Veterans Infertility Treatment Act of 2023 This bill requires the Department of Veterans Affairs (VA) to furnish infertility treatments, standard fertility preservation services, or both to a covered veteran or partner of a covered veteran. A covered veteran is a veteran who is enrolled in the VA health care system and has infertility or is at risk of having infertility, as determined by a licensed physician. The VA may furnish up to three completed in vitro fertilization cycles that result in live birth, or 10 attempted cycles, whichever occurs first. Additionally, the VA may furnish in vitro fertilization treatment using donated gametes or embryos. The VA must receive consent to furnish an in vitro fertilization cycle from the covered veteran, the partner of a covered veteran, and the third-party donor (if applicable). For purposes of paying travel expenses for treatment or services to the partner of a covered veteran, the VA must deem the partner to be a veteran receiving treatment or care. The VA must prescribe regulations related to the provision of infertility treatments and standard fertility preservation services as required by this bill. Prior to the enactment of such regulations, the VA must ensure that (1) counseling and treatment furnished under existing authority is available to a veteran and the veteran's partner, regardless of whether they are married; and (2) treatment under existing authority may be furnished using donated gametes or embryos.