Okla. Admin. Code § 310:105-7-2
No person shall disinter the dead body of a human being for removal from one grave to another in the same cemetery, for removal to another cemetery, for cremation, or for any other purpose without obtaining a permit therefor from the State Commissioner of Health. The permit shall be signed by the next of kin of the deceased and a licensed Oklahoma funeral director responsible for performing the disinterring. In the event the next of kin's signature cannot be obtained a certified copy of a court order from a court of competent jurisdiction approving the disinterment shall be required. The permit shall be denied by the Commissioner of Health, if, in his opinion, the disinterment would be hazardous to the public health. The removal of bodies prepared by licensed embalmers and deposited in receiving vaults shall not be regarded as disinterments until the expiration of thirty (30) days.
Okla. Admin. Code § 310:105-7-2