Nev. Rev. Stat. § 616C.465
1. Any claimant or dependent of a claimant who is receiving compensation pursuant to chapters 616A to 616D, inclusive, of NRS for a permanent total disability but is not entitled:
(b) To any disability income benefits from the federal social security system,
is entitled to an increase in that compensation by the same percentage as the increase in the state average monthly wage from the date of the claimant’s disabling accident or disease or from July 1, 1973, whichever is later, to July 1, 1980.
(Added to NRS by 1981, 1224)—(Substituted in revision for NRS 616.6262)