Gender-affirming care laws in Idaho draw a hard line at age 18: medical transition interventions are a felony to perform on minors, no public dollars can pay for transition-related care at any age, and birth certificates must show the sex recorded at birth. Adults can still get hormone therapy and surgery legally, but only through private providers paid with private insurance or out of pocket.
What’s Banned for Minors
Idaho Code Section 18-1506C, the Vulnerable Child Protection Act, prohibits healthcare providers from performing certain interventions on anyone under 18 when the purpose is to align a child’s physical characteristics with a gender identity that differs from their biological sex.1Idaho State Legislature. Idaho Code 18-1506C – Vulnerable Child Protection
On the surgical side, the law bars procedures that would alter or construct genital tissue to differ from the child’s biological sex, along with mastectomies performed for gender-transition purposes. On the pharmaceutical side, providers cannot prescribe puberty-blocking medication to stop or delay normal puberty, high-dose testosterone to female patients, or high-dose estrogen to male patients when the goal is gender transition.
The ban targets interventions used for gender transition specifically. The same medications and procedures remain legal when prescribed for other medical conditions. A child receiving puberty blockers for precocious puberty, for instance, falls outside the scope of the statute.
The Intersex Exception
The law carves out an exception for children born with a medically verifiable genetic disorder of sex development. That covers situations where external sex characteristics are ambiguous at birth, where chromosomal patterns do not follow typical male or female structures, or where a child has both ovarian and testicular tissue. In those cases a physician may perform interventions based on a good-faith medical decision made with the child’s parent or guardian.1Idaho State Legislature. Idaho Code 18-1506C – Vulnerable Child Protection
The exception requires a medical diagnosis confirmed through genetic testing. It does not apply to children with a gender dysphoria diagnosis alone.
Is the Minor Ban Currently in Effect?
Yes. The Vulnerable Child Protection Act is fully enforceable statewide with no pending legal challenges. On June 18, 2025, the U.S. Supreme Court decided United States v. Skrmetti, upholding Tennessee’s nearly identical ban and holding that such laws do not trigger heightened constitutional scrutiny.2Supreme Court of the United States. United States v. Skrmetti, No. 23-477 After that ruling closed off the constitutional path, the families challenging Idaho’s law dismissed their lawsuit, and the Attorney General’s office announced that all remaining injunctions were dissolved.3Idaho Office of Attorney General. AG Labrador Announces Idaho’s Vulnerable Child Protection Act Now Fully Enforceable After Lawsuit Dismissal
What Adults Can Still Access
Adults 18 and older can legally obtain gender-affirming medical care in Idaho. Hormone therapy and surgical procedures remain lawful through private healthcare providers, and no Idaho statute criminalizes a provider for delivering these services to an adult patient.
The narrowing has happened on the payment and facility side. Public funding restrictions have pushed all transition-related care into the private market. Adults on Medicaid or state employee insurance cannot use that coverage. Those with private insurance should check their specific plan, because Idaho does not require private insurers to include or exclude transition-related coverage. Paying out of pocket for hormones or surgery without insurance can be substantial.
Public Funding and Facility Restrictions
House Bill 668, signed in 2024, blocks the use of any public funds for gender-transition procedures regardless of the patient’s age. The prohibition reaches all state tax revenue, county funds, and money managed by local government entities, and it references the same list of procedures banned for minors under Section 18-1506C, extending the funding cutoff to adults.4Idaho State Legislature. House Bill 668 – Relating to Public Funds for Gender Transition
The direct impact falls on Idaho Medicaid participants and state employees. Neither program can cover any of the listed procedures when performed for gender transition. If you are enrolled in one of those plans, transition-related care is not a covered benefit.
HB 668 also restricts where care can be delivered. No state-owned, county-owned, or locally government-operated facility may be used to provide these procedures. Physicians and other healthcare professionals employed by the state or local government cannot perform them in the course of their public employment, even on adult patients who would pay out of pocket. Public hospitals and university-affiliated medical centers are effectively out of reach. Private facilities that receive no state or local government funding are not subject to the location restrictions.
Birth Certificates and Name Changes
Idaho Code Section 39-245A treats the sex listed on a birth certificate as a material fact of birth. Within one year of filing, an amendment requires a notarized affidavit signed by the parents and the attending physician declaring the original entry incorrect. After one year, the only path is a court proceeding where the person must prove the original recording involved fraud, duress, or material mistake of fact.5Idaho State Legislature. Idaho Code 39-245A
A 2018 federal court injunction had blocked Idaho from enforcing this policy for years. On January 8, 2026, that injunction was dissolved by agreement of both parties, and the Idaho Department of Health and Welfare can now enforce the statute for the first time since 2018.6Idaho Office of Attorney General. Attorney General Labrador Secures Court Order Ending Yearslong Block on Idaho’s Birth Certificate Law
Legal name changes follow a separate, standard civil process that is not specific to gender identity. You file a petition for name change with the district court, publish notice of the hearing in a county newspaper once a week for four consecutive weeks, and attend a hearing where a judge decides whether to grant the change. The Idaho courts publish standardized forms.7Idaho Court Self-Help Center. Name Change Filing fees and publication costs vary by county, and the process typically takes at least a month because of the publication requirement.
Schools: Bathrooms and Pronouns
Two Idaho laws reach into public schools. Senate Bill 1100, passed in 2023 and permanently in effect after legal challenges were dismissed in May 2026, requires students in public schools to use bathrooms and locker rooms that match their sex assigned at birth. Schools must provide reasonable accommodations for students who do not wish to use the facilities corresponding to their birth sex, but shared facilities designated for the opposite sex are not an option.
House Bill 538, effective July 1, 2024, addresses names and pronouns. Teachers and school employees cannot be required to refer to a student by a name or pronouns that do not align with the student’s birth sex. A teacher who obtains parental consent may use a student’s preferred name or pronouns, but no district can discipline a teacher for declining to do so. Public employees disciplined over pronoun use have the right to sue their school district.
Penalties for Providers
A healthcare provider who performs any of the banned interventions on a minor for gender-transition purposes commits a felony. The statute carries a prison sentence of up to ten years.1Idaho State Legislature. Idaho Code 18-1506C – Vulnerable Child Protection
The professional consequences can reach further than the criminal ones. A felony conviction triggers review by state licensing boards, which can suspend or permanently revoke a medical license. Under Idaho’s participation in the Interstate Medical Licensure Compact, a license revocation or suspension in Idaho automatically affects licenses the provider holds in other compact member states.8Idaho State Legislature. Idaho Code 54-1852 – Disciplinary Actions