Who Pays for the Kids' Health Insurance and Medical Bills in a Washington Support Order?

The monthly transfer payment gets all the attention in child support cases. Then a kid needs braces, an emergency room visit, or a $400 monthly premium, and parents discover the other half of the support order. The Law Office of Chad Foster helps Snohomish County clients with divorce and family-law matters.

In Washington, both parents are responsible for the children's medical support. Under RCW 26.09.105, every child support order must require both parents to provide medical support, and the court must allocate between them the cost of health care coverage and the uninsured expenses, copays, deductibles, and everything insurance does not pay, in proportion to their incomes. Which parent carries the insurance depends on what coverage is available, what it costs, and whether the child can actually use it. Here is how the medical side of a Washington support order works.

Medical Support Is Mandatory, for Both Parents

RCW 26.09.105 leaves the court no discretion to skip the subject: whenever a child support order is entered or modified, the court shall require both parents to provide medical support for the children. Medical support has two components. Health care coverage is the insurance itself, whether employer-sponsored, private, or public. Cash medical support is a parent's monthly payment toward a premium that the other parent or a public program pays, plus that parent's proportionate share of uninsured medical expenses. For related guidance, see Do I Have to Support My Stepchildren in Washington.

The order will designate which parent enrolls the children, and the statute cares about usability, not just existence. Coverage must be accessible, which the statute defines as coverage providing primary care services to the child with reasonable effort by the custodian. An HMO network four hours from the children's home may be insurance, but it is not accessible coverage, and courts are not supposed to accept it as satisfying the obligation. For related guidance, see How is spousal support calculated in WA.

There is also a cost ceiling protecting the paying parent: a parent generally cannot be obligated to pay more than twenty-five percent of their basic support obligation toward the children's health care coverage, whether as the premium for a plan they carry or as a monthly payment toward the other parent's premium, unless the court finds it is in the child's best interests to require more. That cap keeps a modest support obligation from being swallowed whole by an expensive premium. It does not cap a parent's proportionate share of uninsured expenses.

Splitting the Premium and the Uninsured Bills

Once coverage is designated, the money gets allocated. The court must divide the cost of the children's share of the premium between the parents, and the default measure across Washington support law is proportionality: each parent bears a share matching their percentage of the parents' combined monthly net income. If you earn 60 percent of the combined income, expect to bear roughly 60 percent of the children's premium cost, whether that happens through who carries the insurance, a cash medical support payment, or an adjustment in the transfer payment.

Uninsured medical expenses follow the same logic. The statute sweeps in premiums, copays, deductibles, along with other health care costs not covered by insurance, think orthodontia, glasses, therapy, and the emergency room deductible, and parents share them in proportion to income. In practice, the residential parent usually pays the bill at the counter and then seeks reimbursement of the other parent's share, which is why every parenting file should include a routine for exchanging receipts and paying shares promptly. Disputes here are rarely about the law and almost always about documentation.

These medical provisions ride on top of the basic support calculation, which is set by the state's economic table and the parents' incomes. The medical allocation uses the same income figures, so an order built on inaccurate income numbers gets both the transfer payment and the medical split wrong at once.

Enforcement: The Order Has Teeth

Proof and follow-through are built into the system. A parent ordered to provide coverage is expected to show proof of enrollment shortly after the order is entered, within twenty days, and to keep the coverage in place. If they do not, enforcement can come from the other parent or from the state's Division of Child Support under RCW 26.18.170's procedures, which can include a national medical support notice sent directly to the parent's employer, requiring the employer to enroll the children in the available plan. In other words, a parent who simply ignores the insurance requirement can find the enrollment handled for them, through their payroll office.

Unreimbursed expense shares are collectible too. A parent who accumulates months of unpaid copay shares can be pursued for the amount, with the same collection machinery that backs the monthly transfer payment, and persistent nonpayment risks contempt. On the flip side, a parent being billed for phantom or padded expenses is entitled to demand the receipts and insurance explanations of benefits behind every claim, and wage withholding mistakes on the support side have their own fix, described in how do I stop or correct a child support wage withholding order.

When Circumstances Change

Medical support is one of the most change-prone parts of any support order. Parents switch jobs and lose employer coverage; premiums spike; children age into orthodontia or therapy; a parent's income shifts and the old proportions no longer fit. The order controls until it is modified, so a parent who quietly drops coverage or starts ignoring the allocation is violating the order no matter how reasonable the underlying change felt. The correct move is a modification, updating the coverage designation, the percentages, or the cash medical amount to match the new reality, and doing it promptly, because support modifications generally reach forward, not backward.

The Reimbursement Routine That Prevents Litigation

Most medical support fights are bookkeeping fights, and a two-paragraph routine in the order prevents nearly all of them. The order should set a deadline for presenting expenses, receipts and the insurer's explanation of benefits within 30 days, say, a deadline for reimbursement after presentation, and a channel, email or a co-parenting app, so nothing depends on a text thread nobody can find. It should also address the recurring flashpoints by name: orthodontia, counseling, and elective or out-of-network care, which are the categories where "uninsured expense" and "unilateral spending decision" collide. A parent contemplating a large elective expense does well to get written agreement first, because courts are more sympathetic to a parent surprised by a $6,000 bill than to one who ignored a share of the pediatrician's invoices. Keep a running spreadsheet, reconcile it quarterly, and the proportional-share system works the way the statute intends, quietly.

Get the Medical Side Right From the Start

A support order that handles insurance and uninsured expenses precisely, who carries coverage, how premiums are shared, how reimbursement works and on what deadline, prevents years of receipts-and-resentment friction. One that hand-waves the subject guarantees it. The Law Office of Chad Foster builds and enforces child support orders throughout Snohomish County with the medical support details nailed down. Call 425.785.8679 to get your children's health care costs allocated the way the statute intends.