Thank you for the question.
I would perhaps keep the exception of an intervention for the health. I don't think you need to keep “for the purpose of...having normal reproductive functions or normal sexual appearance or function”.
In the cases of intersex children, as I understand it, the surgery is not going to be able to generate reproductive capacity that the person does not have. Often, a botched surgery can destroy a person's capacity for sexual pleasure, and so on.
I would slice away the whole idea that there is the normal appearance or sexual function with nothing pressing medically, and that this alone is the basis for intervention.