WPATH SOC8 Criteria

By Nick Peplow·Founder and editor

Last reviewed 9 September 2026· How this site is researched

The WPATH Standards of Care, version 8 (SOC8), is the document most surgeons, insurers and public health systems point to when they decide whether you are "eligible" for surgery. It was published in 2022 and replaced SOC7, which had been in place since 2012. If you were told years ago that you needed two letters, twelve months on testosterone and a year of "real-life experience", a lot of that has changed. This page goes through what SOC8 actually says, procedure by procedure, and where the people applying it still diverge from it.

One thing to be clear about: SOC8 is a set of recommendations, not a law. Your surgeon, your insurer or your national health service decides what to require. Most borrow from SOC8 heavily, but plenty still run on older rules, so always check the specific requirements of whoever is paying for and performing your surgery.

The core criteria for adults

SOC8 sets out a shared set of criteria for gender-affirming surgery in adults. Paraphrased, they are:

• Gender incongruence is marked and sustained.
• You meet the diagnostic criteria for gender incongruence in your country's system, if a diagnosis is required there (the ICD-11 code, or DSM-5 gender dysphoria in the US).
• You can understand the effects of the surgery and give informed consent.
• Other possible causes of apparent gender incongruence have been identified and excluded.
• Mental health and physical conditions that could negatively affect the outcome have been assessed, and risks and benefits discussed.
• For procedures that remove or affect the gonads or genitals, you have been on hormone therapy for at least six months, unless hormones are not clinically indicated or you do not want them.

That last point is where SOC8 differs most from SOC7. Twelve months on hormones became six, and it only applies to gonadectomy and genital surgery. Living in your gender role for a set period is no longer a criterion at all.

What SOC8 says per procedure

Chest (top) surgery. No hormone requirement. Testosterone is not a prerequisite, and SOC8 says so explicitly. You need one assessment from a qualified health professional. See Testosterone Requirements for how being on T still affects results even when it is not required.

Hysterectomy and oophorectomy. Six months of hormone therapy is recommended before gonadectomy unless it is not indicated or wanted. The reasoning is partly that people should have time to experience hormonal changes before making a permanent, sterilising decision. SOC8 also expects you to have been counselled on fertility options; see Fertility Preservation.

Metoidioplasty and phalloplasty. Same six-month hormone recommendation, plus the general criteria. In practice most metoidioplasty surgeons want considerably longer than six months on testosterone because the procedure depends on clitoral growth, so the surgeon's requirement will usually be stricter than SOC8.

The letter requirement

SOC7 asked for two independent referral letters for genital surgery. SOC8 asks for one, from a health professional with competence in assessing transgender and gender diverse people. The assessor does not need to be a psychiatrist or psychologist; a GP, nurse practitioner or other clinician with the right experience can do it.

This is the change that has been adopted least evenly. Many US insurers still require two letters for genital surgery. NHS England still runs its own two-opinion process. Some surgeons say one letter but their hospital privileges committee says two. Letters of Support covers what the letter needs to contain and how to get one without waiting months.

Age

The published SOC8 does not list minimum ages for specific surgeries. A draft version included them, and they were removed in a correction shortly after publication. What remains is a separate chapter on adolescents that says chest surgery can be considered for minors on a case-by-case basis with parental involvement and a multidisciplinary team, and that genital surgery should generally wait until the age of legal majority. Regional law is now the bigger factor for anyone under 18; see FTM Surgery for Under-18s.

What SOC8 does not require

Worth listing, because you may still be told otherwise:

• No requirement to be on testosterone for top surgery.
• No requirement to have lived "full time" in your gender for any period.
• No requirement to have changed your legal name or gender marker.
• No requirement to want every procedure, or to want a binary outcome. SOC8 explicitly supports non-binary people accessing surgery; see Surgery Access for Non-Binary People.
• No requirement for psychotherapy as a condition of surgery. Assessment is not therapy.

How this plays out in practice

In my experience, the gap between SOC8 and reality depends almost entirely on who is paying. A private surgeon operating on an informed-consent basis may ask for less than SOC8. An insurer or a public health system may ask for more. Surgeons who accept insurance tend to require whatever the strictest insurer they work with demands, because it is simpler than running two sets of rules.

Practically, that means: find out who is paying, get their written policy, and build your paperwork to that. SOC8 is a useful thing to cite in an appeal if you are asked for something it does not require, but it will not override a written insurer policy on its own. See Insurance Coverage, Appeals and Denials for how that fight works.