Okla. Stat. tit. 85, Rule 50
D. Form 18 Proceedings:
2. Either party aggrieved by the Administrator's order directing or denying the payment of medical charges may appeal such order to a judge of the Workers' Compensation Court by filing a Form 19 and a Form 9 within ten (10) days after the Administrator's order is entered. The Form 19 must be appropriately marked to indicate that it is being used to appeal the Administrator's order. The following shall be attached to the Form 9 when filed:
d. An explanation of how each portion of the Administrator's order urged in error conflicts with the Schedule of Medical and Hospital Fees.
The appealing party must mail a copy of all materials which are filed in the appeal to each opposing party. No response to the appeal of the Administrator's order is required.
E. Form 19 Proceedings:
1. A rehabilitation provider, case manager or a medical provider may institute proceedings to recover charges rendered for rehabilitation or health services, medicines or supplies which have been provided to a claimant, by the filing of a Form 19, Part I. Request for Payment of Charges for Health or Rehabilitation Services if the provider has not received payment within sixty (60) days from the date the charges were submitted to the uninsured or own risk employer or insurance carrier. A Form 19 may also be filed if the uninsured or own risk employer or insurance carrier has refused liability for the payment of the charges on the following grounds:
Adopted by order of the Supreme Court,