Hi Queen,
This website for Colorado (I assume that's where your custody decree is - that's where it says you are from???) states that both parents share insurance and medical costs.
https://childsupport.state.co.us/siteuser/do/vfs/Frag?fil...
It says this:
A basic support obligation is determined using the monthly gross incomes of both parents and information about what intact families spend on their children. The parents share the basic support obligation based upon their gross incomes. The noncustodial parent's share of the obligation establishes the amount of the child support order. The amount of child support a parent pays can also be affected by the amount of parenting time (visitation) with the child. The parents also share the costs for childcare, medical insurance and uninsured medical expenses.
Additionally if you go to the actual instructions to calculate support it says this on page 5:
http://www.courts.state.co.us/Forms/PDF/jdf1822%20instruc...
(E) Health Insurance
Amounts paid by parties or by a parties’ spouse for health insurance premiums which cover the child(ren)
subject to the order are apportioned between the parties. The amount included in the child support calculation is
the amount of the health insurance premium actually attributable to the child(ren) subject to the order. If this
amount is not available or cannot be verified, the total cost of the premium is divided by the total number of
persons covered by the policy and then multiplied by the number of children covered by the policy who are
subject to the order. This result is entered on Line 6c on Worksheet A or Line 10c on Worksheet B. A space to
assist in this calculation is provided on page 2 of each worksheet.
Health insurance includes medical, or medical and dental insurance carried by either parent or by the parties’
spouse. The parent requesting an adjustment for health insurance premium costs must submit proof that the
child(ren) is enrolled in an insurance plan and proof of the cost of the premium.
There are a TON of resources at that website. It should be able to clear up any questions you have. Or you can talk to your lawyer.