Unreimbursed medical expenses in child support are the out-of-pocket healthcare costs for your child that remain after insurance pays its share, and your court order sets both the percentage each parent owes and the steps you have to follow to collect. Co-pays, prescriptions, dental and vision care, orthodontia, mental health visits, and physical therapy all typically qualify. Miss a notification window or a reimbursement deadline, though, and you can lose the right to recover from the other parent even when the expense was legitimate.
What Counts as an Unreimbursed Medical Expense
An unreimbursed medical expense is any out-of-pocket cost for a child’s healthcare that insurance did not cover. The expense has to be reasonable and necessary, meaning a healthcare professional determined the child needed the service or product. These costs sit outside the base monthly child support amount and get divided separately under the rules in your order.
Common examples:
- Co-pays and deductibles
- Prescription medications
- Dental care, including cleanings, fillings, and extractions
- Vision care, including eye exams, glasses, and contact lenses
- Orthodontia such as braces and retainers
- Mental health services, including counseling, therapy, and psychiatric visits
- Physical therapy and treatment for chronic conditions
Cosmetic and purely elective procedures that a doctor has not deemed medically necessary fall outside this category. If you aren’t sure whether something qualifies, get the treating provider to document the medical necessity in writing before you incur the cost.
Routine vs. Extraordinary Costs
Many court orders separate small, predictable costs from larger ones. Routine expenses like annual checkup co-pays are often considered built into the base child support calculation, which means you may not be able to seek reimbursement for them at all. Extraordinary expenses are costs above a set annual threshold per child; several jurisdictions use $250 per child per year, though the exact figure depends on local guidelines. Once costs cross the threshold, both parents split the excess under the formula in the order. Read your order to see whether it draws this line or treats every unreimbursed cost the same way.
How the Costs Get Split
Your court order controls the split. The most common formula is proportional to income: each parent pays the same percentage of medical costs as their share of combined parental income. If one parent earns $60,000 and the other earns $40,000, the higher earner owes 60% of each bill and the other owes 40%. Some orders use a flat 50/50 division, and a smaller number assign the full cost to one parent.
If your order doesn’t say anything about medical cost allocation, you likely cannot force the other parent to contribute until you go back to court and get the order modified to include one.
Notify the Other Parent Before Treatment
This is where most reimbursement disputes start. Many orders require the parent taking the child for care to notify the other parent within a set window, and some go further by requiring advance consent for non-emergency or extraordinary treatment such as orthodontia or elective surgery. Skipping the notification step can weaken or eliminate your reimbursement right even when the expense was reasonable.
Out-of-network provider choices are a frequent flashpoint. When an order directs that the child use in-network providers under the existing plan, a parent who picks an out-of-network provider without the other parent’s agreement generally eats the extra cost. The gap between what insurance would have paid in-network and the higher out-of-network bill falls on the parent who made that choice, unless there was a compelling medical reason only that provider could meet.
Before you schedule anything beyond a standard checkup or urgent care visit, check your order for notification and consent language. Then send a written notice to the other parent describing the recommended treatment, the estimated cost, and whether the provider is in-network. Email or text works and leaves a paper trail.
Documentation You’ll Need to Get Paid Back
A reimbursement request needs three documents to hold up:
- The original bill or invoice from the provider, showing what the child received and what it cost
- The Explanation of Benefits (EOB) from the insurer, showing what insurance paid, what it denied, and the balance you owe
- Proof you actually paid, such as a receipt, bank statement, or credit card record
The EOB is the critical piece because it proves the expense went through insurance first. Missing any of the three gives the other parent an easy reason to refuse and puts you in a weaker position if you have to ask a court to enforce. Keep digital copies as you go instead of reconstructing records months later.
Submitting the Request and Watching the Deadline
Your court order says how long you have to submit a reimbursement request after paying a bill or receiving the EOB. Some orders allow as little as 30 days; others allow up to 90. These deadlines are not flexible. Missing one can forfeit your right to recover that expense entirely.
Once the other parent receives a properly documented request, they typically have 30 days to pay their share. If your order doesn’t specify a payment deadline, courts generally default to 30 days. Some orders allow the obligated parent to pay the provider directly instead of reimbursing you.
Send the request by a method that proves delivery: certified mail, email with a read receipt, or through a co-parenting app’s expense-tracking feature. State clearly what you paid, what percentage the other parent owes under the order, the resulting dollar amount, and the payment deadline. A specific, organized request is much harder to brush off.
Enforcement if the Other Parent Refuses
When a properly documented request goes unpaid, you can go back to the court that issued the support order and file a motion for contempt. That motion asks the judge to find the other parent in violation and compel payment.
Courts have broad authority here. Penalties for non-compliance can include wage garnishment, liens on property, and suspension of a driver’s, professional, or recreational license. Cases handled through a state child support enforcement agency, known as IV-D cases, can tap additional federal remedies, including interception of federal tax refunds once past-due support reaches $500, denial of passport issuance or renewal when the debt exceeds $5,000, and referral for federal criminal prosecution when obligations go unpaid for more than a year or exceed $5,000.1The Administration for Children and Families. Essentials for Attorneys in Child Enforcement – Chapter Ten
Filing fees for enforcement motions vary by jurisdiction from nothing to several hundred dollars, and some courts waive fees for parents who show financial hardship. If the judge finds the other parent acted unreasonably, the court can order that parent to pay your attorney’s fees and court costs.
How Insurance Coverage Fits In
Federal law requires every child support order to include a medical support provision, usually by designating one or both parents to maintain health insurance for the child. State child support agencies enforce this through a National Medical Support Notice sent to the obligated parent’s employer, which triggers enrollment through the employer’s health plan.2Office of the Law Revision Counsel. 42 USC 666 – Requirement of Statutorily Prescribed Procedures3The Administration for Children and Families. National Medical Support Notice Forms and Instructions Enforcement is tied to whether coverage is available at “reasonable cost” to the obligated parent, which generally turns on affordability relative to that parent’s income.4Office of the Law Revision Counsel. 42 USC 652 – Duties of Secretary If neither parent has access to affordable employer coverage, the order may require marketplace coverage or a cash contribution toward medical costs instead.
Tax Deduction for Medical Costs You Pay
Both divorced parents can potentially deduct unreimbursed medical expenses they pay for a child, regardless of which parent claims the child as a dependent that year. IRS rules let each parent include the medical expenses they personally paid when calculating their itemized medical deduction, as long as the child was in the custody of one or both parents for more than half the year and the parents are divorced, legally separated, or lived apart for the last six months of the year.5Internal Revenue Service. Publication 502 (2025), Medical and Dental Expenses
So if you pay 60% of a $2,000 orthodontia bill, you can include your $1,200 share on your return and the other parent can include their $800 share. The deduction only produces a tax benefit if your total medical costs exceed 7.5% of your adjusted gross income and you itemize, so for most parents these amounts alone won’t cross the line. The rule still matters in a year when you have other significant medical costs.
When It’s Time to Modify the Order
Medical situations change. A new diagnosis, a chronic condition that will generate ongoing expensive treatment, or a significant change in either parent’s income or insurance can justify going back to court to modify the support order. Courts treat a substantial change in medical needs as a material change in circumstances, the legal standard for reopening a support order. If large costs are going to keep coming, updating the order is far more efficient than filing a reimbursement request every month and chasing enforcement when payments don’t arrive.