Letter of support

A letter of support is a signed letter from a qualified health professional confirming that you meet the criteria for a named gender-affirming surgery. Also called a referral letter, surgery letter or WPATH letter. Most surgeons, hospitals and insurers ask for at least one before they will book you.

Where you'll meet it

A letter of support is the first piece of paperwork a surgeon's office asks for after the consultation, and the document insurers and public systems check before they approve funding. Referral letter, surgery letter and WPATH letter all mean the same thing; I will stick with letter of support here. It exists because the WPATH Standards of Care recommend an assessment by someone experienced with trans patients, and hospitals and insurers have adopted that as a rule.

Who writes a letter of support?

A letter of support is written by a health professional with competence in assessing transgender and gender diverse people, which under SOC8 does not have to be a psychiatrist or psychologist. Licensed therapists, counsellors, clinical social workers and GPs with relevant experience all write them. Insurers narrow the list: some require a doctoral-level mental health professional for at least one letter before genital surgery, so check the written policy of whoever is paying.

How many letters of support do you need?

One letter is the SOC8 recommendation for every gender-affirming surgery, but two is still what most systems ask for before genital surgery. In practice: one for top surgery (some self-pay surgeons ask for none); one for hysterectomy, though some insurers want two because it is sterilising; and two for metoidioplasty and phalloplasty with many US insurers, NHS England and a lot of surgeons still on the older SOC7 rule. Assume two for genital surgery until your surgeon's office says otherwise.

What does a letter of support have to say?

A letter of support has to state that you meet the criteria for gender incongruence or gender dysphoria, that any health conditions are managed well enough for surgery and recovery, that you have capacity to consent, and that the writer recommends the specific procedure by name. It also carries the writer's qualifications and licence number, how long they have assessed you and, for genital surgery, how long you have been on testosterone. The named procedure matters most: a letter recommending "gender-affirming surgery" in general can be bounced by an insurer that wants to read "phalloplasty with urethral lengthening". Ask the surgeon's office for their template first.

How long does a letter of support take to get?

A letter of support takes anywhere from a few days to several years, depending on who writes it. Your existing therapist or prescribing clinician will usually write one after one or two surgery-focused sessions. Single-session assessment services in the US and UK turn one around in days by video, typically for the low hundreds of dollars or a few hundred pounds. NHS gender clinics are the slow route: the letter arrives at the end of a multi-year assessment. Many surgeons and insurers want it dated within the last twelve months, so a slipped date can mean a refreshed letter.

Is there an alternative to a letter of support?

The alternative is an informed consent pathway, where the surgeon's own team assesses your understanding and readiness instead of a third party. It is common for self-pay top surgery in the US and with some private UK surgeons, and rare for genital surgery, because many hospitals require letters as a condition of operating privileges. If you are using insurance, the insurer's letter rule applies whatever the surgeon offers. If you can only find a letter pathway, get the letter; it takes days and is not worth delaying surgery over.

Letters of Support has the full checklist, the fastest routes and the things that trip people up, and Start Here shows where the letter sits in the overall order.

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