Brazil prosecutors sue over early-treatment rule for intersex babies; medical council says it adds safeguards

Brazil's Federal Public Prosecutor's Office (MPF) has asked a federal court in Porto Alegre to strike down the core of the medical council's new rule on intersex children. That rule says babies born with variations in sex characteristics should get "early investigation" aimed at an "adequate definition of sex and treatment in timely fashion." Prosecutors say that wording manufactures clinical urgency and pushes families toward irreversible genital surgery before a child can consent. The Federal Council of Medicine (CFM) approved the rule in February. It calls it a safer, evidence-based update. For the first time, the rule requires mixed specialist teams, written consent, the child's assent where possible and ethics committees.

The lawsuit, civil public action No. 5070180-36.2026.4.04.7100, was announced by the MPF's Rio Grande do Sul office on November 3, 2026, and drew national attention on November 9 when UOL and Veja reported it. It names both the CFM and the federal government. No court ruling on an injunction had been reported as of November 9, and the CFM had not published a response to the suit on its news portal.

What the prosecutors are asking the court to do#

The MPF wants two things. First, it asks the court to suspend and then annul Article 2 of CFM Resolution No. 2,455/2026, the sentence that directs early investigation and timely treatment. Second, it asks the court to order the Ministry of Health to act within six months. The ministry would write national care guidelines for intersex people in the public health system (SUS). It would also create a national registry of intersex births and add the subject to health-school courses.

The legal theory has two parts. Against the CFM, prosecutors argue that a professional council created rules restricting the fundamental rights of children without a statute authorizing it, and so exceeded its regulatory power. They cite the constitutional principles of human dignity, non-discrimination and "absolute priority" for children. They also cite the UN Convention on the Rights of the Child and the American Convention on Human Rights. Against the federal government, they argue that the lack of any SUS policy for intersex people breaches the Constitution. They also cite Law 8,080 of 1990, which organizes the public health system.

On the medicine, the MPF's filing says there is no long-term evidence that early surgery helps children. It lists harms it links to such procedures: chronic pain, loss of sexual sensation, involuntary sterilization and lasting psychological distress. It distinguishes those operations from interventions that are genuinely urgent to protect life or health, which it does not seek to stop. It also objects to the term "disorders of sex development," which it calls outdated and prejudicial.

What the resolution actually says#

The text matters because both sides describe it very differently. The resolution was approved at the CFM's plenary session on February 26, 2026, published in the official gazette on May 4 and corrected on May 18. It revokes Resolution 1,664 of 2003, which had governed the field for 23 years and which the MPF's federal citizens' rights office had criticized in a 2023 technical note.

Article 1 defines "disorders of sex development" as conditions in which chromosomal, gonadal or bodily sex differ. It says conditions once called intersex, hermaphroditism or "anomalies of sex differentiation" are now grouped under that single label. Article 2 is the sentence the MPF challenges. Articles 3 through 8 set out the rest of the framework:

Article 4 requires six fields: pediatrics or neonatology, pediatric endocrinology, medical genetics, pediatric or general surgery, gynecology or urology, and psychiatry. Psychology, social work and nursing may join. Article 4 also says guardians and the patient must be informed so they can take part when the "sex of rearing" is decided.

Article 6 is the clause that critics and defenders read most differently. It does not ban non-urgent irreversible surgery on children. It allows it after "reasoned analysis" by the team, with the informed participation of guardians and the assent of an informed minor. Its single paragraph forbids surgery that would set a child's phenotype against their chromosomal sex, with exceptions. The version corrected on May 18 lists androgen insensitivity syndrome and de la Chapelle syndrome as those exceptions. The council's PDF still shows both the corrected paragraph and the earlier wording. That earlier text defined the exceptions by chromosomes and by how masculine or feminine the genitals looked.

How the medical council defends it#

When it published the rule, the CFM said it was moving from a general 2003 model to a structured approach "aligned with evidence-based medicine and contemporary bioethics." It presented the consent rules as new safeguards. "Irreversible surgical procedures, when not urgent, may only be performed after the medical team's reasoned analysis and the informed participation of those involved, which represents an advance in protection against inappropriate interventions," the council said.

The rapporteur, federal councilor Bruno Leandro de Souza of Paraíba, argued that delay itself carries risk. "The absence of early diagnosis, specialized follow-up and technical guidance can cause significant suffering for the family and compromise the child's emotional, social and affective development, as well as affect their mental health throughout life," he said. He said each decision must fit the patient and follow four ethical principles: doing good, avoiding harm, autonomy and justice. The guide, he said, will always be "the best interest of the patient," with the family taking part and "respect for the progressive autonomy of the individual."

The council also stressed that the rule is "strictly medical" and does not address gender identity or transgender care. That distinction matters because the CFM regulates care for gender incongruence and dysphoria under a separate 2025 text, Resolution 2,427, which has its own critics and defenders. The pediatric endocrinology department of the Brazilian Society of Endocrinology and Metabolism called the resolution "a significant milestone" and said two of its members took part in drafting it.

Read against the 2003 rule, the CFM's case has some textual support. The old resolution, as that 2023 technical note summarized it, treated these conditions as a "biological and social urgency" calling for early "definition of gender." The new text drops "social urgency," adds a written-consent requirement, an ethics committee and a duty of lifelong follow-up, and limits sex-discordant surgery. What it keeps, and what the lawsuit targets, is the instruction to move early.

Why critics say the safeguards are not enough#

The Federal Council of Psychology (CFP), the regulator of Brazil's psychologists, answered the resolution on May 22. Its note argues that "assent of the informed minor" is a vague idea for babies and young children who cannot give informed consent. It adds that the rule "does not prohibit normalizing surgeries on babies and children." Its sharpest line: "What the CFM's text offers is a protocol for administering violations, not for eradicating them."

The CFP points to its own Resolution 16 of 2024, in force since August 2024. It calls intersex traits "a natural variation of biological sex." It also bars psychologists from writing reports that support surgery or hormones meant to shape gender or "normalize" genitals. That creates a practical conflict the MPF highlights. A specialist team that includes a psychologist may be asked to endorse a procedure that the psychologist's own council forbids them to endorse. The CFP also said that the advocacy group Intersexo Brasil and other organizations were excluded from the CFM's revision process.

In the Chamber of Deputies, Erika Hilton chairs the Committee for the Defense of Women's Rights. The deputy from the Socialism and Liberty Party (PSOL) filed legislative decree bill PDL 354/2026 on May 6 to suspend the entire resolution. Her justification says the CFM's new terms rest on the 2006 "Chicago Consensus," which she calls contested and drafted without intersex people. She also argues that the council took over Congress's power to make law on bodily integrity and the consent of minors. She invokes Article 49, item V, of the Constitution, which lets Congress halt regulatory acts that exceed their authority. Veja reported that the MPF action followed lobbying led by Hilton.

The politics: a court, a committee and a crowded Congress#

The two challenges move on different tracks. The MPF suit puts the question before a federal judge in Porto Alegre, where the first decision will be whether to suspend Article 2 while the case proceeds. Hilton's bill needs a political path: the Chamber's tracking page showed it awaiting an initial referral by the Chamber president. That step is not trivial. The fight over who will hold the gavel is still open, and a legislative decree needs majorities that a left-wing party lacks on its own. A 567politics analysis of Lula's narrow base in the incoming Congress explains why proposals from the left now depend on the center-right blocs. Where PSOL sits relative to those blocs is shown in the 567politics Brazil party spectrum, a set of dated editorial estimates rather than measured scores.

No public statement from the Lula government on the lawsuit had been found as of November 9, even though the federal government is a defendant. The Ministry of Health's position on the request for national SUS guidelines is therefore unknown. Likewise, no conservative party or caucus statement specifically on this lawsuit was found; the visible defenders of the rule so far are medical bodies, not parties. The perspectives of intersex adults who support early surgery, and of parents who chose it, were also not found in published sources reviewed for this story.

How Brazil compares#

The MPF's filing points to Colombia, Malta, Portugal, Germany and Greece as countries whose courts or laws restrict early surgery. Two European examples illustrate how much detail such rules can carry.

Germany's civil code, in Section 1631e of the BGB, limits what parents can approve. They may not consent to treatment whose only aim is to make a young child look male or female. Other genital operations with that effect are allowed only if they cannot wait for the child's own decision. They normally need a family court's approval. The court is guided by a panel that must include a pediatric endocrinologist, a psychologist or child psychiatrist, and an ethics specialist.

Spain takes a third route. Its 2023 equality law is the statute the opposition leader has pledged to repeal, as a 567politics report on Feijóo's promise to scrap the trans law explains. Article 19 of Law 4/2023 bans "genital modification practices" on children under 12 unless medical needs require them. Between 12 and 16, they are allowed only at the minor's request, when the child can give informed consent. Repeal debates there have centered on gender self-identification, not on that article.

Brazil's resolution takes a different approach from both: it relies on professional teams, documented consent and ethics committees rather than an age threshold or court approval. Supporters see that as flexibility for complex cases; critics see it as leaving the key decision with the same specialists who would perform the surgery.

What the evidence can and cannot settle#

The dispute turns partly on facts that neither filing settles. The MPF says long-term evidence of benefit from early surgery is lacking; the CFM says its rule is evidence-based and that delay causes harm. Both claims are stated by the institutions making them, and this story has not independently assessed the clinical literature. What can be checked is the text, and it supports parts of each reading. The resolution adds consent and review steps the 2003 rule lacked. It also still permits non-urgent irreversible surgery on children who cannot consent.

1. 2003CFM Resolution 1,664 calls for early definition of sex
2. 2023MPF citizens' rights office issues technical note 6/2023 against it
3. Aug 2024Psychology council's Resolution 16/2024 takes effect
4. Feb 26, 2026CFM plenary approves Resolution 2,455
5. May 4, 2026Resolution published in the official gazette
6. May 6, 2026Erika Hilton files PDL 354/2026 to suspend it
7. May 18, 2026Correction to the surgery exceptions published
8. May 22, 2026Psychology council publishes its objection
9. Nov 3, 2026MPF files suit in Porto Alegre federal court

Source: CFM, MPF, CFP, Chamber of Deputies

The next concrete markers are an injunction decision in Porto Alegre and any referral of Hilton's bill by the Chamber president. Until a court acts, Resolution 2,455 remains in force, Article 2 included.

Differing perspectives

Should Brazil's medical council rule on early diagnosis and treatment of intersex children stay in force?

Each position is summarized as its supporters make it, with equal weight and in alphabetical order. A summary is not an endorsement; the evidence for each is weighed in the story above.

• Annul Article 2 and create SUS guidelines

  Who holds it: Federal Public Prosecutor's Office (MPF) in Rio Grande do Sul

  Prosecutors argue that directing early investigation and timely treatment to define a newborn's sex creates an artificial urgency that encourages irreversible operations made to fit social and aesthetic norms. They say the council exceeded its regulatory power, that long-term evidence of benefit is lacking, and that the federal government must issue national SUS care guidelines, a birth registry and health-school training within six months.

  In their words: Ministério Público Federal, Procuradoria da República no Rio Grande do Sul ↗

• Defer surgery until the person can consent

  Who holds it: Federal Council of Psychology (CFP); intersex advocacy groups it cites, including Intersexo Brasil

  The psychology council argues that the resolution still permits normalizing surgery on babies and children and that the assent of a young child is too vague a safeguard. It treats intersex traits as natural variation rather than disorder, bars psychologists from endorsing such procedures, and says non-urgent interventions should wait for the person's own free and informed consent.

  In their words: Conselho Federal de Psicologia ↗

• Keep the resolution as written

  Who holds it: Federal Council of Medicine (CFM), rapporteur Bruno Leandro de Souza; endorsed by the SBEM pediatric endocrinology department

  The council argues that the 2026 resolution replaces a vague 2003 rule with structured, evidence-based care: a six-specialty team, essential hormone and genetic tests, written consent from guardians, the child's assent where possible, ethics committees and lifelong follow-up. It says non-urgent irreversible surgery now requires a reasoned team review, and that delaying diagnosis and specialist guidance can cause serious suffering for families and harm a child's emotional development.

  In their words: Conselho Federal de Medicina ↗

• Suspend the whole resolution by decree

  Who holds it: Deputy Erika Hilton (PSOL-SP), author of PDL 354/2026

  Hilton argues that Congress should halt the entire resolution under Article 49, item V, of the Constitution because the council legislated on bodily integrity and children's consent, matters reserved to Congress. She says its terminology rests on the contested 2006 Chicago Consensus, that intersex people were not heard, and that irreversible non-consensual interventions are treated by UN and inter-American bodies as rights violations.

  In their words: Câmara dos Deputados (PDL 354/2026) ↗

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