)(19) requires all IV-D-enforced orders to address the child’s health care coverage. The monthly support check does not cover copays or deductibles unless the order specifically says otherwise.
Who pays for the child’s health insurance after separation?
Whichever parent has accessible, affordable coverage — not automatically the noncustodial parent. Courts prioritize employer-sponsored group insurance and order the parent with the better available plan to maintain coverage. If that’s the custodial parent, the obligor typically reimburses a proportionate share of the premium. Washington RCW 26.09.105 gives courts explicit discretion to order either parent to provide coverage based on plan quality and cost.
What happens if neither parent has health insurance for the child?
The medical support obligation doesn’t go away. Under 45 C.F.R. §303.31, the IV-D agency must petition for cash medical support in new or modified orders when no private insurance is available. Courts may also direct parents to enroll the child in Medicaid or CHIP. The obligation converts — it doesn’t disappear.
Can the custodial parent be ordered to provide health insurance?
Yes. Courts order whichever parent has the better available coverage, regardless of custody arrangement. If the custodial parent’s employer plan is cheaper, more comprehensive, or more accessible to the child, that parent may be ordered to carry it — with the noncustodial parent ordered to reimburse a proportionate share of the premium through the support order.
What are uninsured medical expenses in a child support order?
Uninsured expenses are the costs remaining after insurance pays — deductibles, copays, out-of-network charges, dental, orthodontia, vision, mental health treatment, and prescriptions not covered by the plan. Most orders require parents to split these costs in proportion to their incomes. Washington RCW 26.19.080 defines health care costs broadly to include all of these categories.
What happens if the parent ordered to provide insurance stops maintaining it?
They become liable for every medical expense the child incurs that the insurance would have covered — not a proportionate share, the full amount. Under 750 ILCS 5/505.2(d), the obligee can also petition to modify the order based solely on that failure. Civil contempt, license suspension, and other enforcement tools available for missed cash support apply equally to medical support violations.
Can child support be modified if health insurance premiums go up significantly?
A substantial change in insurance costs — a large premium increase, a plan cancellation, or a new job that changes coverage options — can be grounds to petition for modification of the medical support provision. Courts review whether the current order still reflects a reasonable cost arrangement. The modification process is the same as for modifying the base child support amount — the change must be substantial and material.
What is cash medical support and how is it different from child support?
Cash medical support is a separate dollar amount ordered specifically toward health care costs — either as reimbursement for insurance premiums the other parent is paying, or as a fixed amount for uninsured medical expenses when no insurance is available. It’s calculated separately from the base monthly support obligation and is typically paid through the same SDU payment system. Unpaid cash medical support that’s been reduced to a specific amount becomes arrears and is treated identically to unpaid base support.
