42 C.F.R. § 424.27 Requirements for comprehensive outpatient rehabilitation facility (CORF) services.
Title 42 - Public Health
Medicare Part B pays for CORF services only if a physician certifies, and the facility physician recertifies, the content specified in paragraphs (a) and (b)(2) of this section, as appropriate. (a) Certification: Content. (1) The services were required because the individual needed skilled rehabilitation services; (2) The services were furnished while the individual was under the care of a physician; and (3) A written plan of treatment has been established and is reviewed periodically by a physician. (b) Recertification—(1) Timing. Recertification is required at least every 60 days, based on review by a facility physician who, when appropriate, consults with the professional personnel who furnish the services. (2) Content. (i) The plan is being followed; (ii) The patient is making progress in attaining the rehabilitation goals; and, (iii) The treatment is not having any harmful effect on the patient.
Title 42: Public Health
PART 424—CONDITIONS FOR MEDICARE PAYMENT
Subpart B—Certification and Plan of Treatment Requirements
§ 424.27 Requirements for comprehensive outpatient rehabilitation facility (CORF) services.

