Health First Colorado, the state's Medicaid program, is ending coverage of certain gender-affirming treatments for members younger than 18 after a federal funding restriction took hold, and Arapahoe County is warning residents that a prescription refill or a planned procedure could be caught in the fallout. The county government also warned residents who think they could be affected to contact their treatment provider.
According to Arapahoe County Government, the coverage change stems directly from a federal funding restriction, and the county is directing residents to a dedicated page on its website for more information. The county's own guidance is blunt: following the federal restriction, Colorado is ending coverage for certain treatments for members younger than 18, and families with children receiving gender-affirming care should contact their treatment provider to discuss their options, according to Arapahoe County's posted notice.
The restriction traces back to a federal rule described by KFF, which prohibits federal Medicaid dollars from covering puberty blockers, hormone therapy and surgery for enrollees under 18 in Medicaid and under 19 in the Children's Health Insurance Program. The rule does not touch counseling or psychotherapy provided as part of gender-affirming care, KFF notes, and patients already on hormone therapy may still have federal coverage for up to six months under a tapering period built into the regulation.
Coverage Change Took Effect October 13, 2026
McGuireWoods, a law firm that published a legal analysis of the rule, states the federal regulation takes effect Oct. 13, 2026. The Colorado Sun reported that Colorado's coverage suspension would begin Oct. 13, 2026. Arapahoe County's own notice lists the change as having taken effect Oct. 13, 2026.
Regardless of the exact date, the financial scope of the program is documented by the Colorado Sun, which found that Colorado Medicaid spent a little under $1.3 million on gender-affirming care for people under 19 during the 2024-25 fiscal year, including roughly $700,000 in federal funds. About 500 people under 19 received Medicaid-covered hormone therapy for gender-affirming treatment in that same fiscal year, per the outlet's reporting.
State Options Are Limited Without Lawmakers
Colorado's Department of Health Care Policy and Financing told the Colorado Sun that any ability to resume covering gender-affirming care would require legislative action — meaning the state cannot simply restore the funding on its own. Separately, a legal alert from McGuireWoods notes that the federal rule restricts payment, not the underlying care itself, and that states may continue funding the affected services using state-only dollars outside of federally matched Medicaid or CHIP programs if they choose to.
The same McGuireWoods analysis emphasizes that the rule does not prohibit federal Medicaid or CHIP payment for psychotherapy, mental health counseling or other covered mental and behavioral health treatment for beneficiaries diagnosed with gender dysphoria — a distinction that mirrors KFF's findings on counseling coverage. For families, that means behavioral health support tied to a dysphoria diagnosis remains intact even as prescription and procedural coverage narrows.
Legal Fight Already Underway
Colorado is not accepting the funding rule without a fight. Colorado Attorney General Phil Weiser sued the Trump administration over its attempt to prohibit states from using federal Medicaid funds for gender-affirming health care, according to Colorado Newsline. Weiser's office noted that more than 90% of the 30,000 public comments submitted on the proposed rule opposed it before it was finalized.
The stakes extend beyond Colorado. KFF estimates that about 130,000 young transgender people with Medicaid or CHIP coverage live in states without restrictions on gender-affirming care, underscoring how much is riding on how individual states respond to the federal funding squeeze. The underlying federal rule, published by the Federal Register, requires state Medicaid plans to withhold payment for the defined procedures for children under 18 and bars federal Medicaid and CHIP dollars from funding them.
What Families Should Know Now
Colorado's own billing guidance leaves some room for case-by-case review. The Colorado Department of Health Care Policy and Financing's gender-affirming care billing manual indicates that requests for other medically necessary gender-affirming surgeries will still be reviewed based on medical circumstances and clinical appropriateness, and that related pre- and post-operative services remain covered when tied to a covered, medically necessary surgical procedure.
For now, Arapahoe County's message to families is straightforward: anyone with a child receiving gender-affirming care through Health First Colorado should reach out to their treatment provider directly to sort out what happens next with refills, appointments or procedures already on the calendar.
