Okla. Admin. Code § 365:10-5-181
A good faith estimate of the allowable fee pursuant to Section 6055(F) of Title 36 must be provided upon request within seventy-two (72) hours of receipt of said request. Request may be made by telephone, fax or mail.
Added at 17 Ok Reg 1659, eff 7-14-00
Amended at 25 Ok Reg 1643, eff 7-14-08