Colorado Voters Will Decide on Sex Surgery Restrictions
Proposition 135 seeks to prohibit surgical procedures for minors intended to alter biological sex characteristics.
Updated on Sept. 25, 2026 in LGBTQand
Live Poll
Should the government restrict medical surgeries for minors when families and doctors disagree with the state?
Colorado voters will consider Proposition 135, a measure that would prohibit surgical procedures on minors aimed at altering biological sex characteristics. If approved, the policy is scheduled to take effect on January 1, 2027.
Why it matters
Supporters of the measure contend that minors lack the maturity to provide informed consent for permanent and irreversible procedures. Conversely, opponents argue that the legislation restricts access to medically necessary care and intrudes upon private family medical decisions.
The proposal excludes male circumcision and treatments for medically verifiable disorders of sex development. Currently, less than 4% of Colorado minors identify as transgender according to 2025 estimates.
The players
The Williams Institute
This research center at the UCLA School of Law focuses on sexual orientation and gender identity law and public policy.
The details
The measure would prohibit healthcare professionals from performing or providing the specified surgeries to minors and would bar state and federal funding, Medicaid reimbursement, and insurance coverage for such procedures. While Colorado law currently mandates health benefit plans cover medically necessary gender-affirming care, the state’s three largest pediatric surgical providers report they do not perform sex-based surgeries on patients under 18.
Timeline
2025: The Williams Institute released data regarding the transgender youth population.
January 1, 2027: The scheduled effective date for Proposition 135.
Culture Shift
Proposition 135 highlights a broader societal shift regarding the regulation of medical procedures for transgender minors. This measure directly challenges the current state policy that mandates insurance coverage for medically necessary gender-affirming care in Colorado.
If passed, the measure would alter insurance coverage and funding for surgical procedures involving minors across the state. Families and healthcare providers will need to adjust to new legal restrictions and potential changes in Medicaid reimbursement protocols.
The takeaway
The ballot initiative forces a state-level debate on the balance between medical autonomy and regulatory oversight for minors. Residents should monitor how the final vote influences future access to insurance-covered medical services for youth in Colorado.
Further reading
Learn more about local policy developments in the LGBTQand section.
Source note: This article includes information reported by Colorado Public Radio.
Live Poll
Should the government restrict medical surgeries for minors when families and doctors disagree with the state?
