Okla. Admin. Code § 317:30-3-15
Federal regulations and rules promulgated by the Oklahoma Health Care Authority Board require that the provider retain, for a period of six years, any records necessary to disclose the extent of services the provider, wholly owned supplier, or subcontractor, furnishes to recipients and, upon request, furnish such records to the Secretary of the Department of Health and Human Services. Records in a provider's office must contain adequate documentation of services rendered. Documentation must include the dated provider's signature and credentials. The provider's signature must be handwritten or electronically submitted if the provider and the Oklahoma Health Care Authority have agreed to conduct transactions by electronic means pursuant to the Uniform Electronic Act. Electronic records and electronic signatures must be in accordance with guidelines found at OAC 317:30-3-4.1. Where reimbursement is based on units of time, it will be necessary that documentation be placed in the member's record as to the beginning and ending times for the service claimed. All records must be legible. Failure to maintain legible records may result in denial of payment or recoupment of payment for services provided when attempts to obtain transcription of illegible records is unsuccessful or the transcription of illegible records appears to misrepresent the services documented. The provider may, after one year from the date of service(s), microfilm or microfiche the records for the remaining five years, as long as the microfilm or microfiche is of a quality that assures that the records remain legible. Electronic records are acceptable as long as they have a secured signature. Provider (other than individual practitioner) agrees to disclose, upon request, information relating to ownership or control, business transactions and criminal offenses involving any program under Title V of the Child Health Act or Titles, XVIII, XIX, XX, or XXI of the Federal Social Security Act.
Okla. Admin. Code § 317:30-3-15