Okla. Admin. Code § 317:30-3-11.1
(c) For dates of service provided on or after July 1, 2015, the provider's resubmission of the claim must be received by the Oklahoma Health Care Authority no later than 12 months from the date of service. The only exceptions to the 12 month resubmission claim deadline are the following:
Added at 17 Ok Reg 3468, eff 8-31-00 (emergency)
Added at 18 Ok Reg 1130, eff 5-11-01
Amended at 32 Ok Reg 719, eff 7-1-15 (emergency)
Amended at 33 Ok Reg 791, eff 9-1-16