Nevada has explicit insurance guidance on transgender-related health care.

Regulations:

• NAC 686A.110 – 686.160
  Summary:

  “Restricting, reducing, modifying or excluding benefits relating to coverage involving the genital organs of only one sex when the restriction, reduction, modification or exclusion is not required for both sexes.” NAC 686A.140(7).

Bulletins and Announcements:

• Bulletin: Bulletin No. 15-002, Prohibition of Denial, Exclusion, or Limitation of Medically Necessary Health Care Services on the Basis of Gender Identity or Expression (2015)
  Issued by: Nevada Department of Business and Industry, Division of Insurance
  Issued on: June 25, 2015
  Summary:

  “prohibiting 'the denial, exclusion, or limitation of benefits relating to coverage of medically necessary health care services on the basis of sex as it relates to gender identity or expression.'”