Okla. Admin. Code § 317:30-5-701
Surfaces requiring dental treatment must be indicated using standard Latin abbreviations. The following capital letters are used on claims:
Added at 12 Ok Reg 751, eff 1-5-95 through 7-14-95 (emergency)
Added at 12 Ok Reg 3131, eff 7-27-95
Amended at 23 Ok Reg 2489, eff 6-25-06