Children's Hospital Colorado has filed a legal challenge to the Defense Health Agency's planned federal reimbursement changes to TRICARE, the health care insurance program for uniformed service members, veterans and their families. Those changes were scheduled to take effect Oct. 1, 2023. The new federal DHA rules significantly lower the amount that Children’s Colorado is reimbursed for outpatient health care services. Due to the high percentage of TRICARE patients cared for at Children’s Hospital Colorado, Colorado Springs, these new rules will disproportionally impact Southern Region operations.