Okla. Admin. Code § 310:667-56-2
A general medical surgical hospital or critical access hospital that converts to an emergency hospital shall be considered an existing facility and shall comply with the construction standards and codes that existed at the time of their construction. If the emergency hospital renovates, all new work shall comply, insofar as practical, as specified at OAC 310:667-41.
Added at 20 Ok Reg 1664, eff 6-12-03
Amended at 36 Ok Reg 1730, eff 9-13-19