This is what I could find:
Arizona Birth Certificate Laws
Arizona will amend the gender marker on a birth certificate "for a person who has undergone a sex change operation or has a chromosomal count that establishes the sex of the person as different [than on original certificate]." (Ariz. Rev. Stat. § 36-337 (A)(3) (2006)).
To apply for an amended birth certificate the applicant must submit:
a birth certificate request form
an affidavit to correct a birth certificate
a notarized letter from the physician verifying the requirements above, if requesting a gender marker change
a certified copy of the court ordered name change, if requesting a name change
and any applicable fees paid by money order (no personal checks)
Note: Arizona recommends discussing your case directly with the Office of Vital Records before submitting documentation.