Intersex means being born with a reproductive or sexual anatomy that is neither typically female or male.  Similarly, there is Turner syndrome that occurs when a female child is born missing genes and hermaphroditism, where one is born with both ovary and testicular tissue.  The genitalia varies from completely male or female, to a combination of both but can also be ambiguous looking

Most official forms now have a "prefer not to say" option and this is certainly the case in respect of Ethnicity and Disability on applications for public funding in children cases, but "Male" or "Female" is still required to be selected and an online funding application can not be progressed until a selection is made ...