How long a letter stays good for
None of its own. The clock that matters is the letter's signature date against the date your request is submitted — commonly twelve months in the guideline this page transcribes.
What to do
Ask the plan for the guideline by name and number
These documents have identifiers, in the shape of a letter code and a number, and they are usually published. Ask which one applies to your procedure and ask for the version in effect on the date of your request. That document is the checklist your letter has to answer.
Find your procedure's category in it
The criteria are not one list. Pelvic and gonadal surgery, genital surgery, chest surgery, facial surgery and voice surgery each have their own, and they differ in ways that matter: how many letters, whether hormones are required, and whether lived experience is required.
Ask the surgeon for their list too
Surgeon requirements and plan requirements are different lists and they do not always agree. The letters have to satisfy both.
Check the writer meets the qualification bar
Guidelines specify who may write. A letter from someone outside the stated categories can fail on that alone, however well it reads.
Give each writer the criteria list itself
Not a summary of it. Clinicians write these constantly and are not trying to guess what a particular insurer wants; handing over the actual lettered criteria saves a revision cycle and produces a letter that answers them in order.
Check the letter ends with the numbered close
This is the part most often missing and the part that does the most work. If it ends with a paragraph of support rather than a point-by-point answer, ask for the list.
If a criterion is out of date, that is an argument
The criteria below are one insurer's, and clinical guidelines lag the standards of care they are drawn from. The lived-experience requirement is the clearest case: it is reported that the current standard of care dropped the twelve-month real-life experience requirement in 2022, while insurer policies often still carry it as legacy text. We could not read that standard directly to confirm it, so treat this as a lead rather than a fact.
If it holds for your plan, do not simply comply with it. A plan applying a criterion that the current standard of care has withdrawn is the wrong-standard argument in its clearest form: quote the plan's criterion, quote the current standard, and put them side by side. Ask your letter writers which edition they are working from, because a clinician who follows the current standard can say so in the letter.
The practical risk if you assume the criterion is current: you conclude you must wait a year before you can even ask. That is a year you may not owe.
The four facts every category asks for
Whatever the surgery, the letter is expected to establish these. They open every list in the guideline this page was transcribed from, in this order.
- You are at least 18 years old.
- You have the capacity to make a fully informed decision and to consent to treatment. Someone qualified has to say this, not you.
- You have been diagnosed with gender dysphoria, and the letter states the diagnosis.
- Any significant medical or mental health conditions are reasonably well controlled. The wording is controlled, not absent, and that distinction is the whole point.
What each kind of surgery adds
The differences are where letters most often fall short, because a writer who has done chest-surgery letters will not automatically know that genital surgery asks for two more things.
READ THE NEXT LIST AS A TRANSCRIPTION, NOT AS THE RULE THAT BINDS YOU. What follows is one insurer guideline as this site recorded it, and this page cannot re-fetch its source to confirm the version currently in force. It matters most for the twelve-month continuous lived-experience requirement below: some carriers have dropped that for adults, and quoting a requirement your plan no longer imposes invites a reviewer to hold you to it. Ask your plan, in writing, for the medical policy it applied to YOUR claim, by name and version. If its criteria are lighter than these, the lighter ones are the ones you must meet — and if it is applying a criterion its own current policy has removed, that is itself the appeal.
- Pelvic and gonadal surgery, such as orchiectomy, hysterectomy, ovariectomy or salpingo-oophorectomy: at least 12 months of continuous hormone therapy, recommended by a mental health professional and supervised by a physician, unless there is a contraindication or intolerance. Two letters.
- Genital surgery, such as vaginoplasty, phalloplasty, metoidioplasty, urethroplasty or vaginectomy: the hormone requirement above, PLUS documented 12 months of continuous full-time lived experience in your gender across a wide range of life events, PLUS regular participation in psychotherapy through that period where a treating practitioner recommended it. Two letters.
- Chest surgery, augmentation or mastectomy or reduction: no hormone requirement and no lived-experience requirement, except that augmentation alone requires 12 months of hormones and that insufficient breast development has occurred. It adds that existing chest appearance shows significant variation from normal for your experienced gender. One letter.
- Facial surgery: 12 months of hormones, plus that facial appearance shows significant variation from normal for your experienced gender, plus that the specific procedure directly addresses that variation. Each procedure is judged separately, so one can be approved while another is called cosmetic. One letter.
- Voice surgery: no hormone requirement except for masculinization, plus that existing vocal presentation shows significant variation from normal for your experienced gender. One letter.
Who is allowed to write it
At least one writer must hold a doctoral degree, such as a PhD, MD, EdD, DSc, DSW or PsyD, or a master's degree in a clinical behavioral science field, such as an MSW, LCSW, NP, APRN, LPC or MFT, and must be capable of adequately evaluating co-occurring psychiatric conditions.
Where two letters are required, the assessors are expected to have assessed you independently. If the first is from your own psychotherapist, the second is expected to come from someone whose role with you has only been evaluative. Two separate letters work, and so does one letter signed by both writers when they practice together.
The letters must be signed within 12 months of when the request is submitted. This is the mechanism behind letters going stale: it is the signature date against the submission date, not the surgery date, and 12 months is shorter than most people assume.
Lived experience, if your procedure requires it
Where the criterion applies it asks for something specific: 12 months continuous and full time, across a wide range of life experiences and events through the year, given as family events, holidays, vacations, and season-specific work or school. It includes having come out to partners, family, friends and community, across settings.
The documentation is expected to include the start date of living full time in your gender. A plan may also ask to verify it, by contacting people who have related to you in that role or by requesting a legal name change document. Knowing that in advance is better than meeting it in a request for more information with a clock running.
Address other conditions, do not omit them
The instinct is to leave a depression or anxiety diagnosis out in case a reviewer uses it against you. That backfires: the conditions are already in the clinical record the plan can request, and a letter silent on them looks like it is avoiding something.
The criterion asks that conditions be reasonably well controlled, not absent. So the move is to name the condition and then say the thing the reviewer needs: that it is identified, being treated, reasonably well controlled, and not a contraindication to surgery. One sentence from a clinician closes the question. Leaving it open invites the reviewer to answer it themselves.
The guideline singles out a short list of severe conditions involving impaired reality testing, and asks for an effort to improve those with medication or psychotherapy before surgery is contemplated. If one of those is in your record, the letter should say what that treatment has been.
The numbered close
End the letter with a short list answering the plan's criteria in order, one line each, using the plan's own lettering and its own words. Something like: to summarize my support of the medical necessity of this procedure, per the plan's coverage criteria, followed by the numbered points.
Why this works is not subtle. Look at the criteria above and notice that they are lettered A through H. A reviewer is literally ticking them off. A letter that ends in a matching list can be approved without interpretation; a letter that ends in a paragraph of warm support makes the reviewer extract the answers themselves, and gives them room to decide an element was not met.
Answer every element, including the ones that seem obvious. Age and capacity feel too trivial to state and are on the list, so state them.
Two things worth knowing that are easy to miss
Hair removal to treat a tissue donor site for a planned phalloplasty or vaginoplasty is generally treated as medically necessary in its own right, rather than as cosmetic hair removal. If it is being denied as cosmetic, that is worth raising specifically.
Procedures to fix complications of an earlier gender-affirming surgery, such as stenosis, scarring, chronic infection or pain, are generally not treated as new gender-affirming surgery, so the whole letter apparatus should not be demanded again for them.
Common questions
- How many letters do I need?
- Under the commercial guidelines this describes: two for genital, pelvic and gonadal surgery, one for chest, facial and voice surgery. State rules can be lighter — some state Medicaid programs ask for only one letter. Ask your plan rather than assuming either way.
- How recently must a letter be signed?
- Twelve months before the request is submitted, in the guideline this is drawn from. Windows vary by plan and this one is shorter than the eighteen months people often quote, so check the number rather than the folk figure.
- Can the same person write both letters?
- Generally not, if two are required. The assessors are expected to have assessed you independently, and if the first is your own therapist the second is expected to be someone with only an evaluative role. One document signed by two qualified writers in the same practice is usually accepted.
- Can my clinician just use the template they already have?
- Usually yes, and it is often good. Ask them to add two things: the numbered close in your plan's own criteria language, and a sentence offering to discuss the case. Those are the parts generic templates most often lack, and the second one puts a peer-to-peer offer in the record before any denial exists.
- What if I cannot afford letters?
- Sliding-scale and free letter-writing directories exist, though availability varies. There is a link to one on the surgery letters page, which covers expiry and transferability.
Where to go next
Sources for the legal points on this page
Also on this page, without a citation yet
- That the criteria below match YOUR plan, or any plan other than the one they came from. They are transcribed from ONE insurer's published clinical guideline. The page previously said most commercial guidelines ask for the same facts and that these are the opening items of every list; that was an extrapolation from a single document and is not something we checked. Treat it as one worked example and get your own plan's document.
- That the lived-experience criterion reflects the current standard of care. It does NOT. SOC-8 was read directly on 2026-08-13 from the open-access full text at PubMed Central (PMC9553112): the phrase "real-life experience" appears once, in a bibliography entry, and "twelve months" does not appear at all. What survives is statement 5.4, a suggestion to CONSIDER the role of social transition. So the criterion below is legacy text from SOC-7 carried forward in one insurer's guideline, and that gap is itself an argument — see L-31. (An earlier version of this note said SOC-8 was paywalled to us. It is not: it is open access, and the fetch that failed was a publisher bot-block, not a paywall.)
- That the copy this was read from is current. It was published in 2023 and the insurer's site could not be reached from here to confirm a newer revision. Guidelines are revised regularly and requirements have been loosening, so an older copy is more likely to overstate what is required than to understate it.
These are specific and checkable and we have not yet checked them against a primary source. Treat them as a starting point rather than as settled, and do not put them in an appeal without confirming them.