TLDR: What was the first use of the term "gender confirmation surgery"? Was it used before, after, or contemporaneously with the term "sex reassignment surgery"?
An NPR article today (2019-05-16) discusses the case of Adree Edmo, an inmate in Idaho who's suing the state to provide surgical intervention for treatment of gender dysphoria. Both the title of the article and URL use the phrase “sex reassignment” to refer to the surgery.
However, for most of the article, the phrase “gender confirmation” is used. After a quotation by Edmo’s lead attorney, the article states the following:
If Edmo wins her case, she’d become the first inmate to get gender confirmation surgery – also known as sex reassignment surgery – through court order, and it could open doors for others.
I hadn't heard the term before reading this article, and am wondering about its origin.
In another NPR article from June 2015 that also discusses this surgery, the term “sex reassignment” is used exclusively.
In the WPATH Standards of Care that discusses this surgery (and is linked to from today’s NPR article), the term “sex reassignment” is used exclusively.
Per Google Ngram Viewer, the term “gender confirmation surgery” doesn't appear in its collection of books.
Per Wikipedia(emphasis in original):
There are numerous other expressions that are used or have been used to refer to sexual reassignment surgery, including sex change operation, gender reassignment surgery, gender confirmation surgery, genital reconstruction surgery, gender-affirming surgery, and sex realignment surgery.
The American Society of Plastic Surgeons (ASPS) calls this procedure Gender Confirmation Surgery or GCS. Another term for SRS includes sex reconstruction surgery.
I was able to find a number of articles that do use the term "gender confirmation surgery", including a Huffington Post entry by a plastic surgeon that explains why he uses the term (as opposed to "sex reassignment").
As noted by @user240918, Merriam Webster indicates that the first use of this term was 1993; however, I've been unable to find this 1993 source. What was the first use of this term?
I want to emphasize that I have no interest in denigrating this term: I'm just curious about its origin.