Okla. Stat. tit. 85A, § 85A-85: Clean claims

Clean claims for services rendered under this act are payable

within thirty (30) days after receipt by the employer unless

disputed as to compensability or amount. "Clean claim" means a

claim that has no defect or impropriety, including a lack of any

required substantiating documentation, or particular circumstance

requiring special treatment that impedes prompt payment.